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How the 10-Year Treasury Affects Mortgage Rates

By Wirly Editorial Team | Updated March 30, 2026 | AI-assisted, human-reviewed

How the 10-Year Treasury Affects Mortgage Rates: What Refinance Borrowers Need to Know

If you are shopping for a refinance or watching mortgage rates, the 10-year Treasury yield is the single most important benchmark to follow. While the Federal Reserve’s funds rate gets most of the headlines, the 10-year Treasury yield is what actually drives the interest rate on your 30-year mortgage on a day-to-day basis. When treasury yields rise, mortgage rates almost always follow. When they fall, mortgage rates typically decline too.

The connection is not perfect or instant, but it is remarkably consistent over decades. According to Federal Reserve Economic Data (FRED), the spread between the 10-year Treasury yield and the average 30-year fixed mortgage rate has historically ranged from about 1.5 to 2.0 percentage points. Understanding this relationship can help you time a refinance decision and recognize when rates are relatively favorable or unfavorable.

Disclaimer: This article is educational content only and does not constitute financial advice. Rates change daily, and your individual mortgage rate will depend on your credit profile, loan type, and lender. Always consult with a qualified financial professional before making refinancing decisions.

What Is a Treasury Bond and Treasury Yield?

A Treasury bond (or Treasury note, in the case of the 10-year) is a debt security issued by the U.S. government. When you buy a Treasury note, you are essentially lending money to the federal government. In return, the government pays you interest at a fixed rate until the note matures.

The 10-year Treasury yield is the annual return an investor earns by holding a 10-year Treasury note. It is expressed as a percentage. For example, if the 10-year Treasury yield is 4.25%, an investor who buys $10,000 worth of 10-year notes will earn roughly $425 per year in interest.

Treasury yields are set by the bond market, not by the government or the Federal Reserve directly. They fluctuate constantly throughout each trading day based on supply and demand from investors worldwide.

Yields and Prices: How They Work Together

Treasury bond prices and treasury yields move in opposite directions. When demand for Treasury bonds increases (meaning more investors want to buy them), the price goes up and the yield goes down. When demand drops, the price falls and the yield rises.

This inverse relationship matters because it reflects investor sentiment about the economy. During periods of uncertainty, investors tend to flock to the safety of U.S. Treasuries, pushing yields down. During periods of strong economic growth or rising inflation, investors may sell Treasuries in favor of higher-returning assets, pushing yields up.

How the 10-Year Treasury Affects Mortgage Rates

The link between 10-year treasuries and mortgage rates comes down to how lenders fund the loans they make. Most 30-year mortgage loans are packaged into mortgage-backed securities (MBS) and sold to investors on the secondary market. These mortgage-backed securities compete directly with Treasury bonds for investor dollars.

Because Treasury bonds are backed by the U.S. government and carry virtually no default risk, they set a floor for what investors expect to earn. Mortgage-backed securities carry more risk – borrowers can default, prepay early, or refinance – so investors demand a higher interest rate to compensate. This premium above the 10-year Treasury yield is called the “mortgage spread.”

When the 10-year treasury yield rises, investors demand a proportionally higher return on mortgage-backed securities as well. Lenders, in turn, must charge borrowers a higher interest rate. This is why your mortgage rate tends to track the 10-year Treasury yield rather than the Federal Reserve’s funds rate.

What Is the Mortgage Spread?

The mortgage spread is the gap between the average 30-year fixed mortgage rate and the 10-year Treasury yield. According to FRED data, this spread has historically averaged around 1.7 percentage points. So if the 10-year Treasury yield is 4.00%, you would typically expect the average 30-year mortgage rate to be around 5.70%.

However, the spread is not constant. It widens during periods of economic stress and narrows when conditions are calm. In 2024, the spread remained elevated compared to historical norms, according to Freddie Mac’s Primary Mortgage Market Survey data. A wider-than-normal spread can signal that lenders are pricing in additional risk or that the mortgage-backed securities market is experiencing disruption.

Factors That Affect the Spread

  • Prepayment risk: When rates drop, many borrowers refinance, paying off their loans early. This forces investors to reinvest at lower rates, so they demand a wider spread to compensate.
  • Default risk: During economic downturns, the risk that borrowers will miss payments increases, widening the spread.
  • Market liquidity: If fewer investors are buying mortgage-backed securities, lenders must offer higher rates to attract buyers.
  • Federal Reserve policy: When the Fed was actively purchasing mortgage-backed securities (as it did from 2020 through 2022), the spread narrowed significantly. As the Fed reduced its MBS holdings, the spread widened.
  • Inflation expectations: Rising inflation erodes the value of fixed-income investments, causing investors to demand higher yields on both Treasuries and mortgage-backed securities.

