Quantitative easing and tightening: the Fed’s balance sheet

Quantitative easing (QE) is a central bank buying large amounts of longer-term bonds, paid for with newly created bank reserves, to push down long-term interest rates when the short-term policy rate cannot go lower. Quantitative tightening (QT) is the reverse: letting those holdings shrink, usually by not reinvesting the money from bonds as they mature. Between them they took the Federal Reserve's balance sheet from under $1 trillion in 2007 to almost $9 trillion in 2022 and back to about $6.5 trillion by late 2025.

The policy rate and the balance sheet are the Fed's two big levers. The Federal funds rate: target range, IORB and the effective rate sets the price of overnight money; the balance sheet acts on the price of long-term money, the yields on 10-year Treasuries and mortgage-backed securities that drive mortgages and corporate borrowing. This guide explains the mechanics with a worked example, walks through every round since 2008 with dates and amounts from the Fed's own statements, and shows what the weekly balance sheet did.

How QE works

When the Fed buys a Treasury bond, it does not pay with cash from a vault. It credits the reserve account of the seller's bank at the Fed. That creates new reserves, and both sides of the Fed's balance sheet grow by the same amount.

Taking long-term bonds out of private hands has several effects:

• Lower long-term yields. Investors who sold bonds must buy something else, pushing up prices and pushing down yields on similar assets. Economists call this the portfolio balance effect; it shows up mainly as a lower term premium, the extra yield investors demand to hold long bonds instead of rolling short ones.
• Signaling. A large purchase program tells markets the Fed intends to keep the policy rate low for a long time.
• Market functioning. In a panic, such as March 2020, purchases give dealers somewhere to sell and keep Treasury and mortgage markets working.

QE is often described as "printing money." It does create reserves, which only banks can hold, but it does not automatically raise the broad money supply or lending; that depends on what banks and the sellers of the bonds do next. Money supply and M2: what it measures and what it tells you covers the link.

The balance sheet since 2003

The first leap, from $0.93 trillion to $2.24 trillion in the last four months of 2008, came before most of the bond buying. The Fed's November 25, 2008 announcement said the mortgage-backed securities purchases were intended to begin before year-end; much of the 2008 jump reflected the Fed's emergency lending to banks and markets during the crisis, which later ran off as QE purchases replaced it.

Every round, with dates and amounts

QE1 (2008–2010). On November 25, 2008 the Fed announced purchases of up to $100 billion of debt issued by the housing agencies and up to $500 billion of agency mortgage-backed securities. On March 18, 2009 the FOMC expanded the program: up to $750 billion more MBS (for up to $1.25 trillion in total), up to $100 billion more agency debt (up to $200 billion) and up to $300 billion of longer-term Treasuries over six months. The federal funds range had been 0% to 0.25% since December 2008.

QE2 (2010–2011). On November 3, 2010 the FOMC said it would buy a further $600 billion of longer-term Treasuries by the end of the second quarter of 2011, about $75 billion a month. Total assets rose from $2.30 trillion to $2.87 trillion.

Maturity extension (2011–2012). Rather than add assets, the Fed sold or let run off shorter Treasuries and bought longer ones, lengthening its portfolio. The balance sheet stayed near $2.8–2.9 trillion.

QE3 (2012–2014). On September 13, 2012 the FOMC began buying agency MBS at $40 billion a month with no fixed end date, tying the program to a substantial improvement in the labor market outlook. On December 12, 2012 it added Treasury purchases at an initial $45 billion a month. On October 29, 2014 it concluded the program, continuing to reinvest principal from maturing holdings. Assets peaked at $4.52 trillion in January 2015.

QT1 (2017–2019). The FOMC began its "balance sheet normalization program" in October 2017, reinvesting only part of maturing principal. On July 31, 2019, when it also cut the target range, it said it would conclude the reduction in August, two months earlier than it had planned. Assets fell 17%, from $4.52 trillion at the 2015 peak to $3.76 trillion.

QE4, the pandemic program (2020–2022). On Sunday, March 15, 2020 the FOMC cut the range to 0% to 0.25% and announced at least $500 billion of Treasuries and at least $200 billion of agency MBS over the coming months. On March 23 it dropped the dollar amounts and said it would buy "in the amounts needed to support smooth market functioning." Assets rose from $4.24 trillion on March 4 to $7.17 trillion on June 10. By late 2021 the pace was about $80 billion of Treasuries and $40 billion of MBS a month, judging from the size of the cuts announced when tapering began.

Tapering (2021–2022). On November 3, 2021 the FOMC began reducing purchases by $10 billion a month for Treasuries and $5 billion for MBS. On December 15 it doubled that pace, and on January 26, 2022 it said net purchases would end in early March. The balance sheet peaked at $8.97 trillion on April 13, 2022.

