The Federal Reserve expands its balance sheet by creating new reserves to buy Treasury and mortgage-backed securities, and it normalizes the balance sheet by letting those holdings mature without replacement or selling them back into the market. Expansion loosens financial conditions and pushes long-term rates down; normalization does the opposite. As of March 2026, total assets stood at roughly $6.7 trillion, down from a pandemic-era peak near $9 trillion but still well above the pre-2008 level of about $900 billion.1Federal Reserve Bank of St. Louis. Total Assets (Less Eliminations from Consolidation) Understanding the Federal Reserve balance sheet expansion and normalization process is the key to reading what the Fed is actually doing, because the size of the ledger shapes liquidity, interest rates, and the government’s own revenue.
What Sits on the Balance Sheet
The asset side is dominated by two categories. Treasury securities account for about $4.4 trillion of the Fed’s holdings, and mortgage-backed securities make up roughly another $2 trillion.2Federal Reserve. Federal Reserve Balance Sheet: Factors Affecting Reserve Balances – H.4.1 Smaller items include loans to banks through the discount window, gold certificates valued at the statutory rate of $42.22 per fine troy ounce set in 1973,3Office of the Law Revision Counsel. 31 USC 5117 – Transferring Gold and Gold Certificates and foreign currency reserves.
The liability side is what the Fed owes to the rest of the economy. Currency in circulation, meaning every physical banknote, shows up here. So do reserve balances, which are deposits commercial banks maintain at the Fed to settle transactions with each other. Assets and liabilities have to match: every dollar of securities the Fed buys is matched by a dollar of new reserves or currency it creates. That’s why watching the total is informative. Growing assets means liquidity is being injected; shrinking assets means liquidity is draining out.
One accounting detail matters for reading the numbers. The Fed records its securities at amortized cost, not market value.4Federal Reserve. Financial Accounting Manual for Federal Reserve Banks When rates rose sharply in 2022 and 2023, the market value of the Fed’s bond portfolio fell far below book value, but that unrealized loss doesn’t appear on the ledger and doesn’t threaten solvency, because the Fed holds bonds to maturity and creates its own reserves.
How Expansion Works
Expansion, commonly called quantitative easing, works through open market purchases. The Fed selects specific securities and buys them from a network of 26 primary dealers, the large financial institutions authorized to trade directly with the Fed.5Federal Reserve Bank of New York. Primary Dealers It doesn’t use tax revenue or borrowed money. It creates new electronic reserves and credits them to the seller’s bank account.
The mechanical sequence is simple. The Fed takes delivery of a bond and adds it to its portfolio. Simultaneously, it credits the seller’s bank with new reserves. The bond appears as an asset; the reserves appear as a liability. Both sides grow by the same amount. These transactions run under Section 14 of the Federal Reserve Act and directives the Federal Open Market Committee issues to the trading desk at the New York Fed.6Federal Reserve. Federal Reserve Act Section 14 – Open-Market Operations7eCFR. 12 CFR Part 270 – Open Market Operations of Federal Reserve Banks
The point is to swap relatively illiquid long-dated bonds for highly liquid bank reserves. With more reserves in the system, banks have greater lending capacity, long-term interest rates face downward pressure because the Fed is absorbing supply of long-dated bonds, and asset prices tend to rise. Across the three major QE episodes between 2008 and 2022, the balance sheet grew from under $1 trillion to nearly $9 trillion.
QE does not automatically produce inflation. New reserves sit in the banking system and only translate into broader price increases if banks lend aggressively and demand outstrips supply. The Fed’s 2 percent inflation target is the framework for calibrating these purchases. During 2020 and 2021, the combination of large-scale QE and pandemic-driven supply constraints eventually produced the highest inflation in four decades, which forced the tightening cycle that followed.
How Normalization Works
Normalization, or quantitative tightening, reverses the process. The Fed shrinks its holdings, and reserves come out of the banking system.
Passive Runoff
The gentler method is passive runoff. When a bond the Fed holds matures, the government pays back the principal. Instead of reinvesting into new securities, the Fed lets the money disappear from its ledger. The asset is gone, and the corresponding reserves vanish with it. During the 2022–2025 QT cycle, the FOMC set monthly caps on how much could roll off, letting a fixed dollar amount expire each month while reinvesting the rest.
Active Sales
The more aggressive option is selling securities directly into the market before maturity. When the Fed sells a bond to a private investor, it receives existing reserves in payment and pulls them out of circulation. Active sales shrink the balance sheet faster but risk disrupting market pricing. The Fed used this approach sparingly during recent cycles, preferring the predictable pace of passive runoff.