The 10-Year Treasury vs. the Federal Funds Rate

Many people assume the Federal Reserve directly controls mortgage rates. That is a common misconception. The Fed sets the federal funds rate, which is the overnight lending rate between banks. This short-term rate most directly affects adjustable-rate mortgages, credit cards, home equity lines of credit, and auto loans.

The 10-year Treasury yield, on the other hand, is a long-term rate determined by the bond market. It reflects investor expectations about future inflation, economic growth, and Fed policy over the next decade. While the funds rate and the 10-year Treasury yield are related, they can and often do move in different directions.

For example, the Fed could cut the funds rate, but if investors expect inflation to remain elevated, the 10-year Treasury yield could actually rise – and mortgage rates along with it. This disconnect has surprised many borrowers, particularly in late 2024 when rate cuts by the Fed did not produce the mortgage rate declines many expected.

What This Means for You

If you are considering a refinance, here is how to put this information to work:

  • Watch the 10-year Treasury yield, not just the funds rate. You can track it daily on the FRED website. When the 10-year yield drops, mortgage rates typically follow within days.
  • Calculate the current spread. Compare the 10-year Treasury yield to the average 30-year mortgage rate reported in Freddie Mac’s weekly Primary Mortgage Market Survey. If the spread is wider than the historical average of roughly 1.7 points, rates may have room to improve even without a drop in Treasury yields.
  • Use Wirly’s tools to compare scenarios. Our refinance calculator can help you estimate how different rate scenarios would affect your monthly payment and total interest costs.
  • Rates change daily. The mortgage rate you see quoted today may be different tomorrow. According to the Consumer Financial Protection Bureau, shopping around and comparing offers from multiple lenders can save you thousands of dollars over the life of your loan.

According to the CFPB, even saving a fraction of a percent on your interest rate can translate to significant savings over time. They recommend getting quotes from at least three lenders and comparing Loan Estimates side by side before committing.

Risks and Considerations

Even if treasury rates drop and mortgage rates improve, refinancing does not always make financial sense. Here are critical factors to consider:

  • Break-even period: Refinancing involves closing costs, which typically range from 2% to 5% of the loan amount. Divide your total closing costs by your monthly savings to find your break-even point. If you plan to move before reaching that point, refinancing may cost you money.
  • Resetting your amortization clock: If you are 10 years into a 30-year mortgage and refinance into a new 30-year loan, you restart the clock. You will pay more total interest over the life of the loan even if your rate is lower. Consider a shorter-term loan to avoid this trap.
  • Hidden costs: Appraisal fees, title insurance, origination fees, and recording fees can add up quickly. Some lenders offer “no-closing-cost” refinances but build those costs into a higher interest rate.
  • Prepayment penalties: Some existing loans include penalties for paying off the loan early. Check your current mortgage documents before starting a refinance application.
  • Credit score impact: Multiple loan applications generate hard inquiries on your credit report. However, credit scoring models typically treat multiple mortgage inquiries within a 14- to 45-day window as a single inquiry, so try to consolidate your rate shopping into a short timeframe.
  • Rate lock risks: When you lock a rate, it is only guaranteed for a specific period (usually 30 to 60 days). If your closing is delayed, the lock may expire, and you could face a higher rate. Ask your lender about float-down options that allow you to take advantage of rate decreases after locking.

According to CFPB complaint data from 2024, trouble during the payment process was the most common mortgage-related complaint across major servicers, with thousands of complaints filed. When refinancing, make sure you understand the transition process between your old servicer and your new one to avoid payment issues.

The Bottom Line

Yes, mortgage rates are closely tied to the 10-year Treasury yield. This relationship exists because mortgage-backed securities and Treasury bonds compete for the same investor dollars. When treasury yields rise, investors demand more from mortgage-backed securities, and your mortgage rate goes up. When yields fall, rates tend to follow.

However, the relationship is not one-to-one. The mortgage spread can widen or narrow based on economic conditions, Federal Reserve policy, inflation expectations, and risk sentiment. Tracking both the 10-year Treasury yield and the current spread gives you the most complete picture of where mortgage rates are heading.

Remember that rates change daily. The data and analysis in this article reflect general trends and historical relationships. Always check current rates, compare offers from multiple lenders, and use tools like Wirly’s refinance calculator to evaluate whether refinancing makes sense for your specific situation.

Published by the Wirly Editorial Team. This article was drafted using AI writing tools and reviewed for accuracy by our editorial team. All data claims have been verified against the sources listed below.

Sources

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Written by the Wirly Editorial Team. Last reviewed: March 30, 2026. Fact-checked against FRED 10-Year Treasury data, Freddie Mac PMMS, CFPB consumer guidance, CFPB 2024 complaint data. See our methodology for how we evaluate lenders.

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This guide is for educational purposes only. Consult a licensed mortgage professional for personalized advice. Wirly is not a lender or mortgage broker.