The OECD's Global Minimum Tax Just Made Indonesia's Own Tax Holidays Worth Less
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7 min read
If you have read anything about Indonesia trying to lure electric vehicle or petrochemical investment with a "tax holiday," here is a number that just changed the math: 15%. That is the tax rate at the center of the OECD's global minimum tax, a rule now written into more than 140 countries' law, Indonesia included, that says almost every large multinational company must pay at least 15% tax on its profits somewhere, no matter how generous a host country's tax break looks on paper. Indonesia's own version became law on 31 December 2024, and the OECD confirmed on 18 August 2025 that it meets the global standard. If a foreign investor's tax holiday drops its effective tax rate in Indonesia below that 15% floor, someone still collects the difference, and as of this year, it is more likely to be Jakarta than the investor's home country.
The global minimum tax is the common name for "Pillar Two" of a deal reached by the OECD/G20 Inclusive Framework, a group of more than 140 countries that coordinate international tax rules. It applies to multinational enterprise (MNE) groups, meaning companies with operations in more than one country, that have consolidated group revenue above €750 million a year. For a group that size, every country it operates in must tax its profits at an effective tax rate (ETR), the actual share of profit paid in tax after every deduction and incentive, of at least 15%.
If a group's ETR in one country falls below that floor, a backstop mechanism collects a "top-up tax" to close the gap. There are three ways this can happen: the Income Inclusion Rule (IIR) lets the parent company's home country collect the shortfall, the Undertaxed Payment Rule (UTPR) is a fallback if the IIR does not apply, and a Qualified Domestic Minimum Top-up Tax (QDMTT) lets the country where the profit was actually earned collect it first, before either of the other two can.
Indonesia's Ministry of Finance implemented the global minimum tax through Regulation PMK 136/2024. Here is the timeline so far, compiled from the regulation itself and from Big Four and mid-tier tax advisory coverage of it:
| Date | What happened |
|---|---|
| 31 Dec 2024 | PMK 136/2024 signed, implementing the global minimum tax domestically |
| 1 Jan 2025 | Rules take effect for fiscal years starting on or after this date, including Indonesia's own QDMTT |
| 18 Aug 2025 | The OECD formally designates PMK 136/2024 as "qualified," alongside 41 other countries' IIR and 42 other countries' DMTT |
| 1 Jan 2026 | The UTPR backstop takes effect in Indonesia |
| 31 Dec 2026 | First top-up tax payments fall due |
| 30 Jun 2027 | First compliance filings due, for in-scope groups with a fiscal year ending 31 Dec 2025 |
(Timeline per BDO Global and MUC Consulting, both independently reporting the same 18 August 2025 OECD qualification date and mechanism counts.)
That 18 August 2025 date matters more than it looks. Because Indonesia's QDMTT is now "qualified," Indonesia itself gets first claim on any top-up tax owed by a large multinational operating inside its borders. Before that qualification, the same shortfall could instead have flowed to the tax authority in the investor's home country under the IIR. In practice, being "qualified" means Jakarta, not another government, collects money that used to sit inside a company's tax break.
Indonesia's main investment incentive, its corporate income tax (CIT) "tax holiday," runs under Regulation PMK 69/2024. It grants CIT reductions of up to 100% for new investments of at least Rp100 billion (roughly US$6 million) in pioneer industries such as pharmaceuticals, electric vehicles, petrochemicals, robotics and renewable energy, for a period of five to twenty years depending on how large the investment is, per Jakarta Globe and XPND.
A 100% CIT holiday can push a qualifying company's Indonesian ETR toward 0% for the length of the exemption. That used to be a straightforward win for the investor. Under the global minimum tax, a near-0% ETR is exactly the kind of gap the 15% floor is designed to close, and for any MNE group above the €750 million threshold, it now is closed, with Indonesia's own qualified QDMTT collecting the top-up itself, per analysis from MUC Consulting and an academic review published in the journal International Public Sector Accounting Review (IPSAR).
Put plainly: for a large enough multinational, a full tax holiday no longer means paying close to nothing in Indonesia. It means paying close to nothing to Indonesia's regular corporate tax system, then paying roughly the same amount anyway as a top-up tax, just under a different name and a different rule.
The tax holiday framework under PMK 69/2024 was due to expire at the end of 2025. Febrio Nathan Kacaribu, the Finance Ministry's Director General of Fiscal and Economic Stability, said the ministry is preparing a new regulation to extend the incentive into 2026 while redesigning it to survive the global minimum tax's math, per Jakarta Globe.
One tool already introduced for this: the Qualified Refundable Tax Credit (QRTC), a subsidy paid or credited to the investor directly rather than delivered as a lower tax rate. Because a QRTC does not lower the ETR calculation the way a rate exemption does, it can keep an incentive's cash value intact without tripping the 15% floor, per MUC Consulting. In effect, Indonesia is having to swap a tax break that a global rule can now partly claw back for one the rule cannot touch.
You will not see a tax holiday's fine print on a stock chart, and this rule change does not directly move the price of any listed company. What it does is quietly reduce one of Indonesia's tools for out-bidding other countries on foreign investment, since a tax break that a 15% global floor can partly reclaim is no longer the strong pull it used to be. That matters for the same reason foreign direct investment (FDI) flows matter to anyone tracking Indonesia's macro picture: it is one of the channels behind the capital flows NetWort has already covered in Portfolio Investment vs FDI: how the two kinds of foreign capital flowing into Indonesia differ.
You cannot check a company's effective tax rate on NetWort. What you can check is the broader climate this rule is meant to influence. NetWort's Macro Context page tracks Indonesia's BI rate, inflation and GDP growth alongside global indicators like the Fed rate and the dollar index (DXY), the same backdrop that shapes whether Indonesia's incentives, tax-based or otherwise, are still worth a multinational's attention.