Japan’s Defense Ministry Puts Next Buildup Plan at $507.8 Billion
Key Facts
Japan’s Defense Ministry has estimated the cost of strengthening defense capabilities at about 80 trillion yen, or $507.8 billion, over five years starting in April 2027, Reuters reported on November 2, citing a Sankei newspaper report and government sources. The request is nearly 1.8 times the 43 trillion yen allocated for the current five-year plan, which began in fiscal 2023. The ministry’s estimate does not settle how much spending the government will approve; discussions are expected to focus on a figure in the range of 70 trillion yen because of limited financial resources. The gap puts a financial ceiling under discussion for the new buildup plan, ahead of final approval of its allocations. One source said the new spending is expected to fund purchases of large numbers of drones, while the weak yen is raising the cost of buying defense equipment.
The proposed plan follows a major increase in the existing program; Japan raised its five-year defense spending allocation to 43 trillion yen from 27.5 trillion yen under the previous plan, Reuters reported. The current allocation covers five years through fiscal 2027, while the proposed new period begins in April of that year. The move from 27.5 trillion yen to 43 trillion yen shows the scale of the increase preceding the next review, while the ministry’s new estimate would raise the potential commitment to a higher level. The gap between the 80 trillion yen estimate and the 70 trillion yen range expected to be discussed by the government remains central to determining the cost. Reuters linked the focus on the lower range to limited financial resources.
Spending priorities in the current program include long-range missiles for counterstrike capabilities, as well as ammunition and spare parts for military equipment, Reuters reported. The next program is expected to prioritize purchases of large numbers of drones, according to one of the sources cited in the report. The spending path thus combines developing missile capabilities and securing supplies needed to operate existing equipment with adding drones to defense procurement. Funding imported equipment faces additional pressure from the weak yen, which is increasing the cost of purchases, the source told Reuters. The report did not specify the size of the increase in procurement costs or how much the new plan would allocate to each item.
Japan plans to review its defense buildup program a year ahead of its original schedule, Reuters reported. The report said the review comes amid a deteriorating security environment driven by Russia’s invasion of Ukraine and the expansion of Chinese maritime activity. Bringing the review forward gives the government a chance to reconsider the program before its previously scheduled date, as it prepares the five-year plan beginning in April 2027. The agenda combines responding to security changes and defining military capability needs with choosing a level of spending that can be financed. The report gave no date for approval of the new plan or final decision on its financial ceiling.
On monetary policy, the interest rate applied to the Bank of Japan’s complementary deposit facility has been 1.25% since September 24, 2026, according to the bank’s official website. The bank’s schedule lists publication of the minutes of its October 29 and 30 monetary policy meeting on November 10, 2026. That date follows the meeting, and the bank’s schedule does not link publication of the minutes to a decision on funding the defense plan. In industrial activity, output rose 2.2% month on month in September 2026, after contracting 2.4% in August, exceeding forecasts for a 1.2% increase, according to RTTNews. The report attributed the increase to vehicles, production machinery and business-oriented machinery, partly offset by weakness in metals, ceramics and chemicals.