Where Normalization Stands in 2026
The most recent QT cycle ended formally on December 1, 2025, when the FOMC directed the trading desk to roll over all maturing Treasury principal at auction and reinvest all agency mortgage-backed securities principal into Treasury bills.8Federal Reserve Board. Policy Normalization9Federal Reserve. Implementation Note Issued March 18, 2026 The balance sheet is no longer actively shrinking. At roughly $6.7 trillion, it remains far larger than its pre-crisis baseline, reflecting the Fed’s commitment to operating with ample reserves rather than returning to the scarce-reserve environment of the pre-2008 era.
What the Fed Is Legally Allowed to Buy
The Fed cannot buy just anything. Section 14 of the Federal Reserve Act limits open market purchases to bonds and notes of the United States, certain short-term state and municipal obligations with maturities of six months or less, obligations of U.S. government agencies, and foreign government debt.6Federal Reserve. Federal Reserve Act Section 14 – Open-Market Operations The same categories appear in 12 U.S.C. § 355, which further requires that direct U.S. government obligations be bought and sold “only in the open market.”10Office of the Law Revision Counsel. 12 USC 355 – Purchase and Sale of Obligations of National, State, and Municipal Governments; Open Market Operations
This is where a common assumption goes wrong. The Fed cannot buy corporate stocks, private-sector bonds, or real estate as part of ordinary QE. During the pandemic, facilities that supported corporate credit markets operated through Treasury-backed vehicles under emergency authority, not through open market purchases. The statutory list is the boundary between routine monetary policy and everything else.
Why the Balance Sheet No Longer Sets Rates Directly
Before 2008, the Fed kept reserves deliberately scarce and moved the federal funds rate by making small adjustments to the supply. Tiny changes in reserves translated into meaningful rate movements. That world is gone. In January 2019, the FOMC formally committed to an ample reserves framework, where the balance sheet stays large enough that the supply of reserves never constrains day-to-day banking operations. Reserve requirements themselves have been set to zero since March 2020;11Federal Reserve Board. Reserve Requirements the statute at 12 U.S.C. § 461 remains on the books,12Office of the Law Revision Counsel. 12 USC 461 – Reserve Requirements but banks now hold reserves voluntarily.
With reserves abundant, the Fed controls short-term rates by setting the price it pays on them rather than by rationing the quantity. The interest rate on reserve balances, known as IORB, is currently 3.65 percent.13Federal Reserve Board. Interest on Reserve Balances14Federal Reserve Bank of St. Louis. Interest Rate on Reserve Balances (IORB Rate) No bank will lend reserves to another bank for less than what the Fed itself is paying, so IORB acts as a floor. The federal funds rate target range currently sits at 3.50 to 3.75 percent.
Money market funds and other non-bank institutions can’t earn IORB, so the Fed offers them a separate floor through the overnight reverse repurchase agreement facility, or ON RRP. Non-bank entities park cash at the Fed overnight for a guaranteed return, currently 3.50 percent.15Federal Reserve Board. Overnight Reverse Repurchase Agreement Operations Together, IORB and the ON RRP rate pin the federal funds rate inside its target range regardless of day-to-day fluctuations in reserve supply. This is why QT can proceed for years without meaningfully affecting the fed funds rate: the balance sheet influences longer-term yields and overall financial conditions, but short-term rates are set administratively.
The Fiscal Side Effect: The Deferred Asset
Balance sheet operations have a direct fiscal consequence most people overlook. Under normal circumstances, the Fed earns interest on its bond holdings, covers operating costs and dividends, and sends the remaining profit to the U.S. Treasury. In fiscal year 2021, those remittances exceeded $100 billion. That flow has now reversed.
When rates rose aggressively in 2022 and 2023, the cost of paying IORB on trillions of dollars in reserves began exceeding the interest income from the Fed’s older, lower-yielding bond portfolio. The result is a net operating loss. Rather than requesting an appropriation from Congress, the Fed records the loss as a “deferred asset,” essentially an IOU to itself. No remittances flow to the Treasury until the deferred asset is fully paid down.
As of late March 2026, the cumulative deferred asset stood at approximately $244 billion.2Federal Reserve. Federal Reserve Balance Sheet: Factors Affecting Reserve Balances – H.4.1 That figure represents foregone Treasury revenue that would otherwise have offset the federal deficit. The deferred asset doesn’t threaten the Fed’s ability to conduct monetary policy, since the Fed creates its own reserves and cannot become insolvent in the traditional sense. But taxpayers are effectively absorbing the cost of the rate-hiking cycle through reduced government revenue, and projections suggest remittances may not resume until 2027 or later.
Where to Track It
Every Thursday, the Fed publishes the H.4.1 statistical release, a detailed snapshot of the balance sheet including all major asset and liability categories, the status of lending facilities, and the current deferred asset position.16Federal Reserve. Federal Reserve Balance Sheet: Factors Affecting Reserve Balances – H.4.1 For anyone following expansion and normalization in real time, it’s the single most useful document the Fed produces. It’s publicly available, updated weekly, and contains enough granular data to reconstruct virtually every balance sheet operation the Fed has conducted.