What determines your mortgage rate

Your mortgage rate is set by a combination of the federal funds rate (the baseline interest rate the Federal Reserve controls), the bond market (which prices long-term borrowing), your credit score, the loan-to-value ratio (how much you're borrowing against the home's value), and the type of loan you choose (fixed, adjustable, FHA, conventional). A lender doesn't invent your rate from scratch — they start with what the market charges for mortgages that day, then adjust it up or down based on your personal risk profile.

The market rate itself moves constantly. When the Federal Reserve raises its benchmark rate, mortgage rates typically rise within days or weeks. When bond investors demand higher yields, mortgage rates rise. When the economy slows and investors seek safety, rates often fall. Your individual rate sits somewhere on that market curve, shifted by your credit history, down payment size, and loan details.

Key Takeaways

  • The Federal Reserve's benchmark rate and the bond market set the baseline mortgage rate; your personal rate is that baseline adjusted for your credit score, down payment, and loan type.
  • A higher credit score typically lowers your rate by 0.5 to 1 percentage point or more, because lenders see you as lower risk.
  • A larger down payment (20 percent or more) usually gets you a lower rate than a smaller down payment, because you're borrowing less relative to the home's value.
  • Fixed-rate mortgages carry a higher starting rate than adjustable-rate mortgages because you're locking in certainty; the lender prices in the risk that rates might fall.
  • Mortgage rates move daily based on economic data, Federal Reserve signals, and bond market activity — not on the day you close, but on the day you lock your rate with the lender.

How the Federal Reserve influences rates

The Federal Reserve sets the federal funds rate, which is the interest rate banks charge each other for overnight loans. This is not the mortgage rate itself, but it is the anchor that everything else hangs from. When the Fed raises its rate, banks' cost of borrowing goes up, and they pass that cost along by raising mortgage rates. When the Fed cuts its rate, the opposite happens.

The Fed does not set mortgage rates directly. Instead, mortgage lenders watch Fed decisions and economic signals, then adjust their rates to stay profitable. If the Fed signals that rates will stay high for a long time, lenders raise mortgage rates immediately, even before the Fed acts. If the Fed signals a rate cut is coming, mortgage rates often fall in advance.

The lag between a Fed move and a mortgage rate change is usually a few days to a few weeks. You will not see your rate locked in on the day the Fed meets — you will see it locked in on the day you contact your lender and they quote you, which could be any day the market is open.

Why your credit score changes your rate

A credit score is a number between 300 and 850 that summarizes your history of borrowing and repaying money. Lenders use it to estimate the risk that you will default on the mortgage. A higher score means lower risk, so lenders offer a lower rate. A lower score means higher risk, so lenders charge a higher rate to compensate.

The difference is substantial. A borrower with a 740 credit score might be quoted 6.5 percent on a 30-year fixed mortgage, while a borrower with a 620 score on the same loan might be quoted 7.5 percent or higher. Over 30 years, that 1 percentage point difference adds tens of thousands of dollars to the total cost. Credit scores are calculated by Equifax, Experian, and TransUnion based on payment history, amounts owed, length of credit history, new credit, and credit mix.

You can request your credit report for free once per year from each bureau at annualcreditreport.com. If you see errors, you can dispute them. Paying down existing debt and making all payments on time will raise your score over months, not days — but even a modest improvement can lower your mortgage rate.

How down payment size affects your rate

The loan-to-value ratio (LTV) is the amount you are borrowing divided by the home's purchase price. If you buy a $300,000 home and put down $60,000 (20 percent), your LTV is 80 percent. If you put down $30,000 (10 percent), your LTV is 90 percent. Lenders charge higher rates for higher LTV ratios because they are lending more money relative to the home's value, which means less cushion if the home loses value and you default.

A 20 percent down payment is the traditional threshold where lenders stop charging a rate premium. Below 20 percent, you will typically also be required to pay mortgage insurance, which is an additional monthly cost. A 10 percent down payment might cost you 0.25 to 0.75 percentage points higher in rate, plus mortgage insurance. A 5 percent down payment might cost you 0.5 to 1 percentage point higher in rate, plus mortgage insurance.

Saving for a larger down payment before you buy will lower both your rate and your monthly payment. However, the math is not always in your favor — if mortgage rates are very low and your savings are earning nothing, buying sooner with a smaller down payment might cost less overall than waiting to save more.

