Japan Considers Nearly Doubling Defense Spending to 80 Trillion Yen Over Five Years

Proposed Scale of the Increase

The Japanese government and ruling coalition are examining a defense buildup budget of 70 trillion to 80 trillion yen for the five years beginning in April 2027. At current exchange rates that range equals roughly 457 billion to 508 billion dollars. The current five-year plan, which started in fiscal 2023, allocated about 43 trillion yen. The new figures would represent an increase of approximately 1.8 times.

Prime Minister Sanae Takaichi has made strengthening military capabilities a priority. The proposal remains under discussion as the government prepares the year-end budget and revises three security-related documents. The Defense Ministry has declined to comment on the figures.

Drivers of the Review

One source familiar with the talks said the additional funds would support purchases of large numbers of drones. A weaker yen has raised the yen cost of imported defense equipment, adding pressure to the overall envelope. A second source indicated that the final number could settle in the mid-to-late 70 trillion yen range and questioned whether even that sum would prove sufficient given the security environment in East Asia.

The debate occurs against the background of existing defense cooperation with the United States and regional concerns involving China and North Korea. Any adopted plan would still require parliamentary approval and could be adjusted during the formal budget process.

Timing and Next Steps

Officials expect the outline to be refined as the government compiles spending requests and coordinates with coalition partners. The three security documents that set Japan's medium-term defense posture are also due for revision. No public schedule has been announced for the final decision.

The proposed increase continues a multi-year trend of higher defense outlays. If approved at the upper end of the range, the five-year total would mark the largest sustained rise in Japanese defense spending in the post-war period. Implementation would depend on both fiscal capacity and the detailed capability priorities that emerge from the ongoing review.