Most buyers know credit scores matter for mortgages, but few understand exactly how much — or what they can do about it. This guide breaks down the scoring model lenders use, the score thresholds that unlock better rates, and the fastest legitimate ways to improve your number.
580
Minimum score (FHA)
740+
Best conventional pricing
Payment history (35%)
Biggest score factor
Pay down revolving balances
Fastest improvement lever
How lenders use your credit score
Mortgage lenders pull a tri-merge report — one score from each of the three bureaus (Equifax, Experian, TransUnion) — and use the middle score for qualification. If you're applying jointly, they use the lower of the two middle scores. The score determines your interest rate tier: even a 20-point difference can shift your rate by 0.25% or more, which adds up to thousands of dollars over the life of a loan.
Score thresholds that matter
For conventional loans, 740+ typically gets you the best pricing. FHA loans allow scores as low as 580 with 3.5% down (or 500 with 10% down). VA loans have no official minimum, but most lenders require 620+. Jumbo loans usually require 700–720+. Knowing your target score before you apply helps you decide whether to wait and improve or move forward now.
The five factors in your score
Payment history (35%) is the biggest factor — even one 30-day late payment can drop your score 50–100 points. Credit utilization (30%) measures how much of your available revolving credit you're using; keep each card below 30% and ideally below 10%. Length of credit history (15%) rewards older accounts, so don't close cards you've had for years. Credit mix (10%) benefits from having both revolving and installment accounts. New inquiries (10%) have a small, temporary impact — multiple mortgage inquiries within a 45-day window count as one.
Fast ways to improve your score
Pay down revolving balances — this is the fastest lever. If you can get utilization below 10% on each card, you may see a 20–40 point gain within one billing cycle. Dispute errors on your credit report; roughly 1 in 5 reports has a material error. Ask for a goodwill deletion on a single late payment if you have an otherwise clean history. Become an authorized user on a family member's old, low-utilization card. Avoid opening new accounts or closing old ones in the 6 months before you apply.
What NOT to do before applying
Don't open new credit cards or auto loans — new accounts lower your average account age and add hard inquiries. Don't close old credit cards — this raises your utilization ratio and shortens your credit history. Don't co-sign for anyone else's loan. Don't make large cash deposits without a paper trail — lenders will ask for documentation. Don't change jobs right before applying if you can avoid it, especially from salaried to self-employed.
Working with a broker to optimize your rate
An independent mortgage broker like Diversified Lending can run a soft-pull credit analysis before you formally apply, show you exactly which score tier you're in, and advise on whether a 30–60 day improvement window is worth the wait. We shop your file across multiple wholesale lenders to find the best rate for your actual score — not just the rate advertised for perfect-credit borrowers.
Want to know where your score stands?
Jerry and Lisa can run a soft-pull credit analysis with no impact to your score — and show you exactly what rate tier you qualify for today.