TOKYO, Feb 17 (Reuters) - Japan will likely see annual bond issuance surge 28% three years from now on rising debt-financing costs, a finance ministry estimate reviewed by Reuters showed on Tuesday, casting doubt on premier Sanae Takaichi's argument the country can deliver tax cuts without boosting debt.
Under the estimate, Japan would need to issue up to 38 trillion yen ($248.32 billion) worth of bonds in the fiscal year starting April 2029 to fill a hole from expenditure surpassing tax revenues, up from 29.6 trillion yen in fiscal 2026.
While tax revenues are expected to keep rising, they will not be enough to pay for a steady increase in spending as a rapidly ageing population and rising long-term interest rates push up social welfare and debt-servicing costs.
Debt-servicing costs will likely hit 40.3 trillion yen in fiscal 2029, up from 31.3 trillion yen in fiscal 2026 and roughly 30% of total expenditure, underscoring the strain rising bond yields would inflict on Japan's finances.
The estimate is based on a scenario assuming nominal economic growth of 1.5% and an average inflation rate of 1% with the 10-year Japanese government bond (JGB) yield moving at 3.0%.
In a scenario assuming nominal growth of 3% and an inflation rate of 2%, debt-servicing costs will hit 41.3 trillion yen in fiscal 2029.
($1 = 153.0300 yen)
(Reporting by Takaya Yamaguchi, writing by Leika Kihara; Editing by Sam Holmes)
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