diff --git a/backend/src/main/java/de/fete/adapter/in/web/EventController.java b/backend/src/main/java/de/fete/adapter/in/web/EventController.java
index bd8b407..25a0d20 100644
--- a/backend/src/main/java/de/fete/adapter/in/web/EventController.java
+++ b/backend/src/main/java/de/fete/adapter/in/web/EventController.java
@@ -20,9 +20,7 @@ import de.fete.domain.port.in.CreateEventUseCase;
 import de.fete.domain.port.in.CreateRsvpUseCase;
 import de.fete.domain.port.in.GetAttendeesUseCase;
 import de.fete.domain.port.in.GetEventUseCase;
-import java.time.Clock;
 import java.time.DateTimeException;
-import java.time.LocalDate;
 import java.time.ZoneId;
 import java.util.List;
 import java.util.UUID;
@@ -39,22 +37,19 @@ public class EventController implements EventsApi {
   private final CreateRsvpUseCase createRsvpUseCase;
   private final CountAttendeesByEventUseCase countAttendeesByEventUseCase;
   private final GetAttendeesUseCase getAttendeesUseCase;
-  private final Clock clock;
 
-  /** Creates a new controller with the given use cases and clock. */
+  /** Creates a new controller with the given use cases. */
   public EventController(
       CreateEventUseCase createEventUseCase,
       GetEventUseCase getEventUseCase,
       CreateRsvpUseCase createRsvpUseCase,
       CountAttendeesByEventUseCase countAttendeesByEventUseCase,
-      GetAttendeesUseCase getAttendeesUseCase,
-      Clock clock) {
+      GetAttendeesUseCase getAttendeesUseCase) {
     this.createEventUseCase = createEventUseCase;
     this.getEventUseCase = getEventUseCase;
     this.createRsvpUseCase = createRsvpUseCase;
     this.countAttendeesByEventUseCase = countAttendeesByEventUseCase;
     this.getAttendeesUseCase = getAttendeesUseCase;
-    this.clock = clock;
   }
 
   @Override
@@ -67,8 +62,7 @@ public class EventController implements EventsApi {
         request.getDescription(),
         request.getDateTime(),
         zoneId,
-        request.getLocation(),
-        request.getExpiryDate()
+        request.getLocation()
     );
 
     Event event = createEventUseCase.createEvent(command);
@@ -79,7 +73,6 @@ public class EventController implements EventsApi {
     response.setTitle(event.getTitle());
     response.setDateTime(event.getDateTime());
     response.setTimezone(event.getTimezone().getId());
-    response.setExpiryDate(event.getExpiryDate());
 
     return ResponseEntity.status(HttpStatus.CREATED).body(response);
   }
@@ -99,8 +92,6 @@ public class EventController implements EventsApi {
     response.setLocation(event.getLocation());
     response.setAttendeeCount(
         (int) countAttendeesByEventUseCase.countByEvent(eventToken));
-    response.setExpired(
-        event.getExpiryDate().isBefore(LocalDate.now(clock)));
 
     return ResponseEntity.ok(response);
   }
diff --git a/backend/src/main/java/de/fete/application/service/EventService.java b/backend/src/main/java/de/fete/application/service/EventService.java
index 1f03fa3..70d226d 100644
--- a/backend/src/main/java/de/fete/application/service/EventService.java
+++ b/backend/src/main/java/de/fete/application/service/EventService.java
@@ -17,6 +17,8 @@ import org.springframework.stereotype.Service;
 @Service
 public class EventService implements CreateEventUseCase, GetEventUseCase {
 
+  private static final int EXPIRY_DAYS_AFTER_EVENT = 7;
+
   private final EventRepository eventRepository;
   private final Clock clock;
 
@@ -28,13 +30,7 @@ public class EventService implements CreateEventUseCase, GetEventUseCase {
 
   @Override
   public Event createEvent(CreateEventCommand command) {
-    if (!command.expiryDate().isAfter(LocalDate.now(clock))) {
-      throw new ExpiryDateInPastException(command.expiryDate());
-    }
-
-    if (!command.expiryDate().isAfter(command.dateTime().toLocalDate())) {
-      throw new ExpiryDateBeforeEventException(command.expiryDate(), command.dateTime());
-    }
+    LocalDate expiryDate = command.dateTime().toLocalDate().plusDays(EXPIRY_DAYS_AFTER_EVENT);
 
     var event = new Event();
     event.setEventToken(EventToken.generate());
@@ -44,7 +40,7 @@ public class EventService implements CreateEventUseCase, GetEventUseCase {
     event.setDateTime(command.dateTime());
     event.setTimezone(command.timezone());
     event.setLocation(command.location());
-    event.setExpiryDate(command.expiryDate());
+    event.setExpiryDate(expiryDate);
     event.setCreatedAt(OffsetDateTime.now(clock));
 
     return eventRepository.save(event);
diff --git a/backend/src/main/java/de/fete/domain/model/CreateEventCommand.java b/backend/src/main/java/de/fete/domain/model/CreateEventCommand.java
index 331df0c..08351fd 100644
--- a/backend/src/main/java/de/fete/domain/model/CreateEventCommand.java
+++ b/backend/src/main/java/de/fete/domain/model/CreateEventCommand.java
@@ -10,6 +10,5 @@ public record CreateEventCommand(
     String description,
     OffsetDateTime dateTime,
     ZoneId timezone,
-    String location,
-    LocalDate expiryDate
+    String location
 ) {}
diff --git a/backend/src/main/resources/openapi/api.yaml b/backend/src/main/resources/openapi/api.yaml
index 5435fff..9fb1a01 100644
--- a/backend/src/main/resources/openapi/api.yaml
+++ b/backend/src/main/resources/openapi/api.yaml
@@ -160,7 +160,6 @@ components:
         - title
         - dateTime
         - timezone
-        - expiryDate
       properties:
         title:
           type: string
@@ -181,11 +180,6 @@ components:
         location:
           type: string
           maxLength: 500
-        expiryDate:
-          type: string
-          format: date
-          description: Date after which event data is deleted. Must be in the future.
-          example: "2026-06-15"
 
