Bank Indonesia (BI) kept its benchmark BI-Rate at 5.75% at its Board of Governors meeting on 22–23 September 2026, the third consecutive hold. The deposit facility stayed at 4.75% and the lending facility at 6.50%, according to the official BI press release.

The pause follows a rapid tightening cycle. For homeowners with a Kredit Pemilikan Rumah (KPR), the question is not whether the rate went up — it did — but when, and how much, that increase reaches their monthly instalment.

How fast rates moved in 2026

BI's own BI-Rate data table shows the policy rate unchanged at 4.75% from January to April 2026. Then, in roughly four weeks:

Date Decision BI-Rate
20 May 2026 +50 bps 5.25%
9 June 2026 (weekly Board of Governors meeting) +25 bps 5.50%
18 June 2026 +25 bps 5.75%
July, August, September 2026 Hold 5.75%

Sources: BI press releases for May, 9 June and 18 June.

In total, the policy rate rose by 100 basis points (one percentage point).

Why BI tightened

BI has framed every decision since May around defending the rupiah. In the June release, the central bank said the hike was meant to strengthen exchange-rate stability amid global uncertainty linked to the war in the Middle East, with the rupiah at Rp17,730 per US dollar. By 22 September the currency stood at Rp17,855, 0.78% weaker than at the end of August, according to the September release.

Inflation has also drifted up. Consumer prices rose 3.19% year on year in August 2026, from 2.88% in July — still inside BI's 2.5% ± 1% target band, but closer to its upper half. In the September statement BI said holding the rate was "consistent with the strategy of stabilising the rupiah exchange rate amid still-strong external pressure" (NDNews translation of the Indonesian-language release).

How the BI-Rate reaches your KPR

Most Indonesian mortgages start with a fixed rate for an initial period (commonly one to five years) and then switch to a floating rate that the bank reviews periodically. The floating rate is not the BI-Rate itself. Banks price it from their Suku Bunga Dasar Kredit (SBDK, the prime lending rate), plus a risk premium for each borrower.

Banks publish their SBDK by segment, including KPR; BTN's disclosure, for example, cites OJK Regulation No. 13 of 2024 as its basis. The SBDK is built from three parts: the cost of funds, overhead costs and a profit margin. A higher BI-Rate raises the cost of funds over time, but the pass-through is gradual and differs by bank.

That lag shows up in the latest published figures:

Bank KPR SBDK Effective / period
BCA 9.06% Effective 31 Aug 2026 (July data); 9.14% in the two previous months
BTN 7.95% (KPR/KPA) Effective 1 Sep 2026
Bank Mandiri 11.75% Latest shown on its site (31 May 2026 data)

Sources: BCA SBDK, BTN SBDK, Bank Mandiri SBDK.

Two points matter here. First, the SBDK excludes the individual risk premium, so the rate a borrower actually pays is typically higher. Second, BCA's KPR benchmark has not yet risen since the hikes. That is consistent with a slow transmission, but it also means further repricing is still possible if funding costs keep climbing.

Why this matters for the housing market

Mortgages remain the main way Indonesians buy homes. BI's Residential Property Price Survey for Q2 2026 found that 70.05% of primary-market home purchases used a KPR. The same survey showed residential prices up just 0.69% year on year. Sales still contracted by 2.36%, though that was a sharp improvement from a 25.67% contraction in the first quarter. A market this dependent on credit is sensitive to even small changes in mortgage pricing.

What a one-point change looks like

The table below is an illustration only. It assumes a Rp500 million loan over 20 years with a standard annuity (equal monthly payments), calculated by NDNews. Real floating-rate resets apply to the remaining balance and remaining tenor, so your figures will differ.

Interest rate Monthly instalment
9% ≈ Rp4.50 million
10% ≈ Rp4.83 million
11% ≈ Rp5.16 million
12% ≈ Rp5.51 million

Each additional percentage point adds about Rp325,000–345,000 a month, or close to Rp4 million a year, on this loan size.

What borrowers can check now

This is general information, not financial advice. Terms differ by bank and contract.

  1. Find the end date of your fixed period. Borrowers whose fixed rate expires in the next 6–12 months are the most exposed to the June repricing.
  2. Ask your bank how the floating rate is set. Ask which reference it follows (SBDK or another benchmark), how often it resets, and whether there is a cap.
  3. Price a refinancing (take-over) properly. Include early-repayment penalties, provision fees, appraisal and notary costs, not just the headline promotional rate.
  4. Stress-test your budget. Check that you can still pay if the rate rises by one to two percentage points from today.
  5. Consider partial prepayment if your contract allows it without heavy penalties. A lower balance reduces the impact of any future reset.

What to watch next

  • BI's next policy meetings. Any move away from the hold will depend largely on the rupiah and inflation.
  • Monthly inflation data from BPS-Statistics Indonesia, released at the start of each month.
  • Bank SBDK updates, published monthly. A rise in the KPR segment is the clearest early signal that floating mortgage rates are moving.
  • Credit data. BI reported total loan growth of 13.65% in August, but consumer loans grew only 5.07%, a sign that households are borrowing cautiously.

For how the government is trying to keep more export dollars onshore — one of the forces behind the rupiah — see our explainer on Indonesia's new single-door commodity export system.

This article was researched with AI assistance and reviewed by the NDNews editorial team. Figures are taken from the linked official sources as of 25 September 2026.