Yen soars as Bank of Japan tipped to raise interest rates
The Japanese yen surged more than 1.7% against the dollar on Thursday amid growing speculation that the Bank of Japan is preparing to raise interest rates, pushing the currency to its highest level in a month. The move follows remarks from BoJ policymaker Hajime Takata suggesting the bank needs to act more "nimbly", which markets interpreted as a sign of an imminent, decisive rate rise. The jump comes amid broader jitteriness in global markets following a sharp sell-off in government bonds this week, driven by fears of renewed inflation linked to higher oil prices.
The yen reached 155.85 against the dollar, having already climbed 0.9% the previous day, with markets now pricing in a 77% chance of a rate rise at the BoJ's meeting starting on 17 September, having held rates at 1% in July. Japan's vice-finance minister Atsushi Mimura said officials remained on "heightened alert", while analysts noted the scale of the currency's swing reflected fragile market sentiment. The wider bond turmoil, which pushed UK 10-year gilt yields close to 5.3% – their highest since 2008 – before easing to around 5.1%, was fuelled by a hawkish speech from US Federal Reserve chair Kevin Warsh warning of further action if inflation fails to return to target.
In short
- Yen jumps 1.7% on bets Bank of Japan will raise interest rates
- Markets see 77% chance of a September rate rise
- Move follows global bond sell-off and Fed inflation warning
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
A rate rise could help contain inflation and support the yen, easing pressure on households and businesses that rely on imported fuel and other goods. Acting promptly may also show that the Bank of Japan is responding nimbly to changing conditions and can keep inflation expectations anchored.
The case against
Raising rates while global markets are already unsettled could intensify bond volatility and make borrowing more costly for households, firms and the government. The yen’s sharp move reflects fragile sentiment, so waiting for clearer evidence on inflation and the economic outlook could reduce the risk of tightening policy too quickly.
Explained simply
The yen is Japan’s currency, and its value against the US dollar affects the cost of imports and the price of Japanese goods sold abroad. The Bank of Japan sets interest rates to influence borrowing and spending; higher rates can make yen-based investments more attractive.
The bank has kept its key rate at 1% after years of very low rates. Its policymakers decide whether and when to change it, while Japan’s finance ministry monitors sharp currency moves and can respond if markets become disorderly.
Interest-rate expectations also move with inflation and conditions in other countries. Bond yields, which reflect the returns investors demand for lending to governments, can rise when investors expect inflation or higher rates; shifts in global markets can therefore affect currencies as well as borrowing costs.
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