     CreateEventResponse:
       type: object
@@ -195,7 +189,6 @@ components:
         - title
         - dateTime
         - timezone
-        - expiryDate
       properties:
         eventToken:
           type: string
@@ -218,10 +211,6 @@ components:
           type: string
           description: IANA timezone of the organizer
           example: "Europe/Berlin"
-        expiryDate:
-          type: string
-          format: date
-          example: "2026-06-15"
 
     GetEventResponse:
       type: object
@@ -231,7 +220,6 @@ components:
         - dateTime
         - timezone
         - attendeeCount
-        - expired
       properties:
         eventToken:
           type: string
@@ -264,10 +252,6 @@ components:
           minimum: 0
           description: Number of confirmed attendees (attending=true)
           example: 12
-        expired:
-          type: boolean
-          description: Whether the event's expiry date has passed
-          example: false
 
     CreateRsvpRequest:
       type: object
diff --git a/backend/src/test/java/de/fete/adapter/in/web/EventControllerIntegrationTest.java b/backend/src/test/java/de/fete/adapter/in/web/EventControllerIntegrationTest.java
index 21d93ac..d05292b 100644
--- a/backend/src/test/java/de/fete/adapter/in/web/EventControllerIntegrationTest.java
+++ b/backend/src/test/java/de/fete/adapter/in/web/EventControllerIntegrationTest.java
@@ -55,8 +55,7 @@ class EventControllerIntegrationTest {
         .description("Come celebrate!")
         .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
         .timezone("Europe/Berlin")
-        .location("Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 16));
+        .location("Berlin");
 
     var result = mockMvc.perform(post("/api/events")
             .contentType(MediaType.APPLICATION_JSON)
@@ -67,7 +66,6 @@ class EventControllerIntegrationTest {
         .andExpect(jsonPath("$.title").value("Birthday Party"))
         .andExpect(jsonPath("$.timezone").value("Europe/Berlin"))
         .andExpect(jsonPath("$.dateTime").isNotEmpty())
-        .andExpect(jsonPath("$.expiryDate").isNotEmpty())
         .andReturn();
 
     var response = objectMapper.readValue(
@@ -79,7 +77,7 @@ class EventControllerIntegrationTest {
     assertThat(persisted.getDescription()).isEqualTo("Come celebrate!");
     assertThat(persisted.getTimezone()).isEqualTo("Europe/Berlin");
     assertThat(persisted.getLocation()).isEqualTo("Berlin");
-    assertThat(persisted.getExpiryDate()).isEqualTo(request.getExpiryDate());
+    assertThat(persisted.getExpiryDate()).isEqualTo(LocalDate.of(2026, 6, 22));
     assertThat(persisted.getDateTime().toInstant())
         .isEqualTo(request.getDateTime().toInstant());
     assertThat(persisted.getOrganizerToken()).isNotNull();
@@ -91,8 +89,7 @@ class EventControllerIntegrationTest {
     var request = new CreateEventRequest()
         .title("Minimal Event")
         .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("UTC")
-        .expiryDate(LocalDate.of(2026, 6, 16));
+        .timezone("UTC");
 
     var result = mockMvc.perform(post("/api/events")
             .contentType(MediaType.APPLICATION_JSON)
@@ -119,8 +116,7 @@ class EventControllerIntegrationTest {
 
     var request = new CreateEventRequest()
         .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 16));
+        .timezone("Europe/Berlin");
 
     mockMvc.perform(post("/api/events")
             .contentType(MediaType.APPLICATION_JSON)
@@ -139,26 +135,6 @@ class EventControllerIntegrationTest {
 
     var request = new CreateEventRequest()
         .title("No Date")
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 16));
-
-    mockMvc.perform(post("/api/events")
-            .contentType(MediaType.APPLICATION_JSON)
-            .content(objectMapper.writeValueAsString(request)))
-        .andExpect(status().isBadRequest())
-        .andExpect(content().contentTypeCompatibleWith("application/problem+json"))
-        .andExpect(jsonPath("$.fieldErrors").isArray());
-
-    assertThat(jpaRepository.count()).isEqualTo(countBefore);
-  }
-
-  @Test
-  void createEventMissingExpiryDateReturns400() throws Exception {
-    long countBefore = jpaRepository.count();
-
-    var request = new CreateEventRequest()
-        .title("No Expiry")
-        .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
         .timezone("Europe/Berlin");
 
     mockMvc.perform(post("/api/events")
@@ -171,93 +147,12 @@ class EventControllerIntegrationTest {
     assertThat(jpaRepository.count()).isEqualTo(countBefore);
   }
 
