Japan fiscal health and debt risks

Discussions regarding Japan’s fiscal health have focused on the relationship between national debt, GDP, and currency fluctuations. Initial analysis suggested that projected GDP declines are linked to a transition toward a weak yen rather than domestic economic contraction. While gross debt exceeds 200% of GDP, net debt is estimated at approximately 78% when accounting for substantial government holdings in domestic equities and foreign securities, such as US Treasuries.

Risks persist regarding the government’s balance sheet, specifically the use of short-term, yen-denominated debt to fund long-term foreign currency and equity assets. A sharp appreciation of the yen or rising interest rates could cause significant valuation losses on these assets and increase debt servicing costs.

By late August, 10-year government bond yields reached levels not seen in nearly 30 years, intensifying debates over national financial risks. On a regional level, Hyogo Prefecture was designated as a ‘debt issuance permission entity,’ requiring national approval for local bonds after its real debt service ratio rose above 18% due to past investments and increasing interest costs.