diff --git a/src/models/TagUser.ts b/src/models/TagUser.ts
index cd2ccb8d0c..fd7889ca35 100644
--- a/src/models/TagUser.ts
+++ b/src/models/TagUser.ts
@@ -30,6 +30,11 @@ const tagUserSchema = new Schema({
     ref: "OrganizationTagUser",
     required: true,
   },
+  organizationId: {
+    type: Schema.Types.ObjectId,
+    ref: "Organization",
+    required: true,
+  },
   tagColor: {
     type: String,
     required: false,
diff --git a/src/resolvers/Mutation/assignToUserTags.ts b/src/resolvers/Mutation/assignToUserTags.ts
index 0cc3e40783..0aa6ad0ce0 100644
--- a/src/resolvers/Mutation/assignToUserTags.ts
+++ b/src/resolvers/Mutation/assignToUserTags.ts
@@ -153,7 +153,13 @@ export const assignToUserTags: MutationResolvers["assignToUserTags"] = async (
     Array.from(allTagsToAssign).map((tagId) => ({
       updateOne: {
         filter: { userId, tagId: new Types.ObjectId(tagId) },
-        update: { $setOnInsert: { userId, tagId: new Types.ObjectId(tagId) } },
+        update: {
+          $setOnInsert: {
+            userId,
+            tagId: new Types.ObjectId(tagId),
+            organizationId: currentTag.organizationId,
+          },
+        },
         upsert: true,
         setDefaultsOnInsert: true,
       },
diff --git a/src/resolvers/Mutation/assignUserTag.ts b/src/resolvers/Mutation/assignUserTag.ts
index ee2186642d..d7f076ae8a 100644
--- a/src/resolvers/Mutation/assignUserTag.ts
+++ b/src/resolvers/Mutation/assignUserTag.ts
@@ -171,7 +171,13 @@ export const assignUserTag: MutationResolvers["assignUserTag"] = async (
   const tagUserDocs = allAncestorTags.map((tagId) => ({
     updateOne: {
       filter: { userId: assigneeId, tagId },
-      update: { $setOnInsert: { userId: assigneeId, tagId } },
+      update: {
+        $setOnInsert: {
+          userId: assigneeId,
+          tagId,
+          organizationId: tag.organizationId,
+        },
+      },
       upsert: true,
       setDefaultsOnInsert: true,
     },
diff --git a/src/resolvers/User/tagsAssignedWith.ts b/src/resolvers/User/tagsAssignedWith.ts
index c4e08ef8a0..303fb76a0f 100644
--- a/src/resolvers/User/tagsAssignedWith.ts
+++ b/src/resolvers/User/tagsAssignedWith.ts
@@ -76,6 +76,7 @@ export const tagsAssignedWith: UserResolvers["tagsAssignedWith"] = async (
     TagUser.find({
       ...filter,
       userId: parent._id,
+      organizationId: args.organizationId,
     })
       .sort(sort)
       .limit(parsedArgs.limit)
@@ -85,6 +86,7 @@ export const tagsAssignedWith: UserResolvers["tagsAssignedWith"] = async (
 
     TagUser.find({
       userId: parent._id,
+      organizationId: args.organizationId,
     })
       .countDocuments()
       .exec(),
diff --git a/tests/helpers/tags.ts b/tests/helpers/tags.ts
index ddbf70cc8a..06d3f49e57 100644
--- a/tests/helpers/tags.ts
+++ b/tests/helpers/tags.ts
@@ -79,6 +79,7 @@ export const createAndAssignUsersToTag = async (
     await TagUser.create({
       userId: user?._id,
       tagId: tag?._id,
+      organizationId: tag?.organizationId,
     });
     testUsers.push(user);
   }
@@ -93,6 +94,7 @@ export const createTagsAndAssignToUser = async (
   await TagUser.create({
     userId: testUser?._id,
     tagId: testTag?._id,
+    organizationId: testTag?.organizationId,
   });
 
   const tags: TestUserTagType[] = [testTag];
@@ -108,6 +110,7 @@ export const createTagsAndAssignToUser = async (
     await TagUser.create({
       tagId: newTag?._id,
       userId: testUser?._id,
+      organizationId: newTag.organizationId,
     });
   }
 
