# Bank of Japan raised rates by 25 basis points

*Economics. 94% certain. Friday, 18 September 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**On the same day Japan lifted rates, Brazil trimmed them and the United Kingdom kept its policy unchanged.**

Japan, Brazil and the United Kingdom announced contrasting monetary-policy moves in September. The Bank of Japan increased its policy rate by 25 basis points on Friday, 18 September. The Bank of Brazil cut its rate by the same amount on Tuesday, 15 September, while the Bank of England left its rate unchanged on Thursday, 17 September.

The Bank of Japan raised its policy rate by 25 basis points. The increase moved the Bank's stance toward tighter monetary conditions.

The Bank of Brazil reduced its policy rate by 25 basis points. The reduction signaled a shift toward a more accommodative stance.

The Bank of England kept its policy rate unchanged. The decision was finalized on Thursday, 17 September. The hold maintained the prevailing monetary stance.

## Analysis

The three divergent actions illustrate how major central banks are responding to local economic conditions rather than following a single global trend. Japan's tightening adds upward pressure on the yen, while Brazil's easing could weaken the real, and the United Kingdom's steady stance leaves the pound largely unchanged.

Brazil's 25-basis-point cut suggests policymakers see room to support growth, possibly by lowering borrowing costs. The easing may help stimulate domestic demand, but it also raises questions about the central Bank's confidence in containing inflation. The net effect on capital flows will depend on how investors weigh the lower rates against any perceived inflation risk.

The United Kingdom's decision to hold rates steady indicates a cautious approach amid ongoing inflation monitoring. By keeping policy unchanged, the Bank of England avoids adding volatility to the pound while allowing time to assess price developments. The stance provides a reference point for businesses and investors awaiting clearer signals from future data.

## What this was built from

- **Bank of Japan Decision in September?**: 25 bps increase, 97%; settles Friday, 18 September 2026 (polymarket). [Market](https://polymarket.com/event/bank-of-japan-decision-in-september-20260616002734979)
- **Bank of England decision in September?**: No change, 94%; settles Thursday, 17 September 2026 (polymarket). [Market](https://polymarket.com/event/bank-of-england-decision-in-september-20260623013317237)
- **Bank of Brazil decision in September?**: 25 bps decrease, 97%; settles Tuesday, 15 September 2026 (polymarket). [Market](https://polymarket.com/event/bank-of-brazil-decision-in-september-20260616232552895)