Quantitative Easing (QE)

Quantitative easing (QE) is an unconventional monetary policy in which a central bank buys large amounts of financial assets, mainly government bonds, paying with newly created bank reserves. Central banks reach for QE when their normal tool, the short-term policy rate, is already near zero and the economy still needs support.

Key takeaways

• QE means large-scale asset purchases financed with newly created central-bank reserves.
• The aim is to push down long-term interest rates and ease financial conditions broadly.
• The Bank of Japan pioneered QE in 2001; the Federal Reserve, ECB and Bank of England deployed it after 2008 and again in 2020.
• The reverse process, letting holdings shrink, is called quantitative tightening (QT).

How it is meant to work

Buying long-dated bonds raises their price and lowers their yield. That filters into mortgage rates and corporate borrowing costs, encourages investors to shift into other assets (the portfolio-rebalancing channel) and signals that policy will stay loose. Studies by central banks attribute meaningful declines in long-term yields to the post-2008 programmes, though estimates vary widely and disentangling QE from everything else is genuinely hard.

Scale and aftermath

The numbers are large: the Fed's balance sheet grew from under $1 trillion in 2007 to roughly $9 trillion at its 2022 peak before QT shrank it. Critics associate QE with inflated asset prices and wealth inequality; defenders credit it with averting deflation and deeper recessions. When inflation surged in 2021-2022, major central banks reversed course, raising rates and running down bond holdings simultaneously.

QE and "money printing"

QE creates bank reserves, not banknotes, and most of the new money stays inside the banking system. Whether and how it feeds consumer-price inflation depends on lending, demand and supply conditions, which is why Japan ran QE for years alongside low inflation while the post-2020 episode ended differently.

Frequently asked questions

Is QE the same as the government spending money?

No. QE is a central-bank asset swap (bonds for reserves). Government spending is fiscal policy decided by parliaments. The two interact but are institutionally separate.

What is quantitative tightening?

The unwind: the central bank lets bonds mature without reinvesting, or sells them, shrinking its balance sheet and removing reserves from the system.

Sources

• Federal Reserve, Credit and liquidity programs and the balance sheet
• Bank of England, What is quantitative easing?
• IMF, Unconventional monetary policies explained