Does a government carry trade earn large returns on its balance sheet?
Core argument: Japan's government has realized an ex-post excess return of about 2.13% per annum above its funding cost by holding long-duration risky assets financed with mostly short-duration funding in the form of bank reserves, T-bills, and bonds.
We show that Japan’s government has engineered a sizeable duration mismatch on its consolidated balance sheet. The Japanese government implements a sizeable carry trade, and it earns high realized asset returns while its borrowing rates decline. Japan’s government has realized an ex-post excess return of about 2.13% per annum above its funding cost by going long in long-duration risky assets, financed with mostly short-duration funding in the form of bank reserves, T-bills, and bonds. This investment strategy has allowed the government to earn more than 3% of GDP from its risky investments.





