What is RefiFastCalc?

RefiFastCalc is a professional refinance analysis tool, available to everyone. Built for you to help you make the best refinancing decisions with lightning fast results. RefiFastCalc is also a fantastic learning tool, since you can adjust your input data and see immediate changes in your break-even and savings.

Is it really free?

Yes, completely. There are no payments of any kind, ever - no subscriptions, and no fees, ever.

Who is RefiFastCalc for?

For everyone interested in learning and making better informed decisions! From homeowners weighing a mortgage refi, to auto, business, credit-card, and personal loans — if you want to know your numbers before you sign, this is the app for you.

How accurate are the numbers?

Every formula uses industry-standard methods — the same amortization math your lender uses. Where we show a benchmark rate it comes from the Federal Reserve (FRED): a national average, labeled with its as-of date and updated weekly or quarterly. It is a benchmark, never a live quote — the rate you can actually get should beat it, and any figure you enter yourself always overrides it. Your data and input is part of the equations, so take care with the estimates you use, and adjust to your best estimates.

How is the break-even month calculated?

Your monthly saving is your current payment minus the payment on the new loan, where the new payment is calculated on the balance you carry now, at the rate and term of the offer. Break-even is your total refinance cost divided by that monthly saving, rounded up to the next whole month. If the new payment is not lower than your current one there is no break-even month, and we say so rather than show a number. The full method — including what the math does not include — is on the methodology page.

Does RefiFastCalc run a credit check?

No. RefiFastCalc never runs credit checks — soft or hard. Prequalification always happens directly with a lender or lending network. Nothing on this site pulls your credit, and there is no application to fill in.

What happens to the numbers I enter?

They stay with you. The loan details you enter — balances, rates, terms, closing costs — are processed on your device to compute your results, and are not transmitted to our servers. To show benchmark rates, the app fetches published national averages from FRED, the Federal Reserve's public data service — that request carries nothing you entered. There is no account, no login, and no sign-up. We do not use tracking cookies, and we do not sell or rent information that identifies you. The full policy is on the privacy page.

Which kinds of loan can I analyze?

Five: home, auto, business, credit-card, and personal. Home loans add discount points and escrow prepaids to the cost of the refinance. Credit-card debt is handled differently from the rest — a card has no fixed term, so your current payoff is simulated from the payment you actually make each month. Business-purpose loans are analyzed separately from consumer loans, because different rules apply to them.