How Your Credit Score Affects Your Mortgage Rate (And What You Can Do)

What Is a Credit Score?

A credit score is a three-digit number that lenders use to predict how likely you are to repay a loan. It is based on the information in your credit reports, including your payment history, how much you owe, and the length of your credit history. Mortgage lenders use credit scores as one of the key factors when setting the interest rate they offer you.

The Consumer Financial Protection Bureau (CFPB) explains that lenders use credit scores to assess how reliable a borrower will be in paying back a loan. Generally, a higher credit score signals to lenders that you’re a safer bet, which can lead to a lower interest rate. Conversely, a lower score can result in a higher rate, because lenders see more risk in lending to you.

• Credit scores typically range from 300 to 850.
• Most mortgage lenders use FICO scores, though other scoring models exist.
• Your score is one of several factors considered, but it can be one of the most influential.

Sources: Consumer Financial Protection Bureau

Typical Rate Ranges by Credit Score Band

Data from early 2026 shows a similar pattern. LendingTree reported average APRs for 30-year fixed conventional loans of 6.06% for scores 760+, 6.12% for 720-759, 6.32% for 680-719, 6.58% for 640-679, and 6.86% for 600-639. Experian’s data from August 2026 shows average APRs ranging from 6.73% for scores 780+ to 7.46% for a score of 620. These figures are snapshots from different time periods and loan amounts, but they illustrate the general trend: lower credit scores mean higher rates.

• The exact rate you’ll be offered depends on your location, down payment, loan term, and other factors.

Sources: Consumer Financial Protection Bureau, LendingTree, Experian

How Lenders Use Credit Scores

Lenders use credit scores as part of their risk assessment and to set the interest rate. The CFPB notes that higher credit scores generally lead to lower interest rates. For conforming loans—loans that meet Fannie Mae and Freddie Mac guidelines—lenders also apply Loan-Level Price Adjustments (LLPAs). These adjustments increase as credit scores decrease and as loan-to-value ratios increase, meaning a lower credit score can result in higher upfront costs or a higher interest rate.

Conventional loans typically require a minimum credit score of 620, while FHA loans allow scores as low as 580 with a 3.5% down payment. Jumbo loans, which exceed conforming loan limits, usually require a score of at least 700. These minimums are widely cited across multiple sources, and they affect your ability to qualify for certain loan types.

• LLPAs are risk-based price adjustments that can raise your rate or require you to pay discount points.
• A higher credit score not only gives you access to better rates but also to a wider range of loan programs.

Sources: Consumer Financial Protection Bureau, Sammamish Mortgage, ConsumerAffairs, Experian

Other Factors That Interact with Credit

While your credit score is a major factor, it doesn’t work alone. Lenders also consider your down payment, loan amount, loan term, and the type of property. The CFPB’s research shows that rate offers vary widely even for the same credit score, because other factors like discount points and rate lock periods can change the offer.

For example, the CFPB’s rate ranges for a 700 credit score (5.875% to 8.125%) reflect a range of loan offers that include different combinations of points and fees. Your location and the current market also play a role. So while your credit score is significant, it’s never the only thing that determines your rate.

• Your down payment affects your loan-to-value ratio, which can trigger LLPAs.
• Choosing to pay discount points can lower your rate, but it increases your upfront costs.
• The length of your rate lock (e.g., 30, 45, or 60 days) can also influence the rate.

Sources: Consumer Financial Protection Bureau

Ways to Improve Your Score Before Applying

If you’re planning to apply for a mortgage, taking steps to improve your credit score can pay off. The CFPB recommends checking your credit reports for errors and disputing any inaccuracies, since mistakes can lower your score and prevent you from qualifying for better rates. You can get free copies of your credit reports from the three major credit bureaus every 12 months.

ConsumerAffairs suggests paying down credit card balances to below 30% of your credit limit (the utilization ratio) and addressing any overdue accounts. Improving your credit score can happen in as little as 30 days if you focus on high-impact actions like lowering utilization and making all payments on time.

• Review your credit reports for errors and dispute any mistakes.
• Pay down revolving balances to reduce your credit utilization.
• Make all payments on time—payment history is a major factor.
• Avoid opening new credit accounts right before applying for a mortgage.

Sources: Consumer Financial Protection Bureau, ConsumerAffairs

When Not to Wait for a Better Score

Improving your credit score can be worthwhile, but it’s not always the right move to delay your home purchase. If your credit score is already in a range that qualifies you for a loan, waiting for a higher score might cost you more in the long run if mortgage rates rise in the meantime.

Consider how long it will take to meaningfully raise your score. In some cases, simple changes like paying down a credit card can improve your score in 30 days, but more significant improvements can take months. If you’re already approved for a loan and the rate is favorable, it may be better to proceed now and refinance later if rates drop.

Ultimately, the decision depends on your personal situation, your financial goals, and the current rate environment. It’s important to weigh the potential savings from a lower rate against the risk of waiting for rates to change.