diff --git a/src/modules/minglaradmin/handlers/inviteTeammate.ts b/src/modules/minglaradmin/handlers/inviteTeammate.ts
index 8f1cee2..546ba79 100644
--- a/src/modules/minglaradmin/handlers/inviteTeammate.ts
+++ b/src/modules/minglaradmin/handlers/inviteTeammate.ts
@@ -78,29 +78,14 @@ export const handler = safeHandler(async (
     throw new ApiError(400, 'Per value must be greater than 0');
   }
 
-  // Run user creation, revenue and invite details inside a transaction
-  const createdUser = await prismaService.$transaction(async (tx) => {
-    // create a transaction-scoped MinglarService instance
-    const txMinglarService = new MinglarService(tx as unknown as PrismaService);
-
-    // Check if user already exists within transaction to avoid race
-    const existingUser = await txMinglarService.checkUserExists(emailAddress);
-    if (existingUser) {
-      throw new ApiError(400, 'User already exists.');
-    }
-
-    // Create new user
-    const user = await txMinglarService.createUserForInvite(emailAddress, roleXid);
-
-    // Create user revenue
-    await txMinglarService.createUserRevenue(user.id, isFixedSalary, perValue || 0);
-
-    // Create invite details
-    await txMinglarService.createInviteDetails(user.id, userInfo.id, MINGLAR_INVITATION_STATUS.INVITED);
-
-    // return created user from transaction
-    return user;
-  });
+    // Use single service method that encapsulates the transaction
+    const createdUser = await minglarService.inviteTeammate(
+      emailAddress,
+      roleXid,
+      isFixedSalary,
+      perValue || 0,
+      userInfo.id
+    );
 
   // send email after transaction commits
   await sendInvitationEmailForMinglarAdmin(emailAddress);
diff --git a/src/modules/minglaradmin/services/minglar.service.ts b/src/modules/minglaradmin/services/minglar.service.ts
index a1e215b..99c8655 100644
--- a/src/modules/minglaradmin/services/minglar.service.ts
+++ b/src/modules/minglaradmin/services/minglar.service.ts
@@ -192,6 +192,64 @@ export class MinglarService {
     });
   }
 
+  /**
+   * Invite teammate flow: checks existing user, creates user, revenue and invite details
+   * All operations are performed inside a single DB transaction to avoid races.
+   */
+  async inviteTeammate(
+    emailAddress: string,
+    roleXid: number,
+    isFixedSalary: boolean,
+    perValue: number,
+    invitedBy: number
+  ) {
+    return await this.prisma.$transaction(async (tx) => {
+      // Check existing user
+      const existingUser = await tx.user.findFirst({
+        where: { emailAddress: emailAddress, isActive: true },
+      });
+
+      if (existingUser) {
+        throw new ApiError(400, 'User already exists.');
+      }
+
+      // Create user with INVITED status
+      const user = await tx.user.create({
+        data: {
+          emailAddress: emailAddress,
+          roleXid: roleXid,
+          userStatus: USER_STATUS.INVITED,
+        },
+      });
+
+      // Create revenue record
+      await tx.userRevenue.create({
+        data: {
+          userXid: user.id,
+          is_fixed_salary: isFixedSalary,
+          per_value: perValue || 0,
+          isActive: true,
+        },
+      });
+
+      // Create invite details
+      await tx.inviteDetails.create({
+        data: {
+          userXid: user.id,
+          is_invited: true,
+          invited_by: invitedBy,
+          invited_on: new Date(),
+          is_accepted: false,
+          invitation_status: MINGLAR_INVITATION_STATUS.INVITED,
+          isActive: true,
+          isMinglarInvitation: true,
+        },
+      });
+
+      return user;
+    });
+  }
+
   async updateProfile(
     userId: number,
     userData: {