Indonesia Tax Identification Number: the 16-Digit NPWP
Your 16-digit NPWP is Indonesia's tax identification number (TIN): the format, why the 15-digit one is now rejected, and what to check.
- PMK 136/2023 — 16-digit NPWP and NITKU
- PER-7/PJ/2025 — technical guidance on registration, including PKP registration, in Coretax (revoked PER-04/PJ/2020 from 21 May 2025, Art 94)
The 16-digit NPWP is no longer something to prepare for. The transition is finished, the old 15-digit format is rejected rather than tolerated, and Coretax will not accept an invoice carrying it.
If your systems still hold 15-digit numbers — your own, or a supplier’s — this is what to change and why it matters now rather than at the next filing.
What your 16-digit NPWP actually is
For a company, it is your existing 15-digit number with a single
0 placed in front of it. Nothing else changes. A company whose NPWP was
01.234.567.8-901.000 is now 0012345678901000 — the same digits, one leading zero, and
the dots and dashes dropped.
For an individual resident taxpayer, the NPWP is the 16-digit NIK already printed on the KTP. There is no separate number to look up.
Branches are the one case with something genuinely new: a branch is identified by a NITKU, a 22-digit number made up of the head office NPWP followed by a six-digit branch sequence. It is issued automatically.
Key point
Nobody has to apply for the new number. Existing taxpayers were transitioned automatically. What has to happen is the update of every system that stores the old number — your accounting ledger, your invoicing, and your supplier and customer master data.
The dates, and why they are behind us
The 16-digit format was set out in PMK 136/2023, which brought it in from 1 July 2024, with the 15-digit number usable until 30 June 2024. That deadline was then extended, and the two formats ran alongside each other through the transition.
That period is over. Since 1 January 2025 Indonesian tax administration has run on Coretax (PMK 81/2024), and tax invoices are issued through its e-Faktur module or an appointed third-party application (PER-11/PJ/2025, Articles 40–41). In 2026 the 16-digit format is the only one that works.
What breaks if you use the old number
Coretax rejects an invoice carrying a 15-digit NPWP. This is the substantive change, and it catches people out: data quality that e-Faktur tolerated is now a hard rejection. A rejected invoice is not a warning — it is an invoice you cannot issue, to a customer who is waiting for it, and it has to be corrected before anything moves.
What to check
Three places the old number is still hiding
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Your own NPWP is right in Coretax but wrong somewhere in your accounting or invoicing system, so invoices go out on the old format.
What to checkConfirm the 16-digit number in your ledger, your invoicing template and any e-Faktur integration, and check it against your NIB and corporate records.
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Supplier and customer master data still holds 15-digit numbers, so a rejection arrives on somebody else's invoice rather than your own.
What to checkRe-confirm the NPWP you hold for every counterparty you regularly pay or invoice. The counterparty number also determines the withholding rate you apply.
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A branch is filed under the head office number because nobody knew a NITKU existed.
What to checkConfirm the 22-digit NITKU of each branch, and use it where branch-level identification is required.
The counterparty check matters twice over: the NPWP you hold for a supplier determines which withholding rate applies to what you pay them, so a stale number is both an invoicing problem and a withholding problem.
If you would like this reviewed rather than done in-house, our corporate tax team can confirm your registration and the systems that reference it. Individual taxpayers, including expatriate directors filing their own returns, should read our note on personal tax in Indonesia — the same identity number now applies there too.
Frequently asked questions
What is my 16-digit NPWP if I am a company?
Is the 16-digit NPWP the same as my NIK?
What happens if I file or invoice using the old 15-digit number?
Do I need a NITKU?
The current position is published by the Directorate General of Taxes.
Note
This article is general guidance and is not a substitute for advice on your own situation. Confirm the current requirements before acting.