diff --git a/src/libs/Fullstory/index.ts b/src/libs/Fullstory/index.ts
index 28269674089f..ead801b1257d 100644
--- a/src/libs/Fullstory/index.ts
+++ b/src/libs/Fullstory/index.ts
@@ -143,6 +143,8 @@ const FS: Fullstory = {
                 properties: {
                     // eslint-disable-next-line @typescript-eslint/naming-convention -- FullStory schema uses external snake_case keys.
                     nps_response_date: 'date',
+                    // eslint-disable-next-line @typescript-eslint/naming-convention -- FullStory schema uses external snake_case keys.
+                    nudged_date: 'date',
                 },
             },
         });
diff --git a/src/libs/Fullstory/types.ts b/src/libs/Fullstory/types.ts
index 5443594eddb8..16783adbe8d8 100644
--- a/src/libs/Fullstory/types.ts
+++ b/src/libs/Fullstory/types.ts
@@ -29,6 +29,7 @@ type FullstoryUserVars = {
     paid_member?: boolean;
     nps_score?: number;
     nps_response_date?: Date;
+    nudged_date?: Date;
     auth_method?: 'email' | 'google' | 'apple';
     reg_method?: 'Google signup' | 'email/phone signup';
     login_status?: 'success' | 'failure';
diff --git a/src/libs/Fullstory/utils.ts b/src/libs/Fullstory/utils.ts
index 96e4be977d7d..a75a1393e178 100644
--- a/src/libs/Fullstory/utils.ts
+++ b/src/libs/Fullstory/utils.ts
@@ -204,6 +204,7 @@ function buildFullstoryUserVars({
             paid_member: userMetadata?.paidMember,
             nps_score: userMetadata?.npsScore,
             nps_response_date: getUTCDate(userMetadata?.npsResponseDate),
+            nudged_date: getUTCDate(userMetadata?.nudgedDate),
         } satisfies FullstoryUserVars,
         (_key, value) => value !== undefined,
     );
@@ -228,9 +229,10 @@ function buildPageViewedEvent(screenName: string, currentPath: string, entryPoin
 }
 
 /* eslint-disable @typescript-eslint/naming-convention -- The comparable snapshot preserves FullStory's external snake_case field names. */
-type ComparableFullstoryUserVars = Omit<FullstoryUserVars, 'free_trial_end_date' | 'nps_response_date'> & {
+type ComparableFullstoryUserVars = Omit<FullstoryUserVars, 'free_trial_end_date' | 'nps_response_date' | 'nudged_date'> & {
     free_trial_end_date?: string;
     nps_response_date?: string;
+    nudged_date?: string;
 };
 
 function getComparableFullstoryUserVars(userVars: FullstoryUserVars): ComparableFullstoryUserVars {
@@ -238,6 +240,7 @@ function getComparableFullstoryUserVars(userVars: FullstoryUserVars): Comparable
         ...userVars,
         free_trial_end_date: userVars.free_trial_end_date?.toISOString(),
         nps_response_date: userVars.nps_response_date?.toISOString(),
+        nudged_date: userVars.nudged_date?.toISOString(),
     };
 }
 /* eslint-enable @typescript-eslint/naming-convention */
diff --git a/src/types/onyx/UserMetadata.ts b/src/types/onyx/UserMetadata.ts
index f8ee216a6f6a..0acc50e39cbd 100644
--- a/src/types/onyx/UserMetadata.ts
+++ b/src/types/onyx/UserMetadata.ts
@@ -25,6 +25,9 @@ type UserMetadata = {
 
     /** When the user gave their most recent NPS score, in ISO 8601 */
     npsResponseDate?: string;
+
+    /** When the user was nudged to New Expensify, as a UTC `YYYY-MM-DD HH:MM:SS` timestamp. Only set for nudged users */
+    nudgedDate?: string;
 };
 
 export default UserMetadata;
diff --git a/tests/unit/FullstoryUtilsTest.ts b/tests/unit/FullstoryUtilsTest.ts
index 6c12fa5626ec..036029cf6012 100644
--- a/tests/unit/FullstoryUtilsTest.ts
+++ b/tests/unit/FullstoryUtilsTest.ts
@@ -42,6 +42,7 @@ describe('FullstoryUtils', () => {
                 paidMember: true,
                 npsScore: 9,
                 npsResponseDate: '2026-05-03 09:30:00',
+                nudgedDate: '2026-06-16 10:26:36',
             },
         });
 
@@ -64,6 +65,7 @@ describe('FullstoryUtils', () => {
         expect(userVars.days_till_trial_end).toBeGreaterThan(0);
         expect(userVars.free_trial_end_date?.toISOString()).toBe('2099-05-31T23:59:59.000Z');
         expect(userVars.nps_response_date?.toISOString()).toBe('2026-05-03T09:30:00.000Z');
+        expect(userVars.nudged_date?.toISOString()).toBe('2026-06-16T10:26:36.000Z');
     });
 
     it('builds page viewed event metadata', () => {