No single factor influences your mortgage interest rate more than your credit score — outside of overall market conditions. The difference between a 620 and a 760 credit score can mean 0.75–1.50% in rate on a conventional loan, translating to $200–$400/month in payment difference on a $500,000 mortgage. Understanding how scores work, what minimums apply to each loan type, and how to improve your score before applying is essential knowledge for any home buyer.
How Lenders Use Credit Scores
Mortgage lenders pull from all three bureaus (Experian, Equifax, TransUnion) and use the middle score of the three. If you have scores of 690, 714, and 725, your qualifying score is 714 — the middle value.
On a joint application (two borrowers), lenders use the lower of the two middle scores. This is important: if one spouse has a 760 and the other has a 640, you qualify as a 640-score borrower for rate and program purposes.
Scores are calculated using the classic FICO model (FICO 2, 4, and 5 by bureau for mortgage purposes) — not VantageScore, not the free scores you see on Credit Karma, which can differ by 10–30+ points.
Minimum Credit Scores by Loan Type (2026)
| Loan Type | Minimum Score | Notes |
|---|---|---|
| Conventional (Fannie/Freddie) | 620 | 620 qualifies; pricing worsens below 680 |
| FHA | 580 | With 3.5% down; 500–579 requires 10% down |
| VA | No official minimum | Most lenders require 620 in practice |
| USDA | 640 | GUS automated approval; manual underwriting may allow 580 |
| Jumbo | 700–720 | Varies by lender; 740+ for best pricing |
| DSCR (non-QM) | 660–680 | Varies by program and LTV |
| Bank statement (non-QM) | 660–680 | Varies |
How Credit Score Affects Your Rate: Loan Level Pricing Adjustments (LLPAs)
On conventional loans, Fannie Mae and Freddie Mac use LLPAs — pricing add-ons based on credit score and LTV. These add-ons are passed through as rate increases.
Example LLPA impact on a $450,000 loan at 80% LTV:
| Credit Score | LLPA Add-On | Rate Impact (approx.) | Monthly Cost |
|---|---|---|---|
| 760+ | 0.000% | Base rate | $0 |
| 740–759 | +0.250% | +0.063% rate | +$18/mo |
| 720–739 | +0.500% | +0.125% | +$35/mo |
| 700–719 | +0.875% | +0.219% | +$62/mo |
| 680–699 | +1.250% | +0.313% | +$88/mo |
| 660–679 | +1.750% | +0.438% | +$123/mo |
| 640–659 | +2.250% | +0.563% | +$159/mo |
| 620–639 | +3.000% | +0.750% | +$211/mo |
Going from 620 to 760 saves approximately $211/month — $75,960 over 30 years on the same loan.
What Makes Up Your Credit Score
FICO scores are calculated from five factors:
| Factor | Weight | What It Measures |
|---|---|---|
| Payment history | 35% | On-time payments on all accounts |
| Credit utilization | 30% | Balances vs. credit limits |
| Length of credit history | 15% | Age of oldest/newest accounts and average age |
| Credit mix | 10% | Variety of account types (revolving, installment) |
| New credit | 10% | Recent hard inquiries and new accounts |
Payment history and utilization together drive 65% of your score — these are also the two factors you can improve most quickly.
How to Improve Your Score Before Applying
Fastest Impact (30–60 days)
Pay down revolving credit card balances. Credit utilization is the fastest lever. If you have a $10,000 credit limit with a $7,000 balance (70% utilization), paying it down to $1,000 (10% utilization) can add 30–70 points within one statement cycle.
Target: Keep all cards below 30% utilization; below 10% for maximum points.
Request a credit limit increase (without a hard pull). If your limit goes from $5,000 to $8,000 and your balance stays at $2,000, utilization drops from 40% to 25%.
Become an authorized user on a family member's long-standing, low-utilization card. Their positive history can improve your score.
Medium-Term (60–120 days)
Dispute inaccuracies on your credit report. Pull free reports at AnnualCreditReport.com and review all three bureaus. Dispute any accounts you don't recognize, wrong balances, or incorrect late payment marks.
Pay any collection accounts — though note that paid vs. unpaid collections have less impact under newer FICO models than they once did. Medical collections under $500 are ignored in most current FICO versions.
Don't close old credit cards. Closing accounts reduces available credit (increasing utilization) and shortens credit history length — both hurt your score.
What Hurts Your Score Right Before Applying
- Opening new credit cards or taking on new loans (new inquiries + new accounts)
- Large purchases on existing credit cards (spikes utilization)
- Missing any payment — even 30 days late can drop your score 50–100 points
- Co-signing someone else's loan (counts as your debt)
Mortgage-Specific Score Advice
Check your mortgage score — not just the consumer scores. Pull your official FICO 2, 4, and 5 scores from myFICO.com ($40–$60). These are the mortgage-specific scores lenders will see.
Rate shopping doesn't hurt your score. Multiple mortgage inquiries within a 45-day window count as a single inquiry for FICO purposes. Shop freely.
Know your target score for your loan type:
- FHA: 580 (3.5% down) or 620 (better pricing)
- Conventional: 680+ (decent pricing); 720+ (good pricing); 740+ (best pricing)
- VA: 620 minimum (most lenders)
- Jumbo: 720+ minimum; 740+ preferred
FAQ
How long do I need to improve my score before applying? Utilization changes can reflect in 30–45 days. Late payments take 7 years to fall off but their impact diminishes significantly after 12–24 months of on-time payments. In most cases, 3–6 months of focused credit improvement shows meaningful results.
My spouse has a low score — should they be on the loan? Not necessarily. If you can qualify solo (sufficient income and DTI), you may get better pricing without the lower-score co-borrower. The trade-off: only one income counted, which may reduce your loan amount.
Does pre-approval hurt my credit? Yes — one hard inquiry, typically reducing score by 2–5 points temporarily. This recovers within 3–6 months. Don't let inquiry concern prevent you from applying.
Let's Review Your Credit Before You Apply
I can pull a soft credit check to identify your scores and potential improvements before a formal application. No hard inquiry, no commitment.
📞 970-708-9624 | tj@taytoncapitalllc.com
Contact Tayton Capital → | Apply Online
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