Japan's central bank has increased its short-term policy rate to "around 1%," bringing borrowing costs to their highest level in 31 years as the nation adjusts to a sustained inflationary environment.

The 0.25 percentage point hike aligns with broad market expectations, with analysts noting it represents a crucial milestone in the Bank of Japan's efforts to normalize monetary policy following years of ultra-low interest rates and deflation.

The last time the Bank of Japan's policy rate reached 1% was in 1995, a period when the central bank was reducing borrowing costs after the collapse of Japan's asset bubble in the late 1980s.

Having lifted Japan out of negative interest rates in 2024, the central bank has now raised rates twice in 2025. Market observers anticipate the bank will establish a pattern of gradual tightening approximately every six months.

Ahead of Tuesday's decision, a growing number of economists indicated they expect at least one more rate increase from the Bank of Japan in 2026.

Tuesday's announcement followed a two-day policy meeting by the central bank's monetary policy committee. The committee operated with eight members, as Governor Kazuo Ueda was absent.

Governor Ueda, who is receiving treatment for a liver condition, did not attend the meeting or participate in the vote. He is expected to return for the July meeting. This week's session was chaired by Deputy Governor Ryozo Himino.

An afternoon press conference will be led by another deputy governor, Shinichi Uchida, whose comments will be closely scrutinized for indications of how the central bank continues to assess the negative economic impacts of the conflict in Iran.