-  @Test
-  void createEventExpiryDateInPastReturns400() throws Exception {
-    long countBefore = jpaRepository.count();
-
-    var request = new CreateEventRequest()
-        .title("Past Expiry")
-        .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2025, 1, 1));
-
-    mockMvc.perform(post("/api/events")
-            .contentType(MediaType.APPLICATION_JSON)
-            .content(objectMapper.writeValueAsString(request)))
-        .andExpect(status().isBadRequest())
-        .andExpect(content().contentTypeCompatibleWith("application/problem+json"))
-        .andExpect(jsonPath("$.type").value("urn:problem-type:expiry-date-in-past"));
-
-    assertThat(jpaRepository.count()).isEqualTo(countBefore);
-  }
-
-  @Test
-  void createEventExpiryDateTodayReturns400() throws Exception {
-    long countBefore = jpaRepository.count();
-
-    var request = new CreateEventRequest()
-        .title("Today Expiry")
-        .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.now());
-
-    mockMvc.perform(post("/api/events")
-            .contentType(MediaType.APPLICATION_JSON)
-            .content(objectMapper.writeValueAsString(request)))
-        .andExpect(status().isBadRequest())
-        .andExpect(content().contentTypeCompatibleWith("application/problem+json"))
-        .andExpect(jsonPath("$.type").value("urn:problem-type:expiry-date-in-past"));
-
-    assertThat(jpaRepository.count()).isEqualTo(countBefore);
-  }
-
-  @Test
-  void createEventExpiryDateBeforeEventDateReturns400() throws Exception {
-    long countBefore = jpaRepository.count();
-
-    var request = new CreateEventRequest()
-        .title("Bad Expiry")
-        .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 10));
-
-    mockMvc.perform(post("/api/events")
-            .contentType(MediaType.APPLICATION_JSON)
-            .content(objectMapper.writeValueAsString(request)))
-        .andExpect(status().isBadRequest())
-        .andExpect(content().contentTypeCompatibleWith("application/problem+json"))
-        .andExpect(jsonPath("$.type").value("urn:problem-type:expiry-date-before-event"));
-
-    assertThat(jpaRepository.count()).isEqualTo(countBefore);
-  }
-
-  @Test
-  void createEventExpiryDateSameAsEventDateReturns400() throws Exception {
-    long countBefore = jpaRepository.count();
-
-    var request = new CreateEventRequest()
-        .title("Same Day Expiry")
-        .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 15));
-
-    mockMvc.perform(post("/api/events")
-            .contentType(MediaType.APPLICATION_JSON)
-            .content(objectMapper.writeValueAsString(request)))
-        .andExpect(status().isBadRequest())
-        .andExpect(content().contentTypeCompatibleWith("application/problem+json"))
-        .andExpect(jsonPath("$.type").value("urn:problem-type:expiry-date-before-event"));
-
-    assertThat(jpaRepository.count()).isEqualTo(countBefore);
-  }
-
   @Test
   void errorResponseContentTypeIsProblemJson() throws Exception {
     var request = new CreateEventRequest()
         .title("")
         .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Europe/Berlin")
-        .expiryDate(LocalDate.of(2026, 6, 16));
+        .timezone("Europe/Berlin");
 
     mockMvc.perform(post("/api/events")
             .contentType(MediaType.APPLICATION_JSON)
@@ -273,8 +168,7 @@ class EventControllerIntegrationTest {
     var request = new CreateEventRequest()
         .title("Bad TZ")
         .dateTime(OffsetDateTime.of(2026, 6, 15, 20, 0, 0, 0, ZoneOffset.ofHours(2)))
-        .timezone("Not/A/Zone")
-        .expiryDate(LocalDate.of(2026, 6, 16));
+        .timezone("Not/A/Zone");
 
     mockMvc.perform(post("/api/events")
             .contentType(MediaType.APPLICATION_JSON)
@@ -302,7 +196,6 @@ class EventControllerIntegrationTest {
         .andExpect(jsonPath("$.timezone").value("Europe/Berlin"))
         .andExpect(jsonPath("$.location").value("Central Park"))
         .andExpect(jsonPath("$.attendeeCount").value(0))
-        .andExpect(jsonPath("$.expired").value(false))
         .andExpect(jsonPath("$.dateTime").isNotEmpty());
   }
 
@@ -327,18 +220,6 @@ class EventControllerIntegrationTest {
         .andExpect(jsonPath("$.type").value("urn:problem-type:event-not-found"));
   }
 
-  @Test
-  void getExpiredEventReturnsExpiredTrue() throws Exception {
-    EventJpaEntity entity = seedEvent(
-        "Past Event", "It happened", "Europe/Berlin",
-        "Old Venue", LocalDate.now().minusDays(1));
-
-    mockMvc.perform(get("/api/events/" + entity.getEventToken()))
-        .andExpect(status().isOk())
-        .andExpect(jsonPath("$.title").value("Past Event"))
-        .andExpect(jsonPath("$.expired").value(true));
-  }
-
   // --- RSVP tests ---
 
   @Test
diff --git a/backend/src/test/java/de/fete/application/service/EventServiceTest.java b/backend/src/test/java/de/fete/application/service/EventServiceTest.java
index c3c3055..0225866 100644
--- a/backend/src/test/java/de/fete/application/service/EventServiceTest.java
+++ b/backend/src/test/java/de/fete/application/service/EventServiceTest.java
@@ -1,7 +1,6 @@
 package de.fete.application.service;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
@@ -53,8 +52,7 @@ class EventServiceTest {
         "Come celebrate!",
         TODAY.plusDays(90).atStartOfDay(ZONE).toOffsetDateTime(),
         ZONE,
-        "Berlin",
-        TODAY.plusDays(120)
+        "Berlin"
     );
 
     Event result = eventService.createEvent(command);
@@ -75,8 +73,7 @@ class EventServiceTest {
 
     var command = new CreateEventCommand(
         "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null,
-        TODAY.plusDays(11)
+        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null
     );
 
     eventService.createEvent(command);
@@ -87,86 +84,19 @@ class EventServiceTest {
   }
 
