The formulas
- Payment = L x r / (1 - (1 + r)^-n) for the old and the new loan
- Break-even months = costs paid at closing / (old payment - new payment)
How it works
A refinance is worth it only if you keep the loan long enough for the monthly savings to repay the closing costs. Divide costs by the monthly saving to find that month.
A longer new term lowers the payment but can raise total interest, so compare the two interest rows as well. When costs are rolled into the loan, nothing is paid at closing and the savings begin immediately, but the loan is larger. Taxes and the time value of money are not included.
Illustrative figures only. Check the result against your firm's methodology before relying on it.
Common questions
What if savings are negative?
Then the new payment is higher and there is no break-even.
Should I count escrow?
No. Taxes and insurance are the same either way. Enter the loan balance only.
What about points?
Include points in the closing costs.
Formulas on this page are the standard definitions.
Runs in your browser. The figures you type are not sent to CORAA or stored. Check the