A 638 credit score will get you a conventional loan. It won’t get you the same deal everywhere, and that gap matters more than most buyers realize. Two lenders can advertise identical rates on their homepages, then price your file almost three-quarters of a point apart once your mid-score drops into their pricing engine.
Fannie Mae and Freddie Mac write the base rules. Lenders add their own on top. If your score sits in the fair range, the difference between an approval and a polite decline usually comes down to which lender you walked into, not whether you qualify at all.
What Fair Credit Actually Means to a Conventional Lender
Lenders don’t use the word “fair.” They use score buckets, and every bucket carries a loan-level price adjustment (LLPA) that lands in your rate or your closing costs.
Here’s roughly how that looks on a 30-year fixed with 5% down:
- 620–639: the steepest adjustment tier, often 2.25% to 3% of the loan amount in points
- 640–659: noticeably cheaper, roughly half that hit
- 660–679: cheaper again
- 680–699: most of the fair-credit penalty disappears
On a $300,000 loan, going from a 635 to a 645 can save close to $3,000 in upfront costs or about half a point on the rate. That’s why so many borrowers get told to wait 60 days and re-pull.
The 620 floor and the 3% down programs
Standard conventional loans need a 620 mid-score. Fannie Mae’s HomeReady and Freddie Mac’s Home Possible sit at the same 620 floor, but they cut mortgage insurance costs and let first-time buyers put down 3% instead of 5%. HomeReady caps household income at 80% of your area median income, which in many metros lands somewhere between $68,000 and $95,000 for a two-person household. That ceiling surprises people who assume they earn too much to qualify.
Above 95% loan-to-value, both programs hold firm at 620. Drop below 80% LTV and mortgage insurance vanishes entirely, which changes the math quickly in your favor.
Which Conventional Lenders Actually Work With a 640 Score
Large national banks have spent a decade tightening. Plenty now want 660 or better, and a few layer on reserve or employment-gap requirements Fannie never asked for. Your realistic pool looks like this:
Community banks and credit unions
A local bank that keeps loans in portfolio has discretion an automated system doesn’t. They might approve a 628 score at 43% DTI with six months of reserves when a call-center lender won’t return the call. The catch is that portfolio lenders often price a little higher and prefer an existing relationship, so opening a checking account there first genuinely helps.
Mortgage brokers with wholesale access
A broker can run your file past 15 to 30 wholesale lenders in an afternoon and see whose pricing engine likes your profile. In the fair-credit range that’s not a gimmick. A 20-point difference in a lender’s internal cutoff decides everything.
Non-bank lenders that publish their overlays
Some online lenders list their score floors and DTI caps in plain language on their own sites. If a loan officer won’t tell you the minimum score over the phone, treat that as information. Ask directly and note whether the answer sounds rehearsed.
The Real Trade-offs at a Fair Credit Score
Approval is the easy part. Cost is where fair credit bites.
Mortgage insurance. At 95% LTV and a 640 score, expect private mortgage insurance around 0.9% to 1.2% of the loan amount annually. On a $300,000 loan that’s roughly $225 to $300 a month. PMI falls off automatically at 78% LTV on the original amortization schedule, and you can request removal at 80%.
Debt-to-income. Automated underwriting will stretch to 50% DTI when compensating factors show up, like solid reserves or years of on-time rent. Manual underwriting usually caps closer to 45%. A $600 car payment can be the entire difference between approval and denial.
Reserves. Two months of housing payments is typical. Files with a thin savings cushion get flagged more often, and fair-credit files get flagged first.
When FHA Beats Conventional at 640
Run both scenarios before you commit. FHA allows 3.5% down with a 580 score, and its pricing doesn’t punish a 640 the way conventional LLPAs do. The trade-off is mortgage insurance for the life of the loan unless you refinance out of it.
Picture a $280,000 purchase with 3.5% down: FHA charges a 1.75% upfront premium plus roughly 0.55% annually. Conventional with 3% down and a 640 score might carry a higher monthly MI but drops it at 78% LTV. Stay 10 years and conventional usually wins. Need to buy this spring with a thin file, FHA is often the cleaner path. Our look at FHA lenders that approve a 540 score maps out where those floors really sit.
Below 620, conventional is off the table entirely. At that point you’re looking at lenders who work with a 500 credit score as a bridge rather than a destination. If you’ve served, VA lenders for bad credit routinely go lower than any conventional option, and there’s no monthly mortgage insurance at all. Buying outside a city, USDA’s zero-down program deserves a look too, and this rundown of lenders that close zero-down rural mortgages explains which ones actually get to the closing table.
How to Move Your Score Before You Apply
You have more control here than it feels like. Six weeks of disciplined behavior often moves a mid-score 15 to 30 points, which is real money at these pricing tiers.
- Pay revolving balances before the statement date, not the due date. Utilization is reported from the statement balance, so timing is everything.
- Get under 10% utilization if you can. A $3,000 balance on a $10,000 limit reads as 30% and costs you points.
- Don’t close old accounts. Closing a card shrinks your total available credit and pushes utilization up.
- Dispute genuine reporting errors. A collections account that isn’t yours can be removed in 30 days, and rapid rescore can update it within days of the correction.
- Ask about a rapid rescore if you’re under contract. It’s a legitimate service, usually $25 to $50 per item per bureau.
- Freeze new credit applications for six months before applying. Each inquiry on a thin file dings harder than it does on a 20-year history.
One more lever: a co-borrower with strong credit can pull the qualifying score up, since automated underwriting uses the lower of the two mid-scores in most cases and the higher in a few. Ask the loan officer which rule their investor applies.
What to Ask Every Lender on Your Shortlist
Four questions separate a lender who does fair-credit conventional loans from one who talks a good game.
- What is your minimum mid-score for a conventional loan, and does it change for condos or 2-4 unit properties?
- Which LLPAs apply to my exact score and LTV, and how many points will that add?
- Do you have overlays above Fannie’s guidelines on reserves or DTI?
- Can you show me the loan estimate both with and without a 20-point score improvement?
Whoever answers those in specific numbers, without deflecting to a pre-approval call, is worth your application fee. Get two or three loan estimates within the same 14-day window so the credit pulls count as a single inquiry, and compare the box A origination charges side by side rather than the headline rate. Rate is what the ads show; the loan estimate is what you actually pay.