   @Test
-  void expiryDateTodayThrowsException() {
-    var command = new CreateEventCommand(
-        "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null,
-        TODAY
-    );
-
-    assertThatThrownBy(() -> eventService.createEvent(command))
-        .isInstanceOf(ExpiryDateInPastException.class);
-  }
-
-  @Test
-  void expiryDateInPastThrowsException() {
-    var command = new CreateEventCommand(
-        "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null,
-        TODAY.minusDays(5)
-    );
-
-    assertThatThrownBy(() -> eventService.createEvent(command))
-        .isInstanceOf(ExpiryDateInPastException.class);
-  }
-
-  @Test
-  void expiryDateTomorrowSucceeds() {
+  void expiryDateIsEventDatePlusSevenDays() {
     when(eventRepository.save(any(Event.class)))
         .thenAnswer(invocation -> invocation.getArgument(0));
 
+    var eventDate = TODAY.plusDays(10);
     var command = new CreateEventCommand(
         "Test", null,
-        TODAY.plusDays(1).atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null,
-        TODAY.plusDays(2)
+        eventDate.atStartOfDay(ZONE).toOffsetDateTime(), ZONE, null
     );
 
     Event result = eventService.createEvent(command);
 
-    assertThat(result.getExpiryDate()).isEqualTo(TODAY.plusDays(2));
-  }
-
-  @Test
-  void expiryDateSameAsEventDateThrowsException() {
-    var command = new CreateEventCommand(
-        "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(),
-        ZONE, null,
-        TODAY.plusDays(10)
-    );
-
-    assertThatThrownBy(() -> eventService.createEvent(command))
-        .isInstanceOf(ExpiryDateBeforeEventException.class);
-  }
-
-  @Test
-  void expiryDateBeforeEventDateThrowsException() {
-    var command = new CreateEventCommand(
-        "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(),
-        ZONE, null,
-        TODAY.plusDays(5)
-    );
-
-    assertThatThrownBy(() -> eventService.createEvent(command))
-        .isInstanceOf(ExpiryDateBeforeEventException.class);
-  }
-
-  @Test
-  void expiryDateDayAfterEventDateSucceeds() {
-    when(eventRepository.save(any(Event.class)))
-        .thenAnswer(invocation -> invocation.getArgument(0));
-
-    var command = new CreateEventCommand(
-        "Test", null,
-        TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(),
-        ZONE, null,
-        TODAY.plusDays(11)
-    );
-
-    Event result = eventService.createEvent(command);
-
-    assertThat(result.getExpiryDate()).isEqualTo(TODAY.plusDays(11));
+    assertThat(result.getExpiryDate()).isEqualTo(eventDate.plusDays(7));
   }
 
   // --- GetEventUseCase tests (T004) ---
@@ -207,8 +137,7 @@ class EventServiceTest {
     var command = new CreateEventCommand(
         "Test", null,
         TODAY.plusDays(10).atStartOfDay(ZONE).toOffsetDateTime(),
-        ZoneId.of("America/New_York"), null,
-        TODAY.plusDays(11)
+        ZoneId.of("America/New_York"), null
     );
 
     Event result = eventService.createEvent(command);
diff --git a/frontend/e2e/event-create.spec.ts b/frontend/e2e/event-create.spec.ts
index aac9ceb..3a073eb 100644
--- a/frontend/e2e/event-create.spec.ts
+++ b/frontend/e2e/event-create.spec.ts
@@ -9,7 +9,6 @@ test.describe('US-1: Create an event', () => {
 
     await expect(page.getByText('Title is required.')).toBeVisible()
     await expect(page.getByText('Date and time are required.')).toBeVisible()
-    await expect(page.getByText('Expiry date is required.')).toBeVisible()
   })
 
   test('creates an event and redirects to event detail page', async ({ page }) => {
@@ -19,7 +18,6 @@ test.describe('US-1: Create an event', () => {
     await page.getByLabel(/description/i).fill('Bring your own drinks')
     await page.getByLabel(/date/i).first().fill('2026-04-15T18:00')
     await page.getByLabel(/location/i).fill('Central Park')
-    await page.getByLabel(/expiry/i).fill('2026-06-15')
 
     await page.getByRole('button', { name: /create event/i }).click()
 
@@ -31,7 +29,6 @@ test.describe('US-1: Create an event', () => {
 
     await page.getByLabel(/title/i).fill('Summer BBQ')
     await page.getByLabel(/date/i).first().fill('2026-04-15T18:00')
-    await page.getByLabel(/expiry/i).fill('2026-06-15')
 
     await page.getByRole('button', { name: /create event/i }).click()
     await expect(page).toHaveURL(/\/events\/.+/)
@@ -59,7 +56,6 @@ test.describe('US-1: Create an event', () => {
     await page.goto('/create')
     await page.getByLabel(/title/i).fill('Test')
     await page.getByLabel(/date/i).first().fill('2026-04-15T18:00')
-    await page.getByLabel(/expiry/i).fill('2026-06-15')
 
     await page.getByRole('button', { name: /create event/i }).click()
 
diff --git a/frontend/e2e/event-rsvp.spec.ts b/frontend/e2e/event-rsvp.spec.ts
index c954e5b..7d903cd 100644
--- a/frontend/e2e/event-rsvp.spec.ts
+++ b/frontend/e2e/event-rsvp.spec.ts
@@ -9,7 +9,6 @@ const fullEvent = {
   timezone: 'Europe/Berlin',
   location: 'Central Park, NYC',
   attendeeCount: 12,
-  expired: false,
 }
 
 test.describe('US1: RSVP submission flow', () => {
@@ -170,16 +169,4 @@ test.describe('US1: RSVP submission flow', () => {
     await expect(page.getByText("You're attending!")).not.toBeVisible()
   })
 