diff --git a/tests/resolvers/Mutation/assignToUserTags.spec.ts b/tests/resolvers/Mutation/assignToUserTags.spec.ts
index 9486c2db7e..4d9397d9fb 100644
--- a/tests/resolvers/Mutation/assignToUserTags.spec.ts
+++ b/tests/resolvers/Mutation/assignToUserTags.spec.ts
@@ -165,10 +165,12 @@ describe("resolvers -> Mutation -> assignToUserTags", () => {
       TagUser.create({
         userId: randomUser2?._id,
         tagId: testTag2?._id,
+        organizationId: testTag2?.organizationId,
       }),
       TagUser.create({
         userId: randomUser3?._id,
         tagId: testTag2?._id,
+        organizationId: testTag2?.organizationId,
       }),
     ]);
 
@@ -234,10 +236,12 @@ describe("resolvers -> Mutation -> assignToUserTags", () => {
       TagUser.create({
         userId: randomUser2?._id,
         tagId: newTestTag?._id,
+        organizationId: newTestTag?.organizationId,
       }),
       TagUser.create({
         userId: randomUser3?._id,
         tagId: newTestTag?._id,
+        organizationId: newTestTag?.organizationId,
       }),
     ]);
 
diff --git a/tests/resolvers/Mutation/removeFromUserTags.spec.ts b/tests/resolvers/Mutation/removeFromUserTags.spec.ts
index 9ac18b68db..76069c8c38 100644
--- a/tests/resolvers/Mutation/removeFromUserTags.spec.ts
+++ b/tests/resolvers/Mutation/removeFromUserTags.spec.ts
@@ -168,10 +168,12 @@ describe("resolvers -> Mutation -> removeFromUserTags", () => {
       TagUser.create({
         userId: randomUser2?._id,
         tagId: testTag2?._id,
+        organizationId: testTag2?.organizationId,
       }),
       TagUser.create({
         userId: randomUser3?._id,
         tagId: testTag2?._id,
+        organizationId: testTag2?.organizationId,
       }),
     ]);
 
@@ -276,10 +278,12 @@ describe("resolvers -> Mutation -> removeFromUserTags", () => {
       TagUser.create({
         userId: randomUser2?._id,
         tagId: newTestTag?._id,
+        organizationId: newTestTag?.organizationId,
       }),
       TagUser.create({
         userId: randomUser3?._id,
         tagId: newTestTag?._id,
+        organizationId: newTestTag?.organizationId,
       }),
     ]);
 
diff --git a/tests/resolvers/Mutation/removeUserTag.spec.ts b/tests/resolvers/Mutation/removeUserTag.spec.ts
index cb9f4e815d..7fd2375a9a 100644
--- a/tests/resolvers/Mutation/removeUserTag.spec.ts
+++ b/tests/resolvers/Mutation/removeUserTag.spec.ts
@@ -49,14 +49,17 @@ beforeAll(async () => {
     {
       userId: testUser?._id,
       tagId: rootTag?._id,
+      organizationId: rootTag?.organizationId,
     },
     {
       userId: testUser?._id,
       tagId: childTag1?._id,
+      organizationId: childTag1?.organizationId,
     },
     {
       userId: testUser?._id,
       tagId: childTag2?._id,
+      organizationId: childTag2?.organizationId,
     },
   ]);
 });
diff --git a/tests/resolvers/UserTag/usersAssignedTo.spec.ts b/tests/resolvers/UserTag/usersAssignedTo.spec.ts
index 19db25982b..0333954353 100644
--- a/tests/resolvers/UserTag/usersAssignedTo.spec.ts
+++ b/tests/resolvers/UserTag/usersAssignedTo.spec.ts
@@ -45,6 +45,7 @@ beforeAll(async () => {
   await TagUser.create({
     tagId: testTag?._id,
     userId: randomUser?._id,
+    organizationId: testTag?.organizationId,
   });
 });
 
@@ -80,11 +81,13 @@ describe("usersAssignedTo resolver", () => {
     const tagUser1 = await TagUser.findOne({
       tagId: testTag?._id,
       userId: testUser?._id,
+      organizationId: testTag?.organizationId,
     });
 
     const tagUser2 = await TagUser.findOne({
       tagId: testTag?._id,
       userId: randomUser?._id,
+      organizationId: testTag?.organizationId,
     });
 
     const user1 = await User.findOne({