diff --git a/src/libs/API/parameters/DetachReceiptParams.ts b/src/libs/API/parameters/DetachReceiptParams.ts
index a19b525a0ef0..b0aeed075d51 100644
--- a/src/libs/API/parameters/DetachReceiptParams.ts
+++ b/src/libs/API/parameters/DetachReceiptParams.ts
@@ -1,5 +1,6 @@
 type DetachReceiptParams = {
     transactionID: string;
+    reportActionID: string;
 };
 
 export default DetachReceiptParams;
diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index 5e50f69e28fa..2502cfd64608 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -5595,6 +5595,43 @@ function buildOptimisticModifiedExpenseReportAction(
     };
 }
 
+/**
+ * Builds an optimistic DETACH_RECEIPT report action with a randomly generated reportActionID.
+ */
+function buildOptimisticDetachReceipt(reportID: string | undefined, transactionID: string, merchant: string = CONST.TRANSACTION.PARTIAL_TRANSACTION_MERCHANT) {
+    return {
+        actionName: CONST.REPORT.ACTIONS.TYPE.MANAGER_DETACH_RECEIPT,
+        actorAccountID: currentUserAccountID,
+        automatic: false,
+        avatar: getCurrentUserAvatar(),
+        created: DateUtils.getDBTime(),
+        isAttachmentOnly: false,
+        originalMessage: {
+            transactionID,
+            merchant: `${merchant}`,
+        },
+        message: [
+            {
+                type: 'COMMENT',
+                html: `detached a receipt from expense '${merchant}'`,
+                text: `detached a receipt from expense '${merchant}'`,
+                whisperedTo: [],
+            },
+        ],
+        person: [
+            {
+                style: 'strong',
+                text: currentUserPersonalDetails?.displayName ?? String(currentUserAccountID),
+                type: 'TEXT',
+            },
+        ],
+        pendingAction: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+        reportActionID: rand64(),
+        reportID,
+        shouldShow: true,
+    };
+}
+
 /**
  * Builds an optimistic modified expense action for a tracked expense move with a randomly generated reportActionID.
  * @param transactionThreadID - The reportID of the transaction thread
@@ -8915,6 +8952,7 @@ export {
     buildOptimisticAnnounceChat,
     buildOptimisticWorkspaceChats,
     buildOptimisticCardAssignedReportAction,
+    buildOptimisticDetachReceipt,
     buildParticipantsFromAccountIDs,
     buildReportNameFromParticipantNames,
     buildTransactionThread,
diff --git a/src/libs/actions/IOU.ts b/src/libs/actions/IOU.ts
index 3c86ce947742..ef698e19272c 100644
--- a/src/libs/actions/IOU.ts
+++ b/src/libs/actions/IOU.ts
@@ -81,6 +81,7 @@ import {
     buildOptimisticCancelPaymentReportAction,
     buildOptimisticChatReport,
     buildOptimisticCreatedReportAction,
+    buildOptimisticDetachReceipt,
     buildOptimisticDismissedViolationReportAction,
     buildOptimisticExpenseReport,
     buildOptimisticHoldReportAction,
@@ -8706,8 +8707,51 @@ function detachReceipt(transactionID: string | undefined) {
             },
         },
     ];
+    const expenseReport = allReports?.[`${ONYXKEYS.COLLECTION.REPORT}${transaction?.reportID}`] ?? null;
+    const updatedReportAction = buildOptimisticDetachReceipt(expenseReport?.reportID, transactionID, transaction?.merchant);
 
-    const parameters: DetachReceiptParams = {transactionID};
+    optimisticData.push({
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${updatedReportAction?.reportID}`,
+        value: {
+            [updatedReportAction.reportActionID]: updatedReportAction as OnyxTypes.ReportAction,
+        },
+    });
+    optimisticData.push({
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.REPORT}${updatedReportAction?.reportID}`,
+        value: {
+            lastVisibleActionCreated: updatedReportAction.created,
+            lastReadTime: updatedReportAction.created,
+        },
+    });
+    failureData.push({
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.REPORT}${updatedReportAction?.reportID}`,
+        value: {
+            lastVisibleActionCreated: expenseReport?.lastVisibleActionCreated,
+            lastReadTime: expenseReport?.lastReadTime,
+        },
+    });
+    successData.push({
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${expenseReport?.reportID}`,
+        value: {
+            [updatedReportAction.reportActionID]: {pendingAction: null},
+        },
+    });
+    failureData.push({
+        onyxMethod: Onyx.METHOD.MERGE,
+        key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${expenseReport?.reportID}`,
+        value: {
+            [updatedReportAction.reportActionID]: {
+                ...(updatedReportAction as OnyxTypes.ReportAction),
+                errors: getMicroSecondOnyxErrorWithTranslationKey('iou.error.genericEditFailureMessage'),
+            },
+        },
+    });
+
+    const parameters: DetachReceiptParams = {transactionID, reportActionID: updatedReportAction.reportActionID};
 
     API.write(WRITE_COMMANDS.DETACH_RECEIPT, parameters, {optimisticData, successData, failureData});
 }