Fixed-rate versus adjustable-rate mortgages

A fixed-rate mortgage locks your interest rate for the entire loan term (usually 15, 20, or 30 years). Your monthly payment never changes. A adjustable-rate mortgage (ARM) has a fixed rate for an initial period (often 3, 5, 7, or 10 years), then adjusts annually or semi-annually based on a market index plus a lender margin.

Fixed-rate mortgages carry a higher starting rate than ARMs because you are paying the lender for certainty. The lender is locked into your rate even if market rates rise sharply, so they price in that risk upfront. An ARM starts lower because the lender's risk is limited to the initial fixed period. After that period ends, your rate can rise substantially if market rates have climbed.

ARMs are riskier for borrowers because your payment can jump when the rate adjusts. If you plan to sell or refinance before the adjustment period ends, an ARM can save you money. If you plan to stay in the home for 15 or 30 years, a fixed rate protects you from payment shock. Most borrowers choose fixed-rate mortgages for this reason.

Loan type and program requirements

Different loan programs carry different rates. A conventional mortgage (not backed by a government agency) typically requires a 620 credit score minimum and a 3 to 5 percent down payment. An FHA loan (backed by the Federal Housing Administration) allows a 580 credit score and a 3.5 percent down payment, but requires mortgage insurance for the life of the loan. A VA loan (for military members and veterans) often requires no down payment and no mortgage insurance, but is only available to those who meet VA service requirements.

Each program has its own rate curve. FHA loans often carry a slightly higher rate than conventional loans because the government is absorbing some of the lender's risk. VA loans often carry a lower rate because the VA may provide reduces lender risk. USDA loans (for rural properties) have their own rate structure. Your loan program choice affects your rate, so comparing programs matters if you are may be able to access for more than one.

When rates are locked and how they change

Your mortgage rate is not locked until you sign a rate lock agreement with your lender. Before that, the rate the lender quotes you is an estimate based on current market conditions. Once you lock, the lender commits to that rate for a set number of days (usually 30, 45, or 60 days) while your loan is being processed and underwritten.

If market rates fall during your lock period, you are protected — your rate stays the same. If market rates rise, your rate stays the same. If your lock period expires before closing and rates have risen, you can ask to extend the lock (usually for a fee) or accept a new rate. Some lenders offer a "float-down" option, which lets you lock in a lower rate if the market falls before closing, but this costs extra.

The day you lock is the day that matters for your rate, not the day you close. If you lock on a Monday and close on a Friday, your rate is based on Monday's market conditions. This is why timing matters — if you expect rates to rise, locking early protects you. If you expect rates to fall, waiting to lock might save you money, but you risk rates rising instead.

Frequently Asked Questions

Do all lenders offer the same mortgage rate?

No. The market baseline is the same for all lenders on a given day, but each lender adjusts it based on their own costs, profit margins, and risk appetite. One lender might quote 6.5 percent while another quotes 6.75 percent on the same loan. Shopping multiple lenders can save you 0.25 to 0.5 percentage points, which adds up to thousands of dollars over the loan term.

Can I negotiate my mortgage rate?

You cannot negotiate the market rate itself, but you can negotiate the lender's margin above it. You can also ask about discounts for bundling products (mortgage plus checking account, for example), paying points upfront to lower your rate, or switching to a different loan program. Some lenders are more flexible than others, so shopping is your best leverage.

What happens to my rate if I refinance?

When you refinance, you are taking out a new loan at the current market rate. Your old rate disappears. If market rates have fallen since you locked your original mortgage, refinancing at a lower rate can save you money — but only if the closing costs are low enough that you recoup them before you sell or refinance again.

Why do mortgage rates change daily?

Mortgage rates follow bond market yields, which move constantly based on economic data (jobs reports, inflation, consumer spending), Federal Reserve signals, and investor demand. When investors expect inflation to rise, they demand higher yields, and mortgage rates rise. When they expect a recession, they seek safety in bonds, and rates fall. These shifts happen in minutes during market hours.

Does paying points lower my rate?

Yes. A point is 1 percent of your loan amount. Paying one point upfront (for example, $3,000 on a $300,000 loan) typically lowers your rate by 0.25 to 0.5 percentage points for the life of the loan. Points make sense if you plan to stay in the home long enough to recoup the upfront cost through lower monthly payments. If you plan to sell or refinance within a few years, points usually do not pay off.