Quantitative Tightening

The process by which a central bank shrinks its balance sheet — the reverse of quantitative easing — by allowing bonds to mature without reinvestment or by selling them outright.

Quantitative tightening (QT) reverses the asset accumulation of quantitative easing. The Fed's primary method is "passive runoff": when bonds on its balance sheet mature, proceeds are not reinvested, causing the balance sheet to shrink automatically. More aggressive QT involves actively selling securities before maturity, though this has been rare.

QT reduces the supply of bank reserves, which puts upward pressure on interest rates — particularly at the longer end of the yield curve. It can also reduce liquidity in specific bond market segments where the Fed was previously a massive buyer. The Fed conducted its first QT program from 2017 to 2019 and then launched a more aggressive round beginning in 2022.

The limits of QT are not well understood — it has only been attempted twice. The 2019 QT was halted abruptly after repo market stress in September signaled that reserves had been drained too much. Markets monitor QT closely because it represents a tightening of financial conditions beyond what is captured by the federal funds rate alone, and because misjudging the "neutral" balance sheet size could trigger unintended liquidity disruptions.

This definition is for informational and educational purposes only. Nothing on Finance Compass constitutes financial, investment, or trading advice. Always conduct your own research and consult a qualified professional before making financial decisions.