A Treasury yield is the return an investor earns on U.S. government debt, set by what buyers are willing to pay at auction and in day-to-day trading. An interest rate is the price of borrowing money in any other context, set by a lender. The two are tightly linked but not the same, and the difference between a Treasury yield and an interest rate is what explains why your mortgage quote can change on a quiet Tuesday with no Fed meeting in sight.
The short version: Treasury yields come from the market. Interest rates on your loans, credit cards, and savings accounts are set by banks and other lenders, who build their rates on top of what the government is paying to borrow.
What a Treasury Yield Is
The U.S. Department of the Treasury raises money by selling debt. Short-term paper that matures in a year or less is called a Treasury bill. Medium-term securities with 2-, 3-, 5-, 7-, or 10-year terms are called notes. Long-term securities running 20 or 30 years are bonds. All of them carry the full backing of the federal government, which is why investors treat them as essentially risk-free.
These securities are sold through public auctions. Large institutions submit competitive bids specifying the yield they want; smaller buyers submit non-competitive bids agreeing to accept whatever yield the auction produces. The Treasury fills non-competitive bids first, then takes competitive bids from the lowest yield up until the offering is sold. Every winning bidder receives the same yield, set at the highest accepted competitive bid.1Bureau of the Fiscal Service. Financing – Section: The Auction Process Individual investors can take part through TreasuryDirect with a minimum of $100.2TreasuryDirect. Buying a Treasury Marketable Security
Coupon Rate Is Fixed, Yield Moves
Here’s where confusion often starts. Every note and bond has a coupon rate, the fixed annual interest payment stated as a percentage of face value. A $1,000 bond with a 3% coupon pays $30 a year, every year, no matter what happens next. The coupon never changes.
The yield does. If that same bond trades on the secondary market for $950, the $30 payment now represents about 3.16% of what the new buyer paid. That 3.16% is the current yield. When investors and analysts talk about “the yield” on a Treasury, they usually mean yield to maturity, which takes the calculation one step further by including the gain or loss you’ll realize when the bond matures at face value. Buy at a discount and yield to maturity is higher than the current yield; buy at a premium and it’s lower.
Bond prices and yields move in opposite directions by mechanical necessity. When new securities come to market with higher coupons, older bonds with lower coupons lose appeal, their prices drop, and the effective yield on those older bonds rises to match. The reverse happens when new issues pay less. This is why yields on existing Treasuries can shift minute by minute while the printed coupon never budges.
What an Interest Rate Is
Interest rate is the broader term. It covers what you pay on a car loan, what your credit card charges on a balance, what a bank earns lending to another bank overnight, and what a savings account pays you.
The most-watched interest rate in the United States is the federal funds rate, the rate banks charge each other for overnight loans. The Federal Open Market Committee sets a target range for this rate and meets eight times a year to decide whether to move it.3Federal Reserve. Meeting Calendars and Information As of its April 2026 meeting, the target range sits at 3.50% to 3.75%.
The federal funds rate itself is not a rate you’ll ever pay directly, but it moves rates you do pay. Banks use it as a reference when setting their prime rate, which anchors variable-rate consumer products like credit cards, home equity lines of credit, and adjustable-rate business loans.4Federal Reserve. What Is the Prime Rate, and Does the Federal Reserve Set the Prime Rate When the Fed raises its target, banks also tend to raise what they pay on savings accounts and certificates of deposit to pull in cash. When the target drops, those deposit rates follow.
How Treasury Yields Set the Floor for Other Rates
This is the connection that matters most for a borrower. Because Treasuries carry essentially no default risk, lenders treat the yield on a comparable-maturity Treasury as the floor. Everyone else pays more than the government, and the extra amount reflects the extra risk the lender is taking on.
Mortgage Rates Track the 10-Year Treasury
For 30-year fixed-rate mortgages, the benchmark that matters is the 10-year Treasury yield. Even though the loan runs for 30 years, most homeowners refinance or sell well before then, so the 10-year horizon is a closer match for the lender’s actual risk window. Historically, 30-year mortgage rates have run roughly one to two percentage points above the 10-year Treasury yield. With the 10-year yield near 4.5% in mid-2026, that pattern translates to mortgage offers roughly in the 5.5% to 6.5% range.
This is also the reason mortgage rates can move on days the Fed is nowhere near a decision. Treasury yields react in real time to economic data, inflation reports, and shifts in investor sentiment. A stronger-than-expected jobs report Friday morning can push the 10-year yield up and make Monday’s mortgage quotes more expensive. When you shop for a loan, federal rules under the Truth in Lending Act require lenders to show you the Annual Percentage Rate, which bundles the interest rate with mandatory fees so you can compare true cost across offers.5Consumer Financial Protection Bureau. What Is a Truth-in-Lending Disclosure for an Auto Loan
Corporate Borrowing Is Quoted as a Spread
Companies that borrow by issuing bonds have their yields quoted as a spread over the Treasury yield at a matching maturity. A corporation with a strong credit rating pays a small premium above the government’s rate. A riskier company rated below investment grade pays a much wider one. As of late March 2026, the spread on a broad index of below-investment-grade U.S. corporate bonds was about 3.21 percentage points above comparable Treasuries.6Federal Reserve Bank of St. Louis. ICE BofA US High Yield Index Option-Adjusted Spread When Treasury yields rise, corporate borrowing costs rise with them, even if the spread stays constant.
What the Yield Curve Tells You About Where Rates Are Headed
The Treasury yield curve plots yields across every maturity, from the shortest bills to the longest bonds. Its shape is one of the most-watched signals in finance.
- A normal, upward-sloping curve means short-term yields are lower than long-term yields. This is the typical shape during an economic expansion.
- A flat curve means short-term and long-term yields are roughly equal, and often shows up during transitions.
- An inverted curve means short-term yields are higher than long-term yields. An inverted yield curve has preceded every U.S. recession since 1973.7Bank for International Settlements. Yield Curve Inversion and Recession Risk
Inversions happen when investors expect the economy to weaken and future rates to fall. They buy up long-term bonds to lock in current yields, bidding up prices and pushing those long-term yields down, while the Fed may still be holding short-term rates high to fight inflation. Research from the Federal Reserve has found that the gap between the 10-year note and the three-month bill is one of the most reliable recession forecasting tools available, outperforming even the Commerce Department’s index of leading economic indicators.8Federal Reserve Bank of St. Louis. Yielding Clues About Recessions: The Yield Curve as a Forecasting Tool
One Tax Difference Worth Knowing
Interest on U.S. Treasury securities is subject to federal income tax but exempt from state and local income taxes. The exemption comes from federal law shielding U.S. government obligations from state and local taxation, with narrow exceptions for certain franchise and estate taxes.9Office of the Law Revision Counsel. United States Code Title 31 – Section 3124 A CD or corporate bond paying the same stated yield will net you less in a state with meaningful income tax. That gap matters when you’re comparing a Treasury yield head-to-head with a bank interest rate: the quoted numbers aren’t apples to apples until you adjust for taxes.