diff --git a/packages/core/src/types/event.types.ts b/packages/core/src/types/event.types.ts
index f0bbde16..48608e3b 100644
--- a/packages/core/src/types/event.types.ts
+++ b/packages/core/src/types/event.types.ts
@@ -56,6 +56,7 @@ export interface Schema_Event {
   title?: string;
   updatedAt?: Date;
   user?: string;
+  optimistic?: boolean;
 }
 
 export interface Query_Event extends Query {
diff --git a/packages/web/src/common/utils/event.util.ts b/packages/web/src/common/utils/event.util.ts
index 60468858..d89c0aef 100644
--- a/packages/web/src/common/utils/event.util.ts
+++ b/packages/web/src/common/utils/event.util.ts
@@ -1,5 +1,6 @@
 import { schema } from "normalizr";
 import dayjs, { Dayjs } from "dayjs";
+import { v4 as uuidv4 } from "uuid";
 import isSameOrAfter from "dayjs/plugin/isSameOrAfter";
 import isSameOrBefore from "dayjs/plugin/isSameOrBefore";
 import isBetween from "dayjs/plugin/isBetween";
@@ -209,3 +210,13 @@ export const prepEvtBeforeSubmit = (draft: Schema_GridEvent) => {
 
 export const normalizedEventsSchema = () =>
   new schema.Entity("events", {}, { idAttribute: "_id" });
+
+export const createOptimisticEvent = (event: Schema_Event) => {
+  const _event = {
+    ...event,
+    _id: `optimistic-${uuidv4()}`,
+    optimistic: true,
+  } as Schema_Event;
+
+  return _event;
+};
diff --git a/packages/web/src/ducks/events/event.types.ts b/packages/web/src/ducks/events/event.types.ts
index 58f1a8b9..5d97a654 100644
--- a/packages/web/src/ducks/events/event.types.ts
+++ b/packages/web/src/ducks/events/event.types.ts
@@ -45,6 +45,10 @@ export interface Action_InsertEvents extends Action {
   payload: Entities_Event | undefined;
 }
 
+export interface Action_ReplaceEvent extends Action {
+  payload: Payload_ReplaceEvent;
+}
+
 export interface Action_TimezoneChange extends Action {
   payload: { timezone: string };
 }
@@ -80,6 +84,11 @@ export interface Payload_EditEvent {
   shouldRemove?: boolean;
 }
 
+export interface Payload_ReplaceEvent {
+  oldEventId: string;
+  newEvent: Schema_Event;
+}
+
 export interface Payload_GetPaginatedEvents extends Filters_Pagination {
   priorities: Priorities[];
 }
diff --git a/packages/web/src/ducks/events/sagas/event.sagas.ts b/packages/web/src/ducks/events/sagas/event.sagas.ts
index 4765559a..91aa7b84 100644
--- a/packages/web/src/ducks/events/sagas/event.sagas.ts
+++ b/packages/web/src/ducks/events/sagas/event.sagas.ts
@@ -10,6 +10,7 @@ import { EventApi } from "@web/ducks/events/event.api";
 import { selectEventById } from "@web/ducks/events/selectors/event.selectors";
 import { selectPaginatedEventsBySectionType } from "@web/ducks/events/selectors/util.selectors";
 import {
+  createOptimisticEvent,
   handleError,
   normalizedEventsSchema,
 } from "@web/common/utils/event.util";
@@ -112,38 +113,74 @@ function* convertTimedEvent({ payload }: Action_ConvertTimedEvent) {
 }
 
 function* createEvent({ payload }: Action_CreateEvent) {
+  const event = createOptimisticEvent(payload);
   try {
+    // Insert the optimistic event into the store to immediately display the event
+    if (payload.isSomeday) {
+      yield put(getSomedayEventsSlice.actions.insert(event._id));
+    } else {
+      yield put(getWeekEventsSlice.actions.insert(event._id));
+    }
+    yield put(
+      eventsEntitiesSlice.actions.insert(
+        normalize<Schema_Event>(event, normalizedEventsSchema()).entities.events
+      )
+    );
+
+    // Send a request to create the event
     const res = (yield call(
       EventApi.create,
       payload
     )) as Response_CreateEventSaga;
 
