Yugo Koshima

This paper compiles and reviews the evolution of Japan’s Public Sector Balance Sheet (PSBS). In the past, large crossholdings of assets and liabilities within the public sector played a role in sustaining a high level of public debt and low interest rates. The Fiscal Investment and Loan Fund (FILF) channeled all postal deposits and pension savings to financing of public sector borrowing. After the FILF refrom in 2000, however, the Post Bank and pension funds shifted their assets to the portfolio investments and are seeking to maximize risk-adjusted returns. This has changed the implications of crossholdings for public debt management. In the future, population aging is expected to add more pressures on the PSBS, which already saw a considerable decrease of net worth over the last three decades.

Japan's Public Sector Balance Sheet

Jason Harris

Alexander F. Tieman

Alessandro De Sanctis

This paper compiles the Intertemporal Public Sector Balance Sheets for all G7 countries and examines their relationship with government borrowing costs. In 2018, all G7 countries have negative Intertemporal Net Financial Worth (INFW), falling short of their intertemporal budget constraint. A decomposition of the evolution of INFW shows that short-term fluctuations are mainly driven by fiscal policy changes, while in the long run demographic changes and health and pension obligations play a larger role. We find that on average a 10 percentage point of GDP increase in INFW reduces the (future) 10-1 year sovereign yield curve spread by 2.8 basis points. This results suggest that financial markets pay attention to governments’ future policy obligations, in addition to its current assets and liabilities.

Yugo Koshima

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