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Japan Mulls Raising Defence Spending to 3.5 % of GDP Amid U.S. Pressure

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Core Development: Proposed Mid-Term Defence Target

Japan is weighing a new mid-term defence-spending goal of either 3 % or 3.5 % of gross domestic product (GDP). The proposal would be embedded in a five-year defence plan slated for release by the end of 2026. If adopted, the target would align Japan with the NATO benchmark that most U.S. allies have pledged to reach by 2035 and would mirror South Korea’s 3.5 % commitment over a ten-year horizon.

Background & Context

Until 2022 Japan adhered to an informal cap of roughly 1 % of GDP on defence outlays. A 2022 decision lifted that ceiling, allowing the government to accelerate spending to almost 2 % of GDP in the fiscal year that ended in March 2026—two years ahead of schedule. The shift follows sustained encouragement from the United States, including remarks from the Trump administration, to bolster Japan’s self-defence capacity and lessen reliance on U.S. forces.

Data & Statistics

  • Current spending: ¥10.6 trillion (? $68.8 billion) equals 1.9 % of nominal GDP in 2022; using the Cabinet Office’s GDP forecast for the current fiscal year, the share falls to 1.5 %.
  • Target budget: A 3.5 % share would require roughly ¥24 trillion, more than double the present level.
  • Fiscal request: The Defence Ministry’s budget request for the fiscal year beginning April 2027 is ¥8.9 trillion, a 0.9 % increase over the current year, though many line items lack projected costs, suggesting the final figure could be higher.
  • Market reaction: Japanese defence-related shares (e.g., IHI Corp, Kawasaki Heavy Industries Ltd) rose just over 1 % after the proposal surfaced, while government-bond yields climbed to the highest level since 1996, with the benchmark 10-year yield reaching 3 %. The yen weakened to about 154.9 per dollar.

Official Statements & Responses

  • U.S. stance: Elbridge Colby, U.S.
  • She paired this defence push with a growth plan targeting more than ¥370 trillion in combined public and private investment by 2040.
  • The Defence Ministry did not comment further, and the Pentagon declined to respond.

Verbatim Quotes

  • “Whether it’s over five years or 10 years, I don’t see any alternative given how important the US alliance is,” — Robert Ward, Japan Chair at the International Institute for Strategic Studies
  • “There are fiscal concerns, as shown in the bond market reaction, so it’s difficult for investors to take news like this positively,” — Daisuke Aiba, an analyst at Iwai Cosmo Securities Co

What’s Next

A revised five-year defence-spending strategy is expected by the end of 2026, at which point the government will indicate whether the 3 % or 3.5 % target will be pursued. The timeline for any formal adoption will depend on domestic fiscal assessments and the pace of U.S. alliance expectations.