How Mortgage Rates Are Set: The Fed, the 10-Year Treasury, and Your Quote

When the Federal Reserve announces a rate decision, headlines often say mortgage rates will follow. Sometimes they do. Often they move before the announcement, barely move at all, or even go the opposite direction. That confuses a lot of homebuyers. The reason is that the Fed does not set mortgage rates directly. Mortgage rates come from bond markets, and the Fed is one influence among several. Here is how the pieces fit together.

What the Federal Reserve actually controls

The Fed's main policy tool is a target range for the federal funds rate, the rate banks charge each other for overnight loans. That rate directly affects short-term borrowing: credit cards, home equity lines of credit, many savings account yields, and the index on some adjustable-rate loans.

A 30-year fixed mortgage is a long-term loan, so its rate depends more on what investors expect over many years than on today's overnight rate. The Fed influences those expectations through its decisions, its projections, and its statements about the future, and through its holdings of Treasury and mortgage-backed securities. But markets often price in an expected Fed move weeks before it happens. By announcement day, the news may already be in mortgage rates.

The 10-year Treasury connection

Mortgage rates tend to track the yield on the 10-year U.S. Treasury note more closely than the federal funds rate. Why 10 years when the loan is 30? Because most mortgages are paid off well before 30 years through a sale or refinance, so investors treat them as roughly medium-term investments.

When the 10-year Treasury yield rises, mortgage rates usually rise too, and vice versa. Things that push the 10-year yield around include:

• Inflation data and inflation expectations
• Economic growth and employment reports
• Expectations for future Fed policy
• Government borrowing needs and demand for Treasuries from global investors
• Flight-to-safety moves during market turmoil, which can push yields down

The spread: why mortgages cost more than Treasuries

Mortgage rates sit above the 10-year Treasury yield. The gap, often called the mortgage spread, reflects several things:

• Prepayment risk. Borrowers can refinance when rates fall, which cuts off investors' income just when they would like to keep it.
• Credit and servicing costs. Someone must collect payments, manage escrow, and handle defaults.
• Market demand for mortgage-backed securities. Most U.S. mortgages are pooled into securities and sold to investors. When demand for those securities is weak, the spread tends to widen.
• Lender capacity and competition. When lenders are swamped, they may raise rates to slow applications.

Historically, the spread between the 30-year mortgage average and the 10-year Treasury has often been somewhere around 1.5 to 2 percentage points, but it has been wider at times. Because the spread moves too, mortgage rates can change even when Treasury yields are flat.

Worked example (illustrative numbers only)

These figures are hypothetical, used to show the relationship. They are not current market levels.

Suppose the 10-year Treasury yields 4.25% and the typical mortgage spread is 1.75 percentage points. A rough market-average 30-year rate would be around 6.00%.

• If inflation data surprises to the upside and the 10-year rises to 4.50% with the spread unchanged, the average mortgage rate might drift toward 6.25%.
• If the 10-year stays at 4.25% but investor demand for mortgage bonds weakens and the spread widens to 2.10 points, the average rate could rise toward 6.35%, with no change in Treasuries at all.
• If the Fed then cuts its policy rate by a quarter point as markets fully expected, mortgage rates might barely move on the day, because the cut was already priced in.

From market average to your personal quote

National averages, such as the Freddie Mac Primary Mortgage Market Survey published weekly, describe typical rates for borrowers with strong profiles. Your quote is adjusted from the lender's base pricing based on:

• Credit score. Higher scores generally get better pricing.
• Down payment or loan-to-value. More equity usually means a lower rate.
• Loan type. Conventional, FHA, VA, and jumbo loans are priced differently.
• Property type and use. Condos, multi-unit homes, and investment properties often cost more.
• Points and credits. Paying points lowers the rate; taking lender credits raises it.
• Lock period. Longer locks usually cost more.
• Lender margin. Different lenders price the same borrower differently on the same day.

That last item is why shopping matters. Getting several quotes on the same day is one of the most effective things you can do.

What you can and cannot control

You cannot control the 10-year Treasury yield, the mortgage spread, or the Fed. You can control your credit profile, your down payment, the loan type you pursue, how many lenders you compare, and when you lock once you have a contract. Trying to time the market perfectly is very difficult; focusing on the factors you control is more reliable.

FAQ

Do mortgage rates go down when the Fed cuts rates?

Not necessarily, and not always right away. Mortgage rates respond to expectations. If a cut was widely expected, rates may have already adjusted. If the Fed signals more inflation risk ahead, long-term yields and mortgage rates can even rise after a cut.

Why did my quoted rate differ from the national average?

National averages assume a specific borrower profile and may include points. Your credit, down payment, loan type, property, and lock period all shift your rate. Compare your quote to other lenders' quotes for the same scenario, not just to a headline average.

How often do mortgage rates change?

Lenders can reprice daily, and sometimes more than once a day when markets are volatile. Survey averages, such as Freddie Mac's, are published weekly and represent a snapshot.

See what a rate means for your payment

The Rateboard mortgage rates page lists survey averages with their as-of dates. Plug any rate into the mortgage payment calculator to see how a quarter-point move changes your monthly payment.

Rateboard guides are educational and are not financial advice or a forecast of future rates.