QT2 (2022–2025). From June 1, 2022 the Fed reinvested principal only above monthly caps: $30 billion for Treasuries and $17.5 billion for agency securities, rising after three months to $60 billion and $35 billion. It slowed the Treasury cap to $25 billion from June 2024 and to $5 billion from April 2025, leaving the agency cap at $35 billion. On October 29, 2025 it decided to conclude the reduction of its securities holdings on December 1. Assets fell from $8.97 trillion to a low of $6.54 trillion on December 3, 2025: $2.43 trillion, or 27%.

After QT (December 2025 onward). The implementation note effective December 11, 2025 directed the desk to increase holdings through purchases of Treasury bills to maintain an ample level of reserves. The October 2026 note keeps that instruction, rolls over all maturing Treasury principal and reinvests agency principal into bills. Total assets rose to $6.75 trillion by October 28, 2026. The stated aim is the level of reserves, not long-term yields: bills mature within a year, so buying them adds reserves while taking little duration out of the market, unlike QE's purchases of long bonds.

How QE and QT reach markets

• Long-term Treasury yields carry the direct effect. The 10-year yield fell from 1.88% on January 2, 2020 to a low of 0.52% on August 4, 2020, while the Fed bought trillions of Treasuries and held the policy rate at zero; but yields also respond to growth, inflation and the policy-rate path, so no single number isolates QE. See The 10-year Treasury yield: why it matters and what drives it.
• Mortgage rates respond to MBS purchases through mortgage spreads.
• Stocks feel it through lower discount rates and investors moving into riskier assets when safe yields are low. How interest rates affect stocks: discount rates and equity duration explains the discount-rate channel.
• Money markets feel QT most directly: as reserves shrink, overnight rates can drift higher within the target range. That is why QT is slowed and ended before reserves become scarce.

Pitfalls and limitations

• QE is not the same as fiscal stimulus. The Fed swaps reserves for bonds; it does not spend or give money away.
• Size is not the whole story. The composition (bills versus long bonds versus MBS) and the guidance around a program matter as much as the dollar amount.
• Effects are hard to measure. Programs were launched during crises, when many other things were moving.
• Balance-sheet growth is not always QE. The late-2008 jump came largely from emergency lending; the 2025–26 bill purchases are reserve management.
• QT is quieter than QE. Runoff happens automatically as bonds mature, so its effects build slowly and show up first in money markets.

QE, QT and rate changes compared

How Finabase does it

Finabase does not show Fed balance-sheet data, purchase schedules or reserve balances; the chart and table above are ours, built by Finabase Research from the Fed's weekly H.4.1 data on FRED. What the app does show is the part of the market QE and QT act on: the Treasury yields table from the 1-month bill to the 30-year bond, the 10-year yield, and long-duration bond funds such as TLT, whose price moves most when long-term yields change. For coverage of balance-sheet decisions, use Fed news on Discover.

Frequently asked questions

What is the difference between QE and QT?

QE is the Fed buying bonds with newly created reserves, which expands its balance sheet and pushes down long-term yields. QT is the Fed shrinking its holdings, mostly by letting bonds mature without reinvesting the proceeds, which drains reserves.

When did quantitative tightening end?

The most recent round ended on December 1, 2025, as the FOMC decided on October 29, 2025. Since December 11, 2025 the Fed has been buying Treasury bills to keep reserves ample.

How big is the Fed's balance sheet?

Total assets were $6.75 trillion on October 28, 2026, down from a record $8.97 trillion in April 2022 and up from a post-QT low of $6.54 trillion in December 2025.

Does QE cause inflation?

Not automatically. QE from 2008 to 2014 multiplied the balance sheet about five times while PCE inflation ran below 2% in 53 of the 72 months from 2009 to 2014. Inflation depends on spending, which depends on how the new reserves and lower yields feed into lending, asset prices and demand, alongside fiscal policy and supply shocks.

Summary

Quantitative easing is the Fed buying long-term bonds with new reserves to lower long-term yields when the policy rate is at zero; quantitative tightening lets those bonds run off. Four rounds of QE, in 2008–10, 2010–11, 2012–14 and 2020–22, took total assets from $0.89 trillion to a peak of $8.97 trillion in April 2022, and two rounds of QT, in 2017–19 and 2022–25, took them back down, most recently to $6.54 trillion when runoff ended on December 1, 2025. Since then the Fed has bought Treasury bills to keep reserves ample, and assets stood at $6.75 trillion in October 2026. The balance sheet acts on long-term yields and reserve levels, while the target range acts on overnight rates; read both to judge how tight policy is.