The people and institutions that own the U.S. national debt fall into two broad groups. About $30.1 trillion of the roughly $38.4 trillion total is debt held by the public, spread across foreign governments, the Federal Reserve, mutual funds, banks, pension funds, insurance companies, state and local governments, and individual American savers. The other roughly $7.3 trillion is intragovernmental debt, owed by the Treasury to federal trust funds like Social Security and military retirement.1U.S. Treasury Fiscal Data. Understanding the National Debt
The Two Categories of Debt Ownership
The Treasury tracks every outstanding dollar under one of two labels. Debt held by the public covers any Treasury security bought on the open market, whether the buyer is a household in Ohio, a bank in Frankfurt, or the Federal Reserve. Intragovernmental holdings are different. These are non-marketable securities that the Treasury issues to its own trust funds and revolving accounts when those programs collect more than they spend in a given year.
The distinction shapes how each type of debt behaves. Public debt is what financial markets watch. It reflects genuine borrowing from outside lenders and drives the interest costs that show up in the federal budget. Intragovernmental debt is an internal accounting obligation. The government owes the money to itself, and the economic impact arrives later, when trust funds redeem those securities to pay beneficiaries.
Federal Trust Funds and Other Government Accounts
When a federal trust fund runs a surplus, the extra money does not sit idle. By law, it is invested in special-issue Treasury securities available only to government accounts. The trust fund earns interest on those securities, and the Treasury spends the cash on general operations. It is a loan from one part of the government to another, and every dollar is tracked as a binding obligation.
Social Security dominates this category. The combined Old-Age and Survivors Insurance and Disability Insurance trust funds held about $2.6 trillion in special-issue securities at the end of 2025. Other major holders include the Military Retirement Fund, the Medicare Hospital Insurance trust fund, and the Civil Service Retirement and Disability Fund. Together these accounts make up the bulk of the roughly $7 trillion in intragovernmental debt.
Social Security has now started spending more on benefits than it collects in payroll taxes, meaning it is redeeming those special-issue securities rather than adding to them. The 2025 Trustees Report projects the OASI fund’s reserves will be exhausted by 2033, with payroll taxes covering about 77 percent of scheduled benefits after that point. The practical effect on ownership is straightforward: the intragovernmental slice held by Social Security will shrink over the next decade as the program draws down its holdings.
The Federal Reserve
The Federal Reserve is one of the single largest holders of Treasury securities. As of March 2026, its portfolio stood at about $4.4 trillion, down from a pandemic-era peak of nearly $5.8 trillion. The Fed buys and sells Treasuries through open market operations to influence interest rates and manage liquidity, with the Federal Open Market Committee setting direction and the New York Fed’s trading desk executing the trades.
Even though the Fed is part of the government’s structure, its Treasury holdings are counted as debt held by the public because the securities were purchased on the open market. In normal times, the Fed sends the interest it earns back to the Treasury as remittances, a circular flow that lowers the government’s net borrowing cost. That pattern broke during 2022 through 2025. As interest rates rose sharply, the Fed’s expenses on bank reserves exceeded its income, producing a cumulative “deferred asset” of about $242 billion by late 2025. The Fed will not resume regular remittances to the Treasury until that shortfall is cleared.
Foreign Governments and International Investors
Foreign investors held approximately $9.2 trillion in U.S. Treasury securities as of late 2025, roughly 31 percent of all debt held by the public. About 44 percent of that foreign total sits with official government institutions, mainly central banks, and the remaining 56 percent belongs to private foreign investors.
The country rankings have shifted noticeably. As of January 2026:
- Japan is the largest foreign holder at about $1.23 trillion.
- The United Kingdom is second at roughly $895 billion.
- China is third at approximately $694 billion, well below its peak above $1.3 trillion a decade ago.
- Belgium, Luxembourg, and the Cayman Islands make up the next tier, though those totals largely reflect global investment funds domiciled there rather than the host countries’ own reserves.
Foreign central banks buy Treasuries because they need a deep, liquid market for trade surpluses and currency reserves. Holding dollar-denominated assets also gives a central bank the ability to intervene in foreign exchange markets when it wants to stabilize its own currency. This steady foreign appetite has a side effect that benefits American borrowers: it helps keep U.S. interest rates lower than they would otherwise be.
Domestic Investors, Banks, and Funds
American households, businesses, and financial institutions hold a large share of the debt. Mutual funds and money market funds park enormous sums in Treasury bills and notes because they offer safety and easy liquidity. Commercial banks hold Treasuries as a liquidity buffer, and post-2008 regulations pushed them to keep more of their balance sheets in safe assets. Insurance companies and private pension funds prefer longer-term Treasury bonds to match the decades-long obligations they owe to policyholders and retirees.
Individuals can buy directly from the government through TreasuryDirect. Savings bonds (Series EE and Series I) are available for as little as $25 and, as of January 2025, are sold only in electronic form. Marketable Treasury notes and bills carry a $100 minimum. Series I bonds, which adjust for inflation based on the Consumer Price Index, have an annual purchase limit of $10,000 per Social Security number. The principal on any Treasury security is backed by the full faith and credit of the United States, a guarantee grounded in Congress’s constitutional borrowing power under Article I.
State and Local Governments
State and local governments are a smaller but meaningful slice of the picture. They invest pension fund assets, general operating reserves, and rainy-day funds in Treasury securities. A city fire department pension fund and a state teachers’ retirement system might both hold Treasury notes and bonds as the conservative anchor of their portfolios. Short-term Treasury bills give these entities a safe, accessible place to park cash they will soon need for payroll or infrastructure payments.
Why Ownership Matters
Every dollar of debt generates an interest obligation, and those payments flow to whoever holds the underlying security. In fiscal year 2025, the federal government paid roughly $970 billion in net interest. The Congressional Budget Office projects the figure will cross $1 trillion in 2026 and could reach $2.1 trillion annually by 2036 under current law. Interest already consumes close to one-fifth of all federal revenue and is headed toward one-quarter within a decade.
When a mutual fund owns a 10-year Treasury note, the coupon payments go to that fund’s investors. When Japan’s central bank holds a Treasury bill, the return goes to Tokyo. When the Federal Reserve holds Treasuries and is running a profit, the interest cycles back to the Treasury; when it is not, that flow stops. The composition of ownership decides where those hundreds of billions of dollars in annual interest actually land.