How to Merge Husband and Wife NPWPs via Coretax DJP

The Directorate General of Taxes (DJP) has launched an online service to merge husband‑and‑wife NPWPs (Tax Identification Numbers) via the Coretax portal. The service became available on 3 December 2025 on the DJP website. Married taxpayers can start the procedure immediately.

Merging NPWPs allows spouses to file taxes jointly, eliminating duplicate records and simplifying administration. The steps are: log in to Coretax, select “Merge NPWP”, upload the marriage certificate, verify the information, and submit the request. All documents are processed electronically.

After submission, DJP issues a combined NPWP within the standard processing time, enabling the couple to use a single number for future filings. Employers can update employee records more easily. The measure contributes to greater efficiency in the national tax system.