How Your Credit Score Affects Mortgage Rates — And What It Costs You

Most mortgage lenders use FICO scores (specifically FICO 2, 4, and 5 from the three credit bureaus). They pull all three, then use the middle score. If you're applying with a co-borrower, they use the lower of the two middle scores.

• 760+: Excellent. You'll qualify for the absolute best rates available. This is the top tier for virtually every lender.
• 740–759: Very good. Rates are nearly identical to 760+ at most lenders — maybe 0.125% higher.
• 720–739: Good. You might see rates 0.125–0.25% above the best tier.
• 700–719: Slightly above average. Expect rates 0.25–0.5% above the best available.
• 680–699: Average. This is where rates start to noticeably increase — 0.5–0.75% above top tier.
• 660–679: Below average. Rates can be 0.75–1.25% higher. Some conventional lenders start adding restrictions.
• 620–659: Minimum for conventional loans. Rates are 1.0–1.75% above top tier, and you'll likely need a larger down payment or pay PMI at higher premiums.
• Below 620: Conventional loans become very difficult. FHA loans (minimum 580 with 3.5% down) or VA loans (no minimum, but most lenders want 620+) are your best options.

Let's put real dollars to these score ranges. These are representative rates for a 30-year fixed conventional mortgage (your actual rate will vary by lender, location, and market conditions):

The gap between a 760 score and a 660 score is $249/month — nearly $90,000 over the life of the loan. And between 760 and 620? That's $353/month or $127,000 more in total interest. These aren't hypothetical numbers; they're the real cost of a low credit score.

Let's say you're sitting at 690 and you manage to push your score to 740 before applying for a mortgage. On a $300,000 loan, that could drop your rate from roughly 6.75% to 6.25%.

• Monthly savings: $99/month ($1,946 vs $1,847)
• Annual savings: $1,188
• Total savings over 30 years: $35,612
• Time investment to improve score: typically 2–6 months of focused effort

The savings scale with loan size. On a $500,000 mortgage, that same 50-point improvement saves about $59,000 in total interest.

You don't need years to make a meaningful difference. Here are the highest-impact moves, ranked by how quickly they typically work:

• Pay down credit card balances (1–2 months). Credit utilization — how much of your available credit you're using — is 30% of your FICO score. Dropping from 60% utilization to under 10% can boost your score by 50–80 points in a single billing cycle. Ideal target: under 7% on each card.
• Dispute errors on your credit report (30–45 days). About 1 in 5 consumers has an error on at least one credit report. Pull all three reports at annualcreditreport.com and dispute anything inaccurate — late payments that were actually on time, accounts that aren't yours, wrong balances.
• Become an authorized user on a family member's old card with perfect history (1–2 months). Their account history gets added to your report. Make sure the card has a low utilization, long history, and zero late payments.
• Don't open new accounts or close old ones (immediate). Each new application triggers a hard inquiry (-5 to -10 points) and lowers your average account age. Closing old cards reduces available credit, spiking your utilization ratio.
• Set up autopay on everything (ongoing). A single 30-day late payment can drop your score by 60–100 points and stays on your report for 7 years. Payment history is 35% of your FICO score — it's the single most important factor.

Different mortgage programs have different minimum score requirements. Here's what you need to know:

• Conventional (Fannie Mae/Freddie Mac): Minimum 620. Best rates at 740+. Requires PMI if down payment is under 20%.
• FHA: Minimum 580 with 3.5% down, or 500–579 with 10% down. More forgiving of lower scores but requires mortgage insurance for the life of the loan (unless you put 10%+ down, in which case MIP drops off after 11 years).
• VA (veterans): No official minimum, but most lenders require 620+. No PMI, no down payment required. Often the best deal for eligible borrowers at any credit score.
• USDA: Minimum 640 for automatic underwriting. Available in eligible rural/suburban areas with income limits. No down payment required.
• Jumbo (above conforming limits): Typically require 700+ and sometimes 720+. Lenders are more conservative because these loans can't be sold to Fannie/Freddie.