-  test('does not show RSVP bar on expired event', async ({ page, network }) => {
-    network.use(
-      http.get('*/api/events/:token', () => {
-        return HttpResponse.json({ ...fullEvent, expired: true })
-      }),
-    )
-
-    await page.goto(`/events/${fullEvent.eventToken}`)
-
-    await expect(page.getByText('This event has ended.')).toBeVisible()
-    await expect(page.getByRole('button', { name: "I'm attending" })).not.toBeVisible()
-  })
 })
diff --git a/frontend/e2e/event-view.spec.ts b/frontend/e2e/event-view.spec.ts
index e25c054..77cead3 100644
--- a/frontend/e2e/event-view.spec.ts
+++ b/frontend/e2e/event-view.spec.ts
@@ -9,7 +9,6 @@ const fullEvent = {
   timezone: 'Europe/Berlin',
   location: 'Central Park, NYC',
   attendeeCount: 12,
-  expired: false,
 }
 
 test.describe('US-1: View event details', () => {
@@ -52,20 +51,6 @@ test.describe('US-1: View event details', () => {
   })
 })
 
-test.describe('US-2: View expired event', () => {
-  test('shows "event has ended" banner for expired event', async ({ page, network }) => {
-    network.use(
-      http.get('*/api/events/:token', () => {
-        return HttpResponse.json({ ...fullEvent, expired: true })
-      }),
-    )
-
-    await page.goto(`/events/${fullEvent.eventToken}`)
-
-    await expect(page.getByText('This event has ended.')).toBeVisible()
-  })
-})
-
 test.describe('US-4: Event not found', () => {
   test('shows "event not found" for unknown token', async ({ page, network }) => {
     network.use(
diff --git a/frontend/e2e/home-events.spec.ts b/frontend/e2e/home-events.spec.ts
index d8a4cfc..13bff36 100644
--- a/frontend/e2e/home-events.spec.ts
+++ b/frontend/e2e/home-events.spec.ts
@@ -7,7 +7,6 @@ const futureEvent1: StoredEvent = {
   eventToken: 'future-aaa',
   title: 'Summer BBQ',
   dateTime: '2027-06-15T18:00:00Z',
-  expiryDate: '2027-06-16T00:00:00Z',
   organizerToken: 'org-token-1',
 }
 
@@ -15,7 +14,6 @@ const futureEvent2: StoredEvent = {
   eventToken: 'future-bbb',
   title: 'Team Meeting',
   dateTime: '2027-01-10T09:00:00Z',
-  expiryDate: '2027-01-11T00:00:00Z',
   rsvpToken: 'rsvp-token-1',
   rsvpName: 'Alice',
 }
@@ -24,7 +22,6 @@ const pastEvent: StoredEvent = {
   eventToken: 'past-ccc',
   title: 'New Year Party',
   dateTime: '2025-01-01T00:00:00Z',
-  expiryDate: '2025-01-02T00:00:00Z',
 }
 
 function seedEvents(events: StoredEvent[]): string {
@@ -85,7 +82,6 @@ test.describe('US4: Past Events Appear Faded', () => {
           location: '',
           timezone: 'UTC',
           attendeeCount: 0,
-          expired: true,
         })
       }),
     )
@@ -199,13 +195,11 @@ test.describe('Temporal Grouping: Section Headers', () => {
       eventToken: 'today-1',
       title: 'Today Standup',
       dateTime: new Date(now.getFullYear(), now.getMonth(), now.getDate(), 18, 0, 0).toISOString(),
-      expiryDate: '',
     }
     const laterEvent: StoredEvent = {
       eventToken: 'later-1',
       title: 'Future Conference',
       dateTime: new Date(now.getFullYear() + 1, 0, 15, 10, 0, 0).toISOString(),
-      expiryDate: '',
     }
     await page.addInitScript(seedEvents([todayEvent, laterEvent, pastEvent]))
     await page.goto('/')
@@ -245,7 +239,6 @@ test.describe('Temporal Grouping: Section Headers', () => {
       eventToken: 'today-emph',
       title: 'Emphasis Test',
       dateTime: new Date(now.getFullYear(), now.getMonth(), now.getDate(), 20, 0, 0).toISOString(),
-      expiryDate: '',
     }
     await page.addInitScript(seedEvents([todayEvent]))
     await page.goto('/')
@@ -262,7 +255,6 @@ test.describe('Temporal Grouping: Date Subheaders', () => {
       eventToken: 'today-sub',
       title: 'No Subheader Test',
       dateTime: new Date(now.getFullYear(), now.getMonth(), now.getDate(), 19, 0, 0).toISOString(),
-      expiryDate: '',
     }
     await page.addInitScript(seedEvents([todayEvent]))
     await page.goto('/')
@@ -355,7 +347,6 @@ test.describe('US1: View My Events', () => {
           location: '',
           timezone: 'UTC',
           attendeeCount: 0,
-          expired: false,
         })
       }),
     )
diff --git a/frontend/src/components/__tests__/EventList.spec.ts b/frontend/src/components/__tests__/EventList.spec.ts
index 4fab9d9..2a2a865 100644
--- a/frontend/src/components/__tests__/EventList.spec.ts
+++ b/frontend/src/components/__tests__/EventList.spec.ts
@@ -15,11 +15,11 @@ const router = createRouter({
 const NOW = new Date(2026, 2, 11, 12, 0, 0)
 
 const mockEvents = [
-  { eventToken: 'past-1', title: 'Past Event', dateTime: '2026-03-01T10:00:00', expiryDate: '' },
-  { eventToken: 'later-1', title: 'Later Event', dateTime: '2027-06-15T10:00:00', expiryDate: '' },
-  { eventToken: 'today-1', title: 'Today Event', dateTime: '2026-03-11T18:00:00', expiryDate: '' },
-  { eventToken: 'week-1', title: 'This Week Event', dateTime: '2026-03-13T10:00:00', expiryDate: '' },
-  { eventToken: 'nextweek-1', title: 'Next Week Event', dateTime: '2026-03-16T10:00:00', expiryDate: '' },
+  { eventToken: 'past-1', title: 'Past Event', dateTime: '2026-03-01T10:00:00' },
+  { eventToken: 'later-1', title: 'Later Event', dateTime: '2027-06-15T10:00:00' },
+  { eventToken: 'today-1', title: 'Today Event', dateTime: '2026-03-11T18:00:00' },
+  { eventToken: 'week-1', title: 'This Week Event', dateTime: '2026-03-13T10:00:00' },
+  { eventToken: 'nextweek-1', title: 'Next Week Event', dateTime: '2026-03-16T10:00:00' },
 ]
 
