A $350,000 loan at 6.75% costs about $2,270 a month in principal and interest. The same loan at 7.50% costs about $2,447, a gap of roughly $177 a month. Over five years that is about $10,600 in extra payments, and you would still owe about $2,600 more on the balance. A lower credit score generally means a higher rate, but how much higher depends on the loan program, the down payment, and the lender. (Illustration only, using the standard amortization formula for a 30-year fixed loan. Not a quote.)
That is the real shape of mortgage rates for low credit score borrowers: a price increase, not a closed door. Duane Buziak, NMLS #1110647, walks through why the price rises, which programs accept lower scores, what a 640 and a 740 cost side by side, how to compare offers without hurting your credit, and what you can fix before applying.
- Why a lower credit score raises your mortgage rate
- Mortgage programs that accept lower credit scores
- Worked example: what a 640 vs. a 740 score costs over five years
- How to compare rates without hurting your credit
- Ways to improve your rate before you apply
- Frequently asked questions about low-credit mortgage rates
- A lower score raises the price, not the barrier
Why a Lower Credit Score Raises Your Mortgage Rate
Mortgage pricing is risk-based. Lenders and the investors who buy loans are pricing the chance that a loan goes delinquent, and credit score is one of the strongest predictors of that. A rate sheet starts with a base rate for an ideal borrower, then adds adjustments as the score tier drops.
For conventional loans, a large part of that adjustment comes from loan-level price adjustments, or LLPAs. Fannie Mae and Freddie Mac publish LLPA matrices that set a fee as a percentage of the loan amount, based on credit score band and loan-to-value ratio. The fee is usually folded into the rate rather than billed separately. A borrower in a lower score band with a small down payment sits in the more expensive cells of that grid. You can review the current grid on Fannie Mae’s site, since the figures are revised periodically.
What counts as a low credit score
There is no single cutoff. Many lenders treat scores below 680 as a pricing tier where adjustments begin to bite, and 620 is the usual floor for conventional loans. Fannie Mae’s Selling Guide, also on fanniemae.com, governs the conventional minimum, so check it for the current language. Below 620, government-backed programs are usually the practical route.
Why there is no single official number
Score is only one input. The same 660 can produce very different quotes depending on:
- Down payment or equity, which sets the loan-to-value ratio
- Debt-to-income ratio
- Property type, such as a single-family home versus a condo or multi-unit
- Occupancy, meaning primary residence versus investment property
- Loan program and lender overlays
That is why a borrower with a 660 score and 20% down can sometimes get a better quote than a borrower with a 700 score and 3% down. Treat any rate you see advertised as a starting point for a borrower with a specific profile, not as your rate.
Mortgage Programs That Accept Lower Credit Scores
Different programs set different floors, and lenders layer their own rules on top.
FHA. HUD guidance allows a minimum score of 580 for a 3.5% down payment, and scores from 500 to 579 generally require 10% down. The details sit in HUD Handbook 4000.1 at hud.gov. In practice many lenders set higher minimums than HUD does, so a 580 borrower may find fewer willing lenders than the handbook suggests. FHA also carries mortgage insurance premiums, including an upfront premium, that affect total cost.
Conventional. The general minimum is 620. As the score falls within the conventional range, two costs rise together: the pricing adjustment on the rate and the private mortgage insurance premium when the down payment is under 20%. A conventional loan at 640 can cost noticeably more per month than at 740 even with identical down payments.
VA. The VA does not publish an official minimum credit score. Individual lenders set their own, often somewhere in the 580 to 620 range. Eligibility rules for service members, veterans, and certain surviving spouses apply, and you can review them at va.gov.
USDA. USDA-guaranteed loans exist for eligible rural and suburban properties and borrowers who meet the program’s rules. Lenders set their own score requirements here too, and property location and household eligibility are checked alongside credit.
How overlays change your quote
An overlay is a lender’s internal rule that is stricter than the program minimum. Suppose two lenders both offer FHA loans and you have a 600 score. One may require a 620 minimum and decline you. The other may accept 600 but add a pricing adjustment, or require a lower debt-to-income ratio. Even among lenders that accept you, rates on the same FHA loan can differ because each prices risk on its own terms. This is the main reason a single quote tells you very little about what is available.
Worked Example: What a 640 vs. a 740 Score Costs Over Five Years
Suppose you borrow $350,000 on a 30-year fixed loan with the same down payment either way. Start from a base near the average published in the Freddie Mac Primary Mortgage Market Survey, which updates weekly, and check the current figure before you plan around any number. The rates below are illustrative spreads for demonstration, not quotes or current market rates.
| Score tier | Example rate (illustrative) | Monthly principal and interest | Interest paid over 5 years | Balance after 5 years |
|---|---|---|---|---|
| 740 | 6.50% | about $2,212 | about $110,400 | about $327,600 |
| 640 | 7.25% | about $2,388 | about $123,600 | about $330,300 |
| Difference | 0.75 point | about $175 more | about $13,200 more | about $2,700 more |
All figures come from the standard amortization formula and are rounded. They exclude taxes, homeowners insurance, mortgage insurance, and fees, and the 640 borrower would likely pay more in mortgage insurance on top of this gap. Actual rates depend on loan type, points, down payment, and lender, so your own numbers will differ.
Notice what the table says about balance. The 640 borrower paid more interest and also built less equity in the same five years. If you plan to hold the loan longer, the gap compounds.
