In 2023, Japan's military expenditure stood at 45.100 Billion US Dollars. Forecasts for the coming years indicate a steady increase in military spending: 46.655 Billion US Dollars in 2024, 46.968 Billion in 2025, 47.277 Billion in 2026, 47.584 Billion in 2027, and 47.888 Billion in 2028. The year-on-year variation shows a growth of approximately 1.2% from 2024 to 2025, 0.7% from 2025 to 2026, 0.6% from 2026 to 2027, and 0.6% from 2027 to 2028. Over a five-year period (2023-2028), the compound annual growth rate (CAGR) averages around 1.2% per year.
Future trends to watch include potential shifts in geopolitical tensions in the Asia-Pacific region, technological advancements in defense capabilities, and Japan's evolving national security strategy, which could all influence further changes in military expenditure. Additionally, economic conditions and international alliances will play critical roles in shaping Japan’s defense budget trajectory.