Your credit score is one of the most powerful variables in your mortgage — it influences whether you qualify at all, which loan types you can access, what interest rate you receive, and how much mortgage insurance you'll pay. Understanding exactly where you stand before you apply can save you tens of thousands of dollars.
Minimum Credit Scores by Loan Type
Different loan programs have different floors, and within each program, lenders often set their own "overlays" — stricter requirements on top of the official minimums.
| Loan Type | Official Minimum | Practical Minimum (Most Lenders) |
|---|---|---|
| FHA | 500 (10% down) / 580 (3.5% down) | 580–620 |
| Conventional | 620 | 620–640 |
| VA | No official minimum | 580–620 |
| USDA | 640 (streamlined) | 640 |
| Jumbo | No official minimum | 700–720 |
FHA loans are the most accessible — a 580 score gets you in at 3.5% down. However, lender overlays mean many FHA lenders won't approve scores below 620 in practice, even though the official FHA minimum is 580. Shop around if your score is in the 580–619 range.
Conventional loans start at 620, but the pricing (risk-based adjustments) improves steadily as your score rises. The difference between 620 and 740 isn't just qualification — it's the interest rate you'll pay for the entire loan term.
VA loans have no official government minimum, but lenders set their own requirements, typically 580–620. VA loans remain the best available option for eligible veterans — no down payment, no PMI, competitive rates.
USDA loans require a 640 for automated underwriting approval. Manual underwriting may be possible below 640 but is slower and less predictable.
How Lenders Use Your Three Bureau Scores
When you apply for a mortgage, lenders pull your credit report from all three bureaus — Equifax, Experian, and TransUnion — and obtain a FICO score from each. They use the middle score, not the highest.
On a joint application with two borrowers, lenders take the middle score of each borrower and then use the lower of the two middle scores as the qualifying score. This matters:
- Borrower 1 middle score: 720
- Borrower 2 middle score: 660
- Qualifying score used: 660
If you're buying with a partner or spouse, check both of your scores before applying. If one borrower has a significantly lower score, it may be worth either delaying to improve that score or — in certain situations — applying with only the higher-score borrower (though this means the lower-income borrower's income doesn't count toward qualification).
The Real Dollar Impact of Your Credit Score
This is where the numbers get serious. Mortgage pricing is heavily tied to credit score bands. Here's what the rate difference looks like in real terms:
Example: $350,000 30-year fixed mortgage
| Credit Score | Approximate Rate | Monthly Payment | 30-Year Interest Total |
|---|---|---|---|
| 760+ | 6.50% | $2,213 | $446,680 |
| 720–759 | 6.75% | $2,270 | $467,200 |
| 680–719 | 7.00% | $2,329 | $488,440 |
| 640–679 | 7.50% | $2,447 | $530,920 |
| 620–639 | 8.00% | $2,568 | $574,480 |
Rates are illustrative and will vary with market conditions.
The difference between a 620 score and a 760+ score in this example is over $355 per month and more than $127,000 in total interest paid. Improving your score before applying isn't just nice to have — it's one of the highest-ROI financial moves available to you.
Even a smaller improvement matters. Going from 675 to 720 saves roughly $1,400 per year in the example above. If it takes you 6–12 months of credit work to get there, the math nearly always favors waiting.
How Your Score Also Affects Mortgage Insurance
Credit score affects not just your interest rate but also your private mortgage insurance (PMI) cost on conventional loans — and FHA mortgage insurance premiums vary by LTV rather than score, which is one reason FHA can be better for lower-score borrowers.
On conventional loans, PMI rates are credit-score tiered:
- 760+ score, 5% down: PMI around 0.46% per year
- 680 score, 5% down: PMI around 0.85% per year
- 640 score, 5% down: PMI around 1.30% per year
On a $300,000 loan, that's the difference between $115/month and $325/month in PMI alone — before the interest rate difference.
What to Do 6–12 Months Before Applying
If your score isn't where it needs to be, the following strategies have the most impact:
Pay Down Revolving Debt First
Credit utilization — how much of your available revolving credit you're using — accounts for approximately 30% of your FICO score and is the fastest-moving factor. Getting utilization below 30% helps; getting it below 10% helps even more.
Specific steps:
- Pay down credit card balances to under 10% of each card's limit if possible
- Don't close old accounts — closing them reduces your available credit and hurts utilization
- If you get a tax refund or bonus, put it into credit card payoff before saving for anything else
Stop Opening New Credit
Every new account creates a hard inquiry (a temporary 5–10 point hit) and lowers your average account age. For the 12 months before applying for a mortgage:
- Don't open new credit cards
- Don't finance a car
- Don't open store credit accounts at checkout
- Don't let anyone run your credit for any reason without discussing it with your mortgage advisor first
Dispute Errors on Your Credit Reports
One in five credit reports contains errors serious enough to affect lending decisions, according to FTC research. Pull all three reports for free at AnnualCreditReport.com and review every account.
Dispute inaccuracies directly with the bureaus:
- Accounts that aren't yours (possible identity theft or mixed file)
- Late payments reported incorrectly
- Balances shown higher than actual
- Accounts listed as open that are actually closed
- Duplicate collection accounts
Disputes that succeed can remove negative items or correct balance information, sometimes improving scores by 20–50+ points.
Use the Rapid Rescore Process
If you've paid down debt or resolved a dispute but your scores haven't updated yet, ask your lender about a rapid rescore. This is a process where your lender submits documentation of a recent account change directly to the credit bureaus, and updated scores are returned within 3–5 business days — rather than waiting for the normal monthly reporting cycle.
Rapid rescore is only available through lenders, not directly through bureaus or score monitoring services. It costs $25–$50 per account per bureau, typically charged to the borrower, but can be worth it if you're on the edge of a rate tier.
Don't Make Large Purchases or Deposits Before Closing
After you apply, underwriters monitor your credit right up to closing — often pulling a "soft refresh" shortly before closing day. New accounts, new hard inquiries, or balance increases can trigger additional questions or even kill an approved loan. Once you're in the mortgage process, do not make any significant credit moves until after you close.
What If Your Score Is Too Low Right Now?
If your score is below the threshold you need, set a realistic timeline:
- Score below 500: You'll need 12–24 months of focused credit repair before most loan programs are available
- Score 500–579: FHA is technically possible but operationally difficult; 6–12 months of work can get you to 580+ where things open up significantly
- Score 580–619: Many lenders will work with you; consider FHA now or spend 3–6 months targeting 620+
- Score 620–659: You qualify for conventional but with premium pricing; 6–12 months to 680+ is worth the wait in most cases
- Score 660–719: You're in good shape; getting to 720+ adds pricing improvements, especially on PMI
The wait is almost always worth it. A year of credit work can save you more money over the life of your mortgage than any other single financial decision you make.