Mortgage Rates and the 10-Year Treasury Yield: How They Connect
Mortgage rates tend to rise and fall with the 10-year Treasury yield, not with the Federal Reserve's short-term rate. This guide explains why, what the gap between the two represents, why the link is not perfect, and how to read rate headlines without confusing the pieces.
When mortgage rates jump or drop, the headlines often point at the Federal Reserve. But the more reliable guide to where a 30-year fixed mortgage rate is heading is a different number: the yield on the 10-year U.S. Treasury note. Understanding why they move together, and why they sometimes do not, makes rate news far easier to interpret.
Mortgage rates are priced off long-term bonds
A 30-year fixed-rate mortgage is a long-term loan. Behind most of them is a chain of investors. A lender makes the loan, then it is usually pooled with others and sold as a mortgage-backed security (MBS), a bond whose payments come from homeowners' monthly mortgage payments. Investors compare the yield on those securities with safer alternatives, above all U.S. Treasuries.
That comparison is why mortgage rates follow Treasury yields. If investors can earn more on a Treasury, they demand more from mortgages, and lenders raise the rate they charge. If Treasury yields fall, mortgage rates tend to follow.
The 10-year Treasury note is the usual benchmark, even for 30-year loans. The reason is that most mortgages do not last 30 years. People sell, move or refinance, so the average life of a mortgage is much shorter than its stated term. A 10-year yield is therefore a closer match to the typical investor's holding period. For background on the securities themselves, see how US Treasuries work.
The spread: why mortgages cost more than Treasuries
Mortgage rates are almost always higher than the 10-year yield. The difference is the mortgage spread. It exists because a mortgage is a riskier and more expensive product than a Treasury:
- Credit risk. Treasuries are backed by the federal government. A mortgage borrower could default. Many US mortgages are guaranteed by government-backed entities, which reduces that risk for investors, but it does not remove all costs.
- Prepayment risk. Borrowers can repay early, typically when rates fall and they refinance. That is bad for investors, who get their money back just when yields are lower. Investors demand extra compensation for this uncertainty.
- Servicing and fees. Someone has to collect payments, manage escrow and handle problem loans. Lenders also need to cover their costs and earn a profit.
- Liquidity and demand. The spread can widen when investors are nervous or when there are fewer buyers of mortgage-backed securities, and narrow when demand is strong.
This spread is not fixed. It changes with market conditions and investor appetite, which is one reason the link between mortgage rates and the 10-year yield is close but not exact. When you read a rate report, think of the mortgage rate as roughly "Treasury yield plus spread."
What the Fed does and does not do
The Federal Reserve sets a short-term policy rate (the federal funds rate target), which influences borrowing costs on credit cards, car loans, savings accounts and adjustable-rate debt. It does not directly set 30-year mortgage rates. The Fed's role is explained in more detail in what the Federal Reserve actually does, one of our earlier explainers.
The Fed still matters for mortgages in indirect ways:
- Expectations. Long-term yields reflect where investors think short-term rates will average over many years. A Fed signal that rates will stay high for longer can push long-term yields up. A signal of cuts can push them down.
- Inflation outlook. Investors want a return above expected inflation. Fed actions that change the inflation outlook affect long-term yields.
- Balance sheet. The Fed has at times bought or sold mortgage-backed securities and Treasuries, which can affect demand and spreads. This is covered in the Fed's balance sheet explained.
Because of these channels, mortgage rates can move on the day of a Fed meeting, but they can also move on a jobs report, an inflation reading or a Treasury auction. They can even move in the opposite direction to the policy rate, if long-term expectations shift.
Why the relationship is not perfect
If you plot the 10-year yield and average mortgage rates over many years, the lines move together, but not in lockstep. Here are the common reasons for gaps:
| Factor | Effect on the spread |
|---|---|
| Market volatility | Spread tends to widen when investors are uncertain about rates |
| Expected refinancing | When many borrowers are likely to refinance, prepayment risk rises |
| Investor demand for MBS | Strong demand narrows the spread; weak demand widens it |
| Lender capacity and costs | When lenders are swamped with applications, they may price higher |
| Timing | Published mortgage averages are often weekly and lag daily Treasury moves |
That last point matters when comparing sources. The 10-year yield changes every trading day, while a survey-based average mortgage rate may be published weekly. A quote you receive from a lender can also differ from either number, because it depends on your credit score, down payment, loan type, points paid and the lock period.
Reading rate headlines with this in mind
A few rules of thumb help you cut through the noise:
- Look at the 10-year yield first. If it jumped sharply, expect mortgage rates to rise within days. If it fell, expect relief.
- Do not assume a Fed cut means lower mortgage rates. If markets already expected the cut, long-term yields may not move, or may even rise if the Fed signals caution about inflation.
- Remember it is an average. Your personal rate depends on your credit profile, the loan size, the property and the lender.
- Beware of forecasts. Nobody can reliably predict the 10-year yield. Treat outlooks as scenarios: if inflation cools and growth slows, yields may drift lower; if inflation proves sticky or government borrowing weighs on bond demand, yields may stay elevated.
What it means for borrowers and savers
For someone shopping for a mortgage, the practical takeaways are straightforward:
- Compare official loan estimates. Lenders must provide a standardized Loan Estimate, which makes it easier to compare rates, fees and points across offers. The Consumer Financial Protection Bureau explains how to read it.
- Understand rate locks. A lock holds your rate for a set period, protecting you if yields rise while you close. Ask what it costs and what happens if you need an extension.
- Think about refinancing as a spread plus yield question. If the 10-year yield falls, rates may drop enough to make refinancing worthwhile, but closing costs and how long you plan to stay still matter.
For investors, the same link explains why bond prices and mortgage rates move inversely. When yields rise, existing bonds fall in value, a relationship covered in our explainer on why bond prices fall when rates rise.
The takeaway is simple: mortgage rates are a long-term bond story. Follow the 10-year Treasury yield for the direction, remember the spread for the gap, and treat the Fed as one influence among several rather than the switch that sets your rate.
Frequently asked questions
Does the Federal Reserve set mortgage rates?
No. The Fed sets a short-term policy rate, and that influences borrowing costs across the economy, but 30-year mortgage rates are set by lenders and priced off long-term bond markets. The Fed's decisions and its signals about future policy can move those markets, which is why mortgage rates sometimes shift around Fed meetings, but the link is indirect.
Why is a 30-year mortgage rate higher than the 10-year Treasury yield?
A mortgage carries more risk and cost than a Treasury security. Borrowers can default or refinance early, lenders and servicers need to be paid, and investors who buy mortgage-backed securities demand extra yield for these risks. The difference between the two is called the mortgage spread.
Can mortgage rates fall even if the Fed raises rates?
Yes. Long-term yields respond to expectations about inflation, growth and future Fed policy, not only to the current policy rate. If investors expect slower growth or lower inflation, long-term yields and mortgage rates can fall even while the Fed is raising short-term rates.
