Your credit score is one of the single biggest factors lenders use to price a refinance, often rivaling loan-to-value ratio in how much it can move your quoted interest rate. Understanding how credit scoring tiers generally affect refinance pricing can help you decide whether it's worth improving your score before applying, and can set realistic expectations for the rate you're likely to be offered.
Why Credit Score Matters So Much in Refinance Pricing
Lenders use your credit score as a shorthand for the statistical likelihood that you'll repay the loan as agreed. Most conventional loans are priced using risk-based pricing models that adjust the interest rate — or the upfront fees required to reach a given rate — based on a combination of credit score and loan-to-value ratio. Generally speaking, higher scores correspond to lower rates and lower scores correspond to higher rates, but the relationship isn't perfectly linear: crossing certain score thresholds (commonly around ranges like 620, 660, 700, 740, and 760) can produce a noticeably bigger rate change than moving the same number of points within a tier.
How Credit Tiers Commonly Affect Pricing
While exact figures vary by lender, loan program, and market conditions, the general pattern across most conventional refinance pricing looks like this:
- Excellent credit (typically 760+) generally qualifies for the most competitive rates a lender offers, along with the lowest or no risk-based pricing adjustments.
- Very good credit (roughly 700–759) usually still qualifies for competitive rates, though often with a small pricing adjustment compared to the top tier.
- Good credit (roughly 660–699) commonly sees a more noticeable rate increase, and may face additional scrutiny on other underwriting factors.
- Fair credit (roughly 620–659) often faces meaningfully higher rates and, on some loan programs, may be near or at the minimum score threshold required to qualify at all.
- Below approximately 620 may not qualify for many conventional refinance programs at all, though government-backed options like FHA may have more flexible minimums.
Government-backed refinance programs — FHA, VA, and USDA — generally use different pricing structures and may be more flexible on credit score minimums than conventional loans, though they carry their own program-specific fees, such as FHA mortgage insurance. Because these programs are administered by federal agencies with their own eligibility rules, confirming current credit requirements with a HUD-approved counselor, the VA, USDA, or a participating lender is worthwhile before assuming a specific score will or won't qualify.
How This Interacts With Loan-to-Value
Credit score and LTV work together in most pricing models, not independently. A borrower with an excellent credit score but a high LTV (meaning less equity in the home) may still receive a less favorable rate than someone with slightly lower credit but substantially more equity. This is one reason a cash-in refinance — paying down principal specifically to lower LTV — can sometimes offset a less-than-ideal credit tier. Understanding how to calculate your home equity is a useful first step in estimating where you fall on the LTV spectrum.
Should You Improve Your Credit Before Refinancing?
If your score is close to a pricing threshold — for example, just a few points below 740 — it may be worth taking a few months to improve it before locking in a refinance rate. Common ways to raise a credit score before refinancing include paying down revolving credit card balances, correcting errors on your credit report, avoiding new credit inquiries or accounts, and ensuring all payments are made on time in the months leading up to application. Because credit scoring models can take time to reflect these changes, starting this process well before you plan to apply gives the improvements more time to register.
That said, if rates are moving in a way that makes waiting costly, or if your existing rate is significantly above current market rates, it may make more sense to refinance now at your current score and consider a second refinance later if your credit — or the broader rate environment — improves. A refinance break-even calculator can help you weigh the cost of waiting against the cost of refinancing sooner at a higher rate.
Other Factors That Combine With Credit Score
Credit score is significant, but it's evaluated alongside other factors in the underwriting process, including your debt-to-income ratio, employment history, and the type of property being refinanced. Two borrowers with identical credit scores can still receive different rate offers based on these other variables, which is one reason it's worth comparing quotes from multiple lenders rather than assuming a single quoted rate reflects the best available offer for your credit profile. For a broader look at refinance timing and strategy, see when to refinance your mortgage and use a mortgage payment calculator to model how different rate scenarios affect your monthly payment.