FICO Loan Savings Calculator
A higher credit score usually means a lower interest rate — and on a mortgage or auto loan that difference can be worth tens of thousands of dollars. Enter the APR you qualify for today and the APR a better score could unlock to see the monthly and lifetime savings. Runs entirely in your browser.
Frequently Asked Questions
How does my FICO score affect my loan interest rate?
Lenders sort borrowers into credit tiers based largely on FICO scores. Higher scores signal lower default risk, so lenders quote lower APRs. On a 30-year mortgage, borrowers in adjacent score tiers commonly see APR differences of 0.25–0.75 percentage points — small on paper, enormous over 360 payments.
How much can a 0.5% lower rate really save?
A lot more than you'd guess. On a $300,000, 30-year mortgage, 7.5% vs 7.0% costs about $36 less per month — but roughly $13,000 less in total interest. Stretch that to a full percentage point and you're looking at savings well over $50,000. Interest compounds; time multiplies it.
Does this calculator use real lender rate tiers?
No — and deliberately so. Published "rate by FICO score" tables go stale fast and vary by lender, loan type, and market. You enter both APRs yourself, so the comparison stays honest: it shows what the difference would cost or save at whatever rates you were actually quoted.
How is the monthly payment calculated?
Standard amortization: monthly payment = P × r ÷ (1 − (1 + r)^(−n)), where P is the loan amount, r is the monthly rate (APR ÷ 12), and n is the number of payments. Total interest is the monthly payment times the number of payments, minus the original principal.
What raises a FICO score fastest before applying for a loan?
Paying down revolving balances relative to their limits (lower utilization) usually moves the needle fastest, followed by avoiding new applications and late payments in the months before you apply. Avoid opening or closing accounts right before a mortgage application, and get quotes within a 14–45 day rate-shopping window so multiple inquiries count as one.
Should I wait to buy until my score improves?
Run the numbers first. If a few months of score improvement could save you tens of thousands, waiting may be the best financial move you ever made. But if prices or rents in your area are rising faster than the potential savings — or your life circumstances require the purchase — locking in now and refinancing later can be the better play.