A 620 credit score sits exactly on a line that matters. For conventional loans backed by Fannie Mae and Freddie Mac, 620 is the floor. Below it, most lenders can’t sell the loan on the secondary market, so they won’t write it. At 620, you’re approved but you’re standing at the very edge of the window, and the pricing you get will remind you of that.
So refinancing with a 620 credit score is realistic. It just isn’t cheap. How much it costs and whether it’s worth doing depends on three things: your loan-to-value ratio, your debt-to-income ratio, and which loan program you qualify for.
Why 620 Matters More Than the Number Suggests
Credit scores get bucketed. Lenders don’t price a 619 differently from a 618, but they do price a 619 differently from a 620, and differently again from a 639. The 620 to 639 band is its own risk tier, and it’s the most expensive tier a conventional loan can occupy.
That has a practical consequence: if you’re at 618 right now, spending three weeks nudging your score over 620 can be worth more than a year of shopping around. A single late payment falling off, or a credit card balance dropping under 30% utilization, can move you into a cheaper bracket. A common path is starting at 600 and working up; there’s a decent breakdown of what refinancing looks like at a 600 credit score if you want to see the rung below you.
What a 620 Score Actually Costs in Rate
Two things happen to your pricing at 620. The base rate a lender quotes is higher, and then loan-level price adjustments (LLPAs) get stacked on top. LLPAs are fees Fannie and Freddie charge based on credit score and LTV, and they’re usually baked into your rate rather than paid upfront.
Loan-level price adjustments in plain numbers
In the 620 to 639 band, LLPAs typically run somewhere between 1.5 and 2.75 points depending on your LTV. A borrower at 760 with the same LTV pays zero. On a $250,000 loan, one point is $2,500, so you’re looking at $4,000 to $6,900 of cost that a high-score borrower simply doesn’t carry.
Translated into rate, a 620 borrower often ends up roughly 0.5 to 0.875 percentage points above a 760 borrower. On a $250,000 balance that’s about $90 to $125 extra per month. Not catastrophic. But it’s real money, and it’s the number that decides whether refinancing makes sense at all.
Which Loan Programs Will Take You at 620
- Conventional (Fannie/Freddie): 620 is the minimum. Cash-out refinances typically cap at 80% LTV, rate-and-term at 95% for primary homes.
- FHA: HUD allows scores well below 620, but most FHA lenders set their own floor at 620 or 640. FHA streamline refinances are the easiest path here because they skip the appraisal and often skip a full credit review.
- VA: The VA itself doesn’t set a minimum, but individual lenders usually require 620. VA IRRRLs are frequently approved at lower scores because there’s no appraisal and minimal underwriting.
- USDA: Streamline-assist refinances are genuinely lenient, but you must already have a USDA loan.
If you’re self-employed, have a thin credit file, or your score is 620 mostly because of a recent collection, expect overlays. Many lenders add their own rules on top of the agency minimums, and those overlays are where 620 applications die. A lender-by-lender look at which refinance lenders approve bad credit borrowers is worth reading before you start filling out applications.
Where a 620 Gets in the Way
Rate-and-term refinancing on your primary residence at 620 is very doable. Everything else gets harder.
A cash-out refinance at 620 is allowed, but you’ll pay a higher LLPA for the LTV tier and the cash-out itself carries an extra pricing hit. Investment properties are worse: Fannie and Freddie add another 2 to 3.5 points for non-owner-occupied loans, which stacks on top of your score adjustment. A jumbo loan is effectively off the table, since most jumbo investors want 700 or better.
Debt-to-income is the quiet killer. Even at a perfect credit score, most conventional lenders cap DTI at 50%. At 620, many tighten that to 43% or 45%. If your score is low and your DTI is high, you’re likely looking at FHA or waiting.
The Break-Even Math Nobody Bothers to Run
Here’s a scenario. You owe $250,000 at 7.25% with 27 years left. Your payment is about $1,705. You refinance to 6.75%, which drops it to roughly $1,620. You save $85 a month.
Closing costs on a $250,000 refinance typically land between 2% and 3%, so call it $5,500 to $6,500. At $85 a month, you need 65 to 76 months just to get your money back. That’s over five years. If you plan to sell in three, the refinance loses you money.
This is why the rate you’re offered matters less than the spread between your current rate and the new one, minus costs. Anything under a 0.75 point improvement at 620 is usually not worth the fees unless you’re also dropping mortgage insurance or shortening the term. If you want a structured way to think about costs versus savings, this guide on refinancing with a low credit score without overpaying walks through where the money actually leaks.
What Actually Moves a 620 Up Fast
Most credit advice is slow. These levers are not:
- Pay revolving balances below 30% of the limit. Utilization is roughly 30% of your score and it updates monthly. Going from 60% to 25% utilization can move a 620 to 650 within one billing cycle.
- Ask for a rapid rescore. If you pay down a card or a collection gets deleted, a lender can order a rapid rescore through the credit bureaus. Results in 3 to 5 business days instead of 30 to 45.
- Become an authorized user. A family member adding you to a seasoned card with a low balance can lift a thin file in weeks.
- Don’t close old accounts. Closing a card cuts your available credit and pushes utilization up. Leave them open with a small recurring charge.
- Dispute genuine errors. Duplicate collections and paid-off accounts still reporting as open are common. Each removal can be worth 10 to 20 points.
If your score is closer to 580 than 620, the math changes and so do the lender options. There’s a separate reality at refinancing with a 580 credit score, where FHA becomes the default and conventional mostly disappears.
How to Shop Without Getting Hammered
Get quotes from at least three sources: a mortgage broker who can see multiple wholesalers, a credit union that keeps loans in portfolio, and your current servicer. Servicers often have retention offers they don’t advertise, and a single phone call asking what they can do for a 620 borrower sometimes beats a full application elsewhere.
Rate shopping within a 14-day window counts as one credit inquiry for scoring purposes, so pull the trigger on all three at once rather than spreading them across a month. Ask each one directly: what’s the rate, what are the total closing costs, and does this loan carry mortgage insurance? Get all three in writing on a Loan Estimate.
Watch for the broker who quotes a rate with 3 points of discount fees bundled in. At 620, a no-points option with a slightly higher rate is often the better deal, because your break-even window is already long. Compare the annual percentage rate, not just the note rate, and ask what the payment looks like in year eight, not just year one.
One last thing worth checking before you sign anything: whether your current lender will simply renegotiate. A modification costs them far less than losing the loan, and a borrower at 620 who has made twelve straight on-time payments has more leverage than the score suggests.