Bank of Japan Governor Haruhiko Kuroda said on Tuesday the central bank was ready to ramp up stimulus if sharp yen rises hurt the economy and derail the path towards achieving its 2 percent inflation target.
But he said the BOJ would carefully weigh the benefits and costs of any further policy easing, suggesting that the hurdle for topping up stimulus would be high given how financial institutions' profits have been hurt by years of near-zero interest rates.
"Currency moves could have an impact on the economy and prices, so it's crucial we take into account these factors when guiding monetary policy," Kuroda told parliament.
"If (currency moves) are having an impact on the economy and prices, and if we consider it necessary to achieve our price target, we'll consider easing policy," he said.
Kuroda made the remarks in response to a question by an opposition lawmaker on whether the BOJ had the necessary tools to boost stimulus to counter the pressure from a sharp yen rise.
The dollar received a mild lift versus the yen after Kuroda's remarks. It stood little changed at 110.655 yen after dipping as low as 110.45 earlier in the day.
Kuroda repeated that possible monetary easing tools the BOJ could deploy included cutting short- and long-term interest rates, expanding asset buying or accelerating the pace of money printing.
"Whatever we do, however, we need to carefully balance the benefits and the costs of the step such as the impact on financial intermediation and market functioning."