One Virginia data point
Loan size also changes which pricing applies. FHFA set the 2026 baseline conforming loan limit at $832,750, with a higher ceiling of $1,249,125 in designated high-cost areas, which includes Northern Virginia localities such as Fairfax and Arlington. Loans above the applicable limit are jumbo loans with separate credit standards. See the FHFA conforming loan limit announcement for your county.
How to Compare Rates Without Hurting Your Credit
A common belief is that every lender you talk to costs you points. Scoring models are built to account for rate shopping: multiple mortgage inquiries within a short window are generally treated as a single inquiry. The length of that window varies by scoring model, commonly from 14 to 45 days. The Consumer Financial Protection Bureau covers shopping for a mortgage, so confirm the current window before you start. Keep your comparisons inside it.
A clean comparison follows a set order:
- Request a Loan Estimate from each lender. This standardized three-page form shows the rate, points, and costs in the same layout.
- Compare the same loan type, such as 30-year fixed conventional or 30-year fixed FHA, with the same down payment and the same loan amount.
- Compare on the same day, since rates move daily and sometimes intraday.
- Look at rate, discount points, and lender fees together. A lower rate that comes with higher points may not cost less over the time you will hold the loan.
- Use APR carefully. It folds some fees into a yearly rate, which helps compare similar loans, but it assumes you keep the loan for its full term and does not capture every cost.
Independent comparison versus a single rate sheet
Large national lenders such as Rocket, Movement, and Veterans United originate loans through their own rate sheets, so a quote from each reflects that one company’s pricing and guidelines. An independent consultant works differently. Duane Buziak compares options across hundreds of wholesale lenders and can place a loan with the one whose guidelines and pricing fit your profile. That matters most for lower scores, where overlays differ widely between lenders.
The rate comparison at Grand Rates by Duane Buziak does not hurt your credit, and it costs nothing. You still receive formal Loan Estimates when you move forward, which is the document to use for a final side-by-side check against any other offer.
Ways to Improve Your Rate Before You Apply
Credit fixes that move fastest
- Check for errors. You can pull free reports at annualcreditreport.com. If something is wrong, the CFPB explains how to dispute it with the bureau and the furnisher.
- Lower revolving balances. Utilization below roughly 30% of each card’s limit is a common benchmark, and lower generally helps more.
- Avoid new accounts. New inquiries and new debt can pull a score down right before underwriting.
Rapid rescore
If you pay down a balance or correct an error, a lender can request a rapid rescore, which asks the credit bureaus to update your file faster than the normal reporting cycle. You cannot order one yourself. It is lender-initiated, and the result is not guaranteed, because the score only moves if the underlying data changes enough.
Structure levers and their tradeoffs
- Larger down payment. Lowers loan-to-value and often the pricing adjustment, but ties up cash you may want in reserve.
- Lower debt-to-income ratio. Paying off a car loan or card can open better terms, though using savings to do it reduces reserves.
- Co-borrower. A second income can help the ratios, but their credit and debts are evaluated too, and both are on the loan.
- Buying points. Paying upfront reduces the rate, but it only pays off if you keep the loan past the break-even point.
Revisiting the rate later
If your score improves after closing, a refinance may bring a lower rate. Whether it makes sense depends on how far rates have moved, closing costs, and how long you plan to stay, so the timing can not be promised. Run the break-even math on any offer before deciding.
Frequently Asked Questions About Low-Credit Mortgage Rates
What credit score do you need to buy a house in 2026?
As of October 2026, conventional loans generally require 620, and FHA allows 580 with 3.5% down under HUD guidance. Lenders can set higher minimums than the program, so the score you need depends on the lender.
Can I get a mortgage with a 580 score?
Often yes, through FHA, which allows 580 with 3.5% down. Some lenders add their own overlays, so you may need to compare lenders to find one that accepts that score.
How much higher is the rate with a 620 score?
It varies by lender, loan-to-value ratio, and market conditions, and it may be a fraction of a point or more compared with a 740 score. Mortgage insurance on a small down payment can add further cost.
Does a larger down payment offset a low score?
Partly. A larger down payment lowers loan-to-value, which reduces the pricing adjustment and sometimes the insurance cost, but it does not erase the score penalty.
Will shopping rates lower my score?
Multiple mortgage inquiries within a short window are generally treated as one for scoring. The window length depends on the scoring model, so confirm it with the CFPB before you start. A comparison through Grand Rates by Duane Buziak does not hurt your credit.
Is FHA better for low credit?
Not automatically. FHA accepts lower scores, but its mortgage insurance costs can make it more expensive than a conventional loan at 660 or higher. Compare the full monthly payment under each program.
Can I refinance later?
Yes, if you qualify at that time. A better score may improve the rate, but closing costs and your timeline decide whether it is worth it.
What is a rapid rescore?
It is a lender-requested update of your credit file after you pay a balance or fix an error. You cannot request it yourself, and it does not guarantee a higher score.
How long does it take to raise a score?
Correcting an error or paying down a card can show within one to two billing cycles. Rebuilding after late payments or collections takes longer, often many months.
Do credit unions or online lenders charge less?
Neither type is consistently cheaper. Pricing depends on each lender’s guidelines and your profile, so compare Loan Estimates for the same loan on the same day.
A Lower Score Raises the Price, Not the Barrier
A lower score raises the price of a mortgage but rarely ends the option. The gap is real, as the numbers above show, yet it varies widely by program and lender, and it can often be narrowed with a few weeks of focused work.
Ready to secure a competitive mortgage rate for your Virginia home without impacting your credit score? Get your free personalized rate comparison from an independent consultant recognized as one of Virginia’s top loan officers, with no obligation and no hidden fees.
