
The tipping point in the Japanese government bond market
Low government bond yields (0.76% for 10-year maturity at present) allow Japan to preserve debt sustainability despite a gross debt-to-GDP ratio of over 220%. However, a working paper published (a while ago) by Takeo Hoshi and Takatoshi Ito argues that a tipping point may be ahead. Thus far yields have been kept low thanks to large domestic savings with a strong home bias and low returns in other assets. Under current trends, however, the nominal public debt stock will have reached the overall level of private sector financial assets by 2016. Meanwhile, attempts to reflate assets and stimulate the economy will raise the opportunity costs of holding government debt.