-    const normalizedEvent = normalize<Schema_Event>(
-      res.data,
-      normalizedEventsSchema()
-    );
-
+    // Replace the optimistic event with the actual event
     if (payload.isSomeday) {
-      yield put(getSomedayEventsSlice.actions.insert(res.data._id));
+      yield put(
+        getSomedayEventsSlice.actions.replace({
+          oldSomedayId: event._id,
+          newSomedayId: res.data._id,
+        })
+      );
     } else {
-      yield put(getWeekEventsSlice.actions.insert(res.data._id));
+      yield put(
+        getWeekEventsSlice.actions.replace({
+          oldWeekId: event._id,
+          newWeekId: res.data._id,
+        })
+      );
     }
 
     yield put(
-      eventsEntitiesSlice.actions.insert(normalizedEvent.entities.events)
+      eventsEntitiesSlice.actions.replace({
+        oldEventId: event._id,
+        newEvent: res.data,
+      })
     );
+
     yield put(createEventSlice.actions.success());
   } catch (error) {
     yield put(createEventSlice.actions.error());
+    yield call(deleteEvent, {
+      payload: { _id: event._id },
+    } as Action_DeleteEvent);
     handleError(error as Error);
   }
 }
 
 export function* deleteEvent({ payload }: Action_DeleteEvent) {
+  // TODO: Ideally we should pass the entire event object instead of just its id
+  // to the `deleteEvent` payload. Gives us more context to work with.
+  const event = (yield select((state: RootState) =>
+    selectEventById(state, payload._id)
+  )) as Schema_Event;
+
   try {
     yield put(getWeekEventsSlice.actions.delete(payload));
     yield put(eventsEntitiesSlice.actions.delete(payload));
-    yield call(EventApi.delete, payload._id);
+    if (!event.optimistic) {
+      yield call(EventApi.delete, payload._id);
+    }
+
     yield put(deleteEventSlice.actions.success());
   } catch (error) {
     yield put(deleteEventSlice.actions.error());
diff --git a/packages/web/src/ducks/events/slices/event.slice.ts b/packages/web/src/ducks/events/slices/event.slice.ts
index 03a59b92..0edbeb41 100644
--- a/packages/web/src/ducks/events/slices/event.slice.ts
+++ b/packages/web/src/ducks/events/slices/event.slice.ts
@@ -10,6 +10,7 @@ import {
   Action_DeleteEvent,
   Action_EditEvent,
   Action_InsertEvents,
+  Action_ReplaceEvent,
   Action_TimezoneChange,
   Entities_Event,
   Payload_EditEvent,
@@ -52,6 +53,10 @@ export const eventsEntitiesSlice = createSlice({
     insert: (state, action: Action_InsertEvents) => {
       state.value = { ...state.value, ...action.payload };
     },
+    replace: (state, action: Action_ReplaceEvent) => {
+      delete state.value[action.payload.oldEventId];
+      state.value[action.payload.newEvent._id] = action.payload.newEvent;
+    },
     updateAfterTzChange: (state, action: Action_TimezoneChange) => {
       const nextState = changeTimezones(state, action.payload.timezone);
       state.value = nextState.value;
diff --git a/packages/web/src/ducks/events/slices/someday.slice.ts b/packages/web/src/ducks/events/slices/someday.slice.ts
index 6558adff..d02cb1fe 100644
--- a/packages/web/src/ducks/events/slices/someday.slice.ts
+++ b/packages/web/src/ducks/events/slices/someday.slice.ts
@@ -29,6 +29,18 @@ export const getSomedayEventsSlice = createAsyncSlice<
       }
     },
 
+    replace: (
+      state,
+      action: { payload: { oldSomedayId: string; newSomedayId: string } }
+    ) => {
+      state.value.data = state.value.data.map((id: string) => {
+        if (id === action.payload.oldSomedayId) {
+          return action.payload.newSomedayId;
+        }
+        return id;
+      });
+    },
+
     reorder: (state, action) => {
       return;
     },
diff --git a/packages/web/src/ducks/events/slices/week.slice.ts b/packages/web/src/ducks/events/slices/week.slice.ts
index fea87112..09965487 100644
--- a/packages/web/src/ducks/events/slices/week.slice.ts
+++ b/packages/web/src/ducks/events/slices/week.slice.ts
@@ -25,5 +25,16 @@ export const getWeekEventsSlice = createAsyncSlice<
         state.value.data.push(action.payload);
       }
     },
+    replace: (
+      state,
+      action: { payload: { oldWeekId: string; newWeekId: string } }
+    ) => {
+      state.value.data = state.value.data.map((id: string) => {
+        if (id === action.payload.oldWeekId) {
+          return action.payload.newWeekId;
+        }
+        return id;
+      });
+    },
   },
 });