 vi.mock('../../composables/useEventStorage', () => ({
diff --git a/frontend/src/components/__tests__/useEventGrouping.spec.ts b/frontend/src/components/__tests__/useEventGrouping.spec.ts
index 92a7750..ccbceba 100644
--- a/frontend/src/components/__tests__/useEventGrouping.spec.ts
+++ b/frontend/src/components/__tests__/useEventGrouping.spec.ts
@@ -6,7 +6,6 @@ function makeEvent(overrides: Partial<StoredEvent> & { dateTime: string }): Stor
   return {
     eventToken: `evt-${Math.random().toString(36).slice(2, 8)}`,
     title: 'Test Event',
-    expiryDate: '',
     ...overrides,
   }
 }
diff --git a/frontend/src/composables/__tests__/useEventStorage.spec.ts b/frontend/src/composables/__tests__/useEventStorage.spec.ts
index 0cf740c..0ee521a 100644
--- a/frontend/src/composables/__tests__/useEventStorage.spec.ts
+++ b/frontend/src/composables/__tests__/useEventStorage.spec.ts
@@ -43,7 +43,6 @@ describe('useEventStorage', () => {
       organizerToken: 'org-456',
       title: 'Birthday',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     const events = getStoredEvents()
@@ -61,7 +60,6 @@ describe('useEventStorage', () => {
       organizerToken: 'org-456',
       title: 'Test',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     expect(getOrganizerToken('abc-123')).toBe('org-456')
@@ -79,14 +77,12 @@ describe('useEventStorage', () => {
       eventToken: 'event-1',
       title: 'First',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     saveCreatedEvent({
       eventToken: 'event-2',
       title: 'Second',
       dateTime: '2026-07-15T20:00:00+02:00',
-      expiryDate: '2026-08-15',
     })
 
     const events = getStoredEvents()
@@ -102,14 +98,12 @@ describe('useEventStorage', () => {
       eventToken: 'abc-123',
       title: 'Old Title',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     saveCreatedEvent({
       eventToken: 'abc-123',
       title: 'New Title',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     const events = getStoredEvents()
@@ -124,7 +118,6 @@ describe('useEventStorage', () => {
       eventToken: 'abc-123',
       title: 'Birthday',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     saveRsvp('abc-123', 'rsvp-token-1', 'Max', 'Birthday', '2026-06-15T20:00:00+02:00')
@@ -154,7 +147,6 @@ describe('useEventStorage', () => {
       eventToken: 'abc-123',
       title: 'Test',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     expect(getRsvp('abc-123')).toBeUndefined()
@@ -172,14 +164,12 @@ describe('useEventStorage', () => {
       eventToken: 'event-1',
       title: 'First',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     saveCreatedEvent({
       eventToken: 'event-2',
       title: 'Second',
       dateTime: '2026-07-15T20:00:00+02:00',
-      expiryDate: '2026-08-15',
     })
 
     removeEvent('event-1')
@@ -196,7 +186,6 @@ describe('useEventStorage', () => {
       eventToken: 'event-1',
       title: 'First',
       dateTime: '2026-06-15T20:00:00+02:00',
-      expiryDate: '2026-07-15',
     })
 
     removeEvent('nonexistent')
@@ -220,8 +209,7 @@ describe('isValidStoredEvent', () => {
         eventToken: 'abc-123',
         title: 'Birthday',
         dateTime: '2026-06-15T20:00:00+02:00',
-        expiryDate: '2026-07-15',
-      }),
+        }),
     ).toBe(true)
   })
 
diff --git a/frontend/src/composables/useEventStorage.ts b/frontend/src/composables/useEventStorage.ts
index 99dfb9f..b790f73 100644
--- a/frontend/src/composables/useEventStorage.ts
+++ b/frontend/src/composables/useEventStorage.ts
@@ -3,7 +3,6 @@ export interface StoredEvent {
   organizerToken?: string
   title: string
   dateTime: string
-  expiryDate: string
   rsvpToken?: string
   rsvpName?: string
 }
@@ -66,7 +65,7 @@ export function useEventStorage() {
       existing.rsvpToken = rsvpToken
       existing.rsvpName = rsvpName
     } else {
-      events.push({ eventToken, title, dateTime, expiryDate: '', rsvpToken, rsvpName })
+      events.push({ eventToken, title, dateTime, rsvpToken, rsvpName })
     }
     writeEvents(events)
   }
diff --git a/frontend/src/views/EventCreateView.vue b/frontend/src/views/EventCreateView.vue
index 5d7363e..fcbf49a 100644
--- a/frontend/src/views/EventCreateView.vue
+++ b/frontend/src/views/EventCreateView.vue
@@ -65,21 +65,6 @@
         <span v-if="errors.location" id="location-error" class="field-error" role="alert">{{ errors.location }}</span>
       </div>
 
