Your score isn't a random number. It's calculated from five categories, and each one tells your lender something different about the risk you carry. Know what you're being measured on before you apply.
The most common credit scoring model used by mortgage lenders is FICO. It's a number between 300 and 850, and lenders use it to set your interest rate, determine which loan products you qualify for, and sometimes decide whether to approve you at all.
FICO doesn't calculate your score from one factor. It weighs five distinct categories of your credit behavior, each with a different level of influence on the final number. Two people can have the same score but very different profiles. A 720 built on perfect payment history looks different to a lender than a 720 built on a thin file with no missed payments but only one account.
Understanding what's actually being measured helps you manage your credit with intention, not just hope the number goes up on its own.
Each category carries a different weight. The two biggest ones are also the two you have the most direct control over.
Mortgage lenders don't set your rate based on a gut feeling. They use a pricing model called Loan Level Price Adjustments (LLPAs), which applies a rate surcharge based on your score and down payment combination.
On a $350,000 loan, moving from a 680 score to a 740 can lower your rate by 0.5% to 0.75%. That's roughly $100 to $145 less per month. Over five years, the difference is between $6,000 and $8,700 in additional interest paid by the borrower with the lower score.
The tiers that matter most for conventional loans are 620, 640, 660, 680, 700, 720, and 740. Once you're above 740, most lenders don't price you significantly better. The goal is getting into the best pricing tier, not optimizing infinitely above that threshold.
For FHA loans, the minimum is 580 for 3.5% down. For VA and USDA loans, there's no official floor, but most lenders set one around 620. Our guide on credit scores for conventional loans covers the LLPA tier differences in detail.
| FICO Score Range | Mortgage Impact |
|---|---|
| 760 and above | Best pricing available |
| 740 – 759 | Near-best pricing |
| 720 – 739 | Competitive rates |
| 700 – 719 | Slightly elevated pricing |
| 680 – 699 | Rate adjustments apply |
| 660 – 679 | Meaningful surcharges |
| 640 – 659 | Higher rate, limited programs |
| 620 – 639 | Minimum for most conventional |
| 580 – 619 | FHA only (3.5% down) |
Rate adjustments vary by loan type, down payment, and lender. These reflect conventional loan pricing tiers as a general reference.
Some of these take time. Others show results within one billing cycle. The five components tell you exactly which levers you have right now.
Before you do anything else, get the full picture on your credit file. We review your credit as part of the pre-approval process and can show you exactly which component is holding your score back, and what to do about it before you start shopping.
These pages go deeper on the credit and approval topics that come up most often with Florida buyers.
Run your numbers with us before you start shopping. You'll know exactly what you qualify for and what your rate looks like at your current score.