Auto Refinance Savings Calculator

This tool is for drivers who already have an auto loan and want to know — before talking to a lender — whether refinancing is actually worth the application. Most refinance calculators just spit out a payment delta; this one shows the total interest you'd avoid over the remaining months of your loan, which is the figure most lenders bury in fine print.

Plug in three numbers: your current balance (look at your most recent statement), your current APR (also on the statement or on the original contract), and the rate you'd qualify for today (use the live refinance-rate table further down the page if you don't know). We hold the term constant — refinancing into a longer term often increases total cost even when the monthly payment drops, so we don't recommend it unless you're actively trying to free up monthly cashflow.

Use the result to decide whether to submit a rate request. Monthly savings under $25 usually isn't worth the credit-pull hit and 2-3 hours of paperwork; over $50/month is almost always worth doing if your credit score has improved 40+ points since the original loan. Between $25 and $50 is a judgment call based on how many months you have left and whether you can absorb a small documentation fee.

This is an estimate, not a quote. Your actual refinance APR depends on credit score, debt-to-income, the lender's underwriting rules, and the age + mileage of your vehicle. Most lenders require a minimum loan balance ($5,000-7,500 is typical), an outstanding term of at least 12 months, and a vehicle under 10 years old. Documentation fees vary $0-95 and are not subtracted from your savings here.