SP2DK in English: What It Means and How to Reply in 14 Days

An SP2DK — Surat Permintaan Penjelasan atas Data dan/atau Keterangan, a request for an explanation of data or information — is a letter from Indonesia’s Directorate General of Taxes asking you to account for something in your own tax reporting. It is the letter most Indonesian businesses meet before they ever meet an auditor.

It is not an audit, and treating it as one is the first mistake. It is also not a penalty notice, a demand for payment, or an accusation. It is a question with a deadline attached, and the deadline is the part that matters.

What changed on 1 January 2026

If you have read about this letter before, some of what you read is now out of date, including the version of this article we published in 2025.

Until the end of 2025 the process ran on a Directorate General circular, SE-05/PJ/2022. Since 1 January 2026 it has been governed by PMK 111/2025, a Minister of Finance regulation set on 30 December 2025 — a ministerial regulation, where the instrument before it was a circular issued inside the tax authority.

Everything below is what that regulation sets out in terms: the events that start your clock (Article 6(2)), the extension and how to claim it (Article 6(5) and 6(6)), what the tax office does with your answer (Article 6(9) to 6(11)), and the outcomes the process can be proposed for (Article 8(1)).

One wording note, because it decides how you count. The regulation says 14 hari — 14 days — and does not qualify them as calendar days. We have not seen the counting convention settled, so we work to the shorter reading and answer well inside it.

How long you have to answer an SP2DK

Fourteen days, and the clock does not start when the letter reaches you. Under Article 6(2) it runs from whichever of these happens first:

• The date the letter is issued, where it is delivered through your Taxpayer Account in CoreTax, the tax office’s online system.
• The date it is sent to the email address registered in the tax office’s own system.
• The date of proof of sending, where it goes by fax.
• The date of proof of sending, where it goes by post, expedition or courier.
• The date it is handed over in person, whether to you, your representative, your proxy, an employee, or an adult member of your family.

Asking for more time

Why the tax office issues one

These letters are not sent at random. Each follows a specific discrepancy, and since CoreTax came in, the comparisons that surface those discrepancies are made automatically and continuously. Five patterns account for most of what we see.

Income that does not match what third parties reported

Banks report interest and balances. Your customers report the tax they withheld from paying you. Your suppliers’ e-Faktur invoices — Indonesia’s e-invoicing system — show what you bought. When the income on your annual return sits below what those sources describe, the gap is visible without anyone going looking for it.

Assets that do not appear in the return

Property purchases, capital injections, and holdings in shares, funds or crypto assets are all recorded somewhere the tax office can reach. An acquisition that never appears in a return is a straightforward question waiting to be asked.

This is also the pattern that most often brings one of these letters to an individual rather than a company. A director whose spending or asset purchases sit awkwardly beside the income on their own return can be asked to explain the difference, and the answer belongs in their personal tax position rather than the company’s.

Documentation that does not support the figures

VAT invoiced against VAT reported, expenses claimed against receipts held, deductions taken against the evidence for them. Indonesia runs a self-assessment system, which means the burden of showing your working sits with you.

A compliance history that invites a closer look

Late annual returns, underpaid tax and repeated corrections to filed returns all raise the odds of scrutiny in later years, even where those later years are clean.

Automated cross-checking under CoreTax

A corporate return showing a loss, set against withholding tax that customers reported on substantial payments to you, is the kind of contradiction a system finds on its own. Getting the bookkeeping right through the year is what stops most of these arising: a return that reconciles to your own ledgers before it is filed rarely produces a letter at all.

From letter to outcome

1. 1
   Day 1

   Read what is actually being asked

   The letter names the data it is querying and the periods it covers. The scope is narrower than it looks, and answering a wider question than the one asked invites the next one.

2. 2
   Within 14 days

   Answer, with the documents attached

   Where you disagree with the data in the letter, Article 6(4) requires your explanation to come with supporting evidence. You may answer more than once inside the window.

3. 3

   The tax office examines the response

   Article 6(9). The examination weighs what you have said against the data that prompted the letter, and against anything else that has since arrived.

4. 4

   It fits, and a record is drawn up

   Article 6(10). Where the response matches what was asked, a berita acara — an official record of the outcome — shows the request was carried out. This is the ordinary ending, in the cases we see.

5. 5

   Or it does not, and you are invited in

   Article 6(11) and Article 7. Where the answer does not fit, where new data has appeared, or where nothing was sent in time, the tax office may call you to a discussion, in person or by video, and may also visit.

How to answer well

Tie every document to the transaction it explains, in the order the letter raises them. A bundle of statements with a covering note asks the examiner to do the reconciliation themselves, and an examiner doing your reconciliation is an examiner forming their own view of it.

Answer only what was asked. Keep the explanation factual, name the regulation where one supports your position, and where the discrepancy came from a genuine error, correct the return rather than arguing the point. If the underlying question is about how your corporate tax position was arrived at, the answer is usually in your own records rather than in an argument about the law.

Where an SP2DK can end up

Article 8(1) lists seventeen things the process can be proposed for. In our experience most letters end at the first: the request is closed, and that is the end of it. The rest of the list is why the deadline deserves respect. It includes correcting your registered data without your involvement, deregistering your tax number, revoking VAT-collector status, restricting or blocking certain public services, a valuation of your assets for tax purposes, surveillance and intelligence activity, a formal audit, and a preliminary criminal investigation.

Those last two are what people have in mind when they worry about one of these letters. It is worth being precise about them: an audit is one possible outcome of this process, not the process itself. Answering properly, inside the window, is what keeps the matter at the first item on that list.

You can read PMK 111/2025 in full on the Ministry of Finance’s legal documentation portal, JDIH Kemenkeu.