What credit score do you need for a mortgage?
Why there is no single number, and where an improvement is actually worth money.
On this page
- Bands, not thresholds
- Why the rate matters more than it sounds
- The score is not the only gate
- What to do in the six months before applying
- Which score the lender actually pulls
- The whole picture, not just the score
- Getting pre-approved, and what it is not
- Where an improvement is worth the wait
- Frequently asked questions
There is no single qualifying number, and anyone quoting one is describing a particular lender and loan program rather than a rule. What is consistent is the shape of the effect: your score changes your pricing more than your approval, and the difference is largest in the middle of the range.
Bands, not thresholds
Lenders price in tiers. Moving within a tier changes little; crossing into a better one changes the rate you are offered. Using the common FICO descriptions (see what moves the score):
| Band | Description | What it usually means for a mortgage |
|---|---|---|
| 800+ | Exceptional | Best pricing. Further points change essentially nothing |
| 740 to 799 | Very good | Qualifies for most best-rate tiers |
| 670 to 739 | Good | Approved widely, but not at the headline rate |
| 580 to 669 | Fair | Options narrow, pricing worsens noticeably |
| Below 580 | Poor | Limited to specific programs, if any |
The practical implication: going from 690 to 740 can be worth a real rate improvement. Going from 800 to 820 is worth almost nothing. Effort pays in the middle.
Why the rate matters more than it sounds
A mortgage runs for decades, so a small rate difference compounds into a large sum. On a $300,000 loan over 30 years, even a half-point difference changes the monthly payment and the lifetime interest substantially. Run your own figures through the payment calculator rather than trusting a rule of thumb.
The score is not the only gate
Three things are assessed together, and a strong score does not rescue a weak one of the others:
- Debt-to-income ratio. Often the binding constraint. See how DTI is calculated.
- Down payment. Affects both approval and pricing, and whether mortgage insurance applies.
- Documented, stable income. Verifiable income matters more than a high number on a payslip.
What to do in the six months before applying
- Stop opening accounts. New credit and inquiries both weigh against you at exactly the wrong moment.
- Get reported balances down. Utilization is the fastest-moving factor and can shift a score within one statement cycle.
- Pull all three reports and fix errors. A wrongly reported late payment can cost a pricing tier. Start at the official free source.
- Do not close old cards. It raises utilization and shortens average account age.
- Rate shop inside a tight window once you are ready, so multiple applications count as one.
Between approval and closing, change nothing. Lenders commonly re-check credit before completion, and a new car loan at that point can undo the approval entirely.
Which score the lender actually pulls
Mortgage underwriting commonly uses older FICO versions than the score in a banking app, pulled from all three bureaus. Where two borrowers apply together, lenders frequently use the lower of the two middle scores, which means the weaker file can set the price for both.
Practical consequence: if one applicant has a materially stronger file, it is worth asking the lender how they will treat the pair before assuming a joint application is better.
The whole picture, not just the score
| Factor | What it affects | Can you change it quickly? |
|---|---|---|
| Credit score | Rate tier, and approval at the low end | Partly, through utilization and error fixes |
| Debt-to-income | How much you can borrow | Yes, by clearing a whole payment |
| Down payment | Pricing, and whether insurance applies | Only by saving more |
| Reserves | Underwriter confidence | Slowly |
| Employment history | Whether income counts at all | No |
Applicants often focus on the score because it is the visible number, while debt-to-income is more often the actual constraint on how much a lender will advance.
Getting pre-approved, and what it is not
A pre-approval involves a real application, a hard inquiry, and document review, and tells you what a lender will actually lend. A pre-qualification is an estimate from limited information with a soft pull. Sellers generally treat them very differently, and only one is a meaningful signal.
Pre-approvals expire, commonly after a couple of months, and re-issuing may mean another credit pull. Timing it near a serious search is worth more than getting one early.
Where an improvement is worth the wait
- Just below a tier boundary? Waiting one or two statement cycles while balances report lower can move you up a tier. That is usually the highest-return delay available.
- Recent missed payment? Time is the only fix, and the effect fades over months rather than years.
- Error on the report? Fix it before applying. This is the one change that can move a score quickly and materially.
- Already 780+? Do not wait. You are at or near the best pricing available.
Frequently asked questions
Which score does a mortgage lender use?
Often an older FICO version than the one in your banking app, and frequently pulled from all three bureaus with the middle score used. Expect the number to differ from your free score.
Can I get a mortgage with no credit history?
Some programs allow manual underwriting using alternative records such as rent and utility payments. It is more work and not offered everywhere.
How long does it take to raise a score meaningfully?
Utilization changes can show within a month. Recovering from missed payments takes longer, because time and consistency are the only inputs.
Does checking my own score before applying hurt it?
No. That is a soft inquiry with no effect.
Do all three bureaus need to show the same score?
They will not match, because lenders do not all report to all three. Underwriting usually takes the middle of the three.
Will a pre-approval hurt my score?
It adds a hard inquiry. Doing all mortgage shopping inside a tight window means they count as a single event.
Can I be denied with a good score?
Yes. Debt-to-income, unverifiable income, or insufficient reserves can each block an application regardless of score.
Does a bigger down payment offset a lower score?
It often helps pricing and approval odds, and it does not replace a score requirement on programs that set one.
Written by
Teja PagidimarriTeja Pagidimarri built 43dots to answer money questions with numbers you can check. He is a software developer, not a licensed financial advisor, so every guide here is built the way an engineer would: figures pulled from the primary source, math shown in the open, and the calculators built from the actual published formulas.
Every figure on this page was checked against the primary source linked beside it. Drafting is AI-assisted; the research, the numbers, and the final edit are mine. See our editorial policy and corrections. This is general information, not personalized financial advice.
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