-      <div class="form-group">
-        <label for="expiryDate" class="form-label">Expiry Date *</label>
-        <input
-          id="expiryDate"
-          v-model="form.expiryDate"
-          type="date"
-          class="form-field glass"
-          required
-          :min="tomorrow"
-          :aria-invalid="!!errors.expiryDate"
-          :aria-describedby="errors.expiryDate ? 'expiryDate-error' : undefined"
-        />
-        <span v-if="errors.expiryDate" id="expiryDate-error" class="field-error" role="alert">{{ errors.expiryDate }}</span>
-      </div>
-
       <button type="submit" class="btn-primary glass" :disabled="submitting">
         {{ submitting ? 'Creating…' : 'Create Event' }}
       </button>
@@ -90,7 +75,7 @@
 </template>
 
 <script setup lang="ts">
-import { reactive, ref, computed, watch } from 'vue'
+import { reactive, ref, watch } from 'vue'
 import { RouterLink, useRouter } from 'vue-router'
 import { api } from '@/api/client'
 import { useEventStorage } from '@/composables/useEventStorage'
@@ -103,7 +88,6 @@ const form = reactive({
   description: '',
   dateTime: '',
   location: '',
-  expiryDate: '',
 })
 
 const errors = reactive({
@@ -111,31 +95,22 @@ const errors = reactive({
   description: '',
   dateTime: '',
   location: '',
-  expiryDate: '',
 })
 
 const submitting = ref(false)
 const serverError = ref('')
 
-const tomorrow = computed(() => {
-  const d = new Date()
-  d.setDate(d.getDate() + 1)
-  return d.toISOString().split('T')[0]
-})
-
 function clearErrors() {
   errors.title = ''
   errors.description = ''
   errors.dateTime = ''
   errors.location = ''
-  errors.expiryDate = ''
   serverError.value = ''
 }
 
 // Clear individual field errors when the user types
 watch(() => form.title, () => { errors.title = ''; serverError.value = '' })
 watch(() => form.dateTime, () => { errors.dateTime = ''; serverError.value = '' })
-watch(() => form.expiryDate, () => { errors.expiryDate = ''; serverError.value = '' })
 watch(() => form.description, () => { serverError.value = '' })
 watch(() => form.location, () => { serverError.value = '' })
 
@@ -153,14 +128,6 @@ function validate(): boolean {
     valid = false
   }
 
-  if (!form.expiryDate) {
-    errors.expiryDate = 'Expiry date is required.'
-    valid = false
-  } else if (form.expiryDate <= (new Date().toISOString().split('T')[0] ?? '')) {
-    errors.expiryDate = 'Expiry date must be in the future.'
-    valid = false
-  }
-
   return valid
 }
 
@@ -186,7 +153,6 @@ async function handleSubmit() {
         dateTime: dateTimeWithOffset,
         timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
         location: form.location.trim() || undefined,
-        expiryDate: form.expiryDate,
       },
     })
 
@@ -212,7 +178,6 @@ async function handleSubmit() {
         organizerToken: data.organizerToken,
         title: data.title,
         dateTime: data.dateTime,
-        expiryDate: data.expiryDate,
       })
 
       router.push({ name: 'event', params: { eventToken: data.eventToken } })
diff --git a/frontend/src/views/EventDetailView.vue b/frontend/src/views/EventDetailView.vue
index 840f667..f4a6d0e 100644
--- a/frontend/src/views/EventDetailView.vue
+++ b/frontend/src/views/EventDetailView.vue
@@ -25,10 +25,6 @@
 
       <!-- Loaded state -->
       <div v-else-if="state === 'loaded' && event" class="detail__content">
-        <div v-if="event.expired" class="detail__banner detail__banner--expired" role="status">
-          This event has ended.
-        </div>
-
         <h1 class="detail__title">{{ event.title }}</h1>
 
         <dl class="detail__meta">
@@ -74,9 +70,9 @@
       </div>
     </div>
 
-    <!-- RSVP bar (only for loaded, non-expired events) -->
+    <!-- RSVP bar -->
     <RsvpBar
-      v-if="state === 'loaded' && event && !event.expired && !isOrganizer"
+      v-if="state === 'loaded' && event && !isOrganizer"
       :has-rsvp="!!rsvpName"
       @open="sheetOpen = true"
     />
@@ -412,12 +408,6 @@ onMounted(fetchEvent)
   text-align: center;
 }
 
-.detail__banner--expired {
-  background: var(--color-glass);
-  color: var(--color-text-soft);
-  backdrop-filter: blur(4px);
-}
-
 /* Error / not-found message */
 .detail__message {
   font-size: 1.1rem;
diff --git a/frontend/src/views/__tests__/EventCreateView.spec.ts b/frontend/src/views/__tests__/EventCreateView.spec.ts
index ee08832..681e8a8 100644
--- a/frontend/src/views/__tests__/EventCreateView.spec.ts
+++ b/frontend/src/views/__tests__/EventCreateView.spec.ts
@@ -44,7 +44,6 @@ describe('EventCreateView', () => {
     expect(wrapper.find('#description').exists()).toBe(true)
     expect(wrapper.find('#dateTime').exists()).toBe(true)
     expect(wrapper.find('#location').exists()).toBe(true)
-    expect(wrapper.find('#expiryDate').exists()).toBe(true)
   })
 
   it('has required attribute on required fields', async () => {
@@ -58,7 +57,6 @@ describe('EventCreateView', () => {
 
     expect(wrapper.find('#title').attributes('required')).toBeDefined()
     expect(wrapper.find('#dateTime').attributes('required')).toBeDefined()
-    expect(wrapper.find('#expiryDate').attributes('required')).toBeDefined()
   })
 
   it('does not have required attribute on optional fields', async () => {
@@ -102,7 +100,6 @@ describe('EventCreateView', () => {
     // Fill required fields
     await wrapper.find('#title').setValue('My Event')
     await wrapper.find('#dateTime').setValue('2026-12-25T18:00')
-    await wrapper.find('#expiryDate').setValue('2026-12-24')
 
     await wrapper.find('form').trigger('submit')
     await flushPromises()
@@ -127,7 +124,7 @@ describe('EventCreateView', () => {
     await wrapper.find('form').trigger('submit')
 
     const errorsBefore = wrapper.findAll('[role="alert"]').map((el) => el.text()).filter((t) => t.length > 0)
-    expect(errorsBefore.length).toBeGreaterThanOrEqual(3)
+    expect(errorsBefore.length).toBeGreaterThanOrEqual(2)
 
