Is Japan about to loosen its grip on bonds?

The Bank of Japan remains the world’s last monetary outlier, but its grip on the domestic government bond market is becoming increasingly untenable. With headline inflation running comfortably above target and the yen lingering near 139 per dollar, speculation is mounting that Kazuo Ueda is preparing to loosen or dismantle the yield curve control (YCC) framework. Maintaining an artificial ceiling on ten-year JGB yields requires an unsustainable balance-sheet sacrifice.

The Price of Control

To defend the 0.5 per cent cap, the BoJ has been forced to absorb vast proportions of the JGB market, crushing secondary market liquidity and distorting the sovereign yield curve. Relaxing the band or shifting the policy anchor to shorter maturities would inject much-needed market discipline, but it carries immense cross-border risks. Higher domestic Japanese yields threaten to repatriate vast pools of overseas capital, draining liquidity from US Treasuries and European sovereign paper.

Dismantling yield curve control is essential for Japanese market functioning, but unclamping domestic yields will send shockwaves through global fixed-income portfolios hooked on cheap yen liquidity.