     // Type into title field
     await wrapper.find('#title').setValue('My Event')
@@ -138,9 +135,6 @@ describe('EventCreateView', () => {
 
     const dateTimeError = wrapper.find('#dateTime').element.closest('.form-group')!.querySelector('[role="alert"]')!
     expect(dateTimeError.textContent).not.toBe('')
-
-    const expiryError = wrapper.find('#expiryDate').element.closest('.form-group')!.querySelector('[role="alert"]')!
-    expect(expiryError.textContent).not.toBe('')
   })
 
   it('shows validation errors when submitting empty form', async () => {
@@ -156,7 +150,7 @@ describe('EventCreateView', () => {
 
     const errorElements = wrapper.findAll('[role="alert"]')
     const errorTexts = errorElements.map((el) => el.text()).filter((t) => t.length > 0)
-    expect(errorTexts.length).toBeGreaterThanOrEqual(3)
+    expect(errorTexts.length).toBeGreaterThanOrEqual(2)
   })
 
   it('submits successfully, saves to storage, and navigates to event page', async () => {
@@ -179,7 +173,6 @@ describe('EventCreateView', () => {
         title: 'Birthday Party',
         dateTime: '2026-12-25T18:00:00+01:00',
         timezone: 'Europe/Berlin',
-        expiryDate: '2026-12-24',
       },
       error: undefined,
       response: new Response(),
@@ -198,7 +191,6 @@ describe('EventCreateView', () => {
     await wrapper.find('#description').setValue('Come celebrate!')
     await wrapper.find('#dateTime').setValue('2026-12-25T18:00')
     await wrapper.find('#location').setValue('Berlin')
-    await wrapper.find('#expiryDate').setValue('2026-12-24')
 
     await wrapper.find('form').trigger('submit')
     await flushPromises()
@@ -208,7 +200,6 @@ describe('EventCreateView', () => {
         title: 'Birthday Party',
         description: 'Come celebrate!',
         location: 'Berlin',
-        expiryDate: '2026-12-24',
       }),
     })
 
@@ -217,7 +208,6 @@ describe('EventCreateView', () => {
       organizerToken: 'org-456',
       title: 'Birthday Party',
       dateTime: '2026-12-25T18:00:00+01:00',
-      expiryDate: '2026-12-24',
     })
 
     expect(pushSpy).toHaveBeenCalledWith({
@@ -245,7 +235,6 @@ describe('EventCreateView', () => {
 
     await wrapper.find('#title').setValue('Duplicate Event')
     await wrapper.find('#dateTime').setValue('2026-12-25T18:00')
-    await wrapper.find('#expiryDate').setValue('2026-12-24')
 
     await wrapper.find('form').trigger('submit')
     await flushPromises()
@@ -256,6 +245,5 @@ describe('EventCreateView', () => {
 
     // Other field errors should not be present
     expect(wrapper.find('#dateTime-error').exists()).toBe(false)
-    expect(wrapper.find('#expiryDate-error').exists()).toBe(false)
   })
 })
diff --git a/frontend/src/views/__tests__/EventDetailView.spec.ts b/frontend/src/views/__tests__/EventDetailView.spec.ts
index 60989cc..9288cc2 100644
--- a/frontend/src/views/__tests__/EventDetailView.spec.ts
+++ b/frontend/src/views/__tests__/EventDetailView.spec.ts
@@ -54,7 +54,6 @@ const fullEvent = {
   timezone: 'Europe/Berlin',
   location: 'Central Park, NYC',
   attendeeCount: 12,
-  expired: false,
 }
 
 function mockLoadedEvent(eventOverrides = {}) {
@@ -124,29 +123,6 @@ describe('EventDetailView', () => {
     wrapper.unmount()
   })
 
-  // Expired state
-  it('renders "event has ended" banner when expired', async () => {
-    mockLoadedEvent({ expired: true })
-
-    const wrapper = await mountWithToken()
-    await flushPromises()
-
-    expect(wrapper.text()).toContain('This event has ended.')
-    expect(wrapper.find('.detail__banner--expired').exists()).toBe(true)
-    wrapper.unmount()
-  })
-
-  // No expired banner when not expired
-  it('does not render expired banner when event is active', async () => {
-    mockLoadedEvent()
-
-    const wrapper = await mountWithToken()
-    await flushPromises()
-
-    expect(wrapper.find('.detail__banner--expired').exists()).toBe(false)
-    wrapper.unmount()
-  })
-
   // Not found state
   it('renders "event not found" when API returns 404', async () => {
     vi.mocked(api.GET).mockResolvedValue({
@@ -229,17 +205,6 @@ describe('EventDetailView', () => {
     wrapper.unmount()
   })
 
-  it('does not show RSVP bar on expired event', async () => {
-    mockLoadedEvent({ expired: true })
-
-    const wrapper = await mountWithToken()
-    await flushPromises()
-
-    expect(wrapper.find('.rsvp-bar__cta').exists()).toBe(false)
-    expect(wrapper.find('.rsvp-bar').exists()).toBe(false)
-    wrapper.unmount()
-  })
-
   it('shows RSVP status bar when localStorage has RSVP', async () => {
     mockGetRsvp.mockReturnValue({ rsvpToken: 'rsvp-1', rsvpName: 'Max' })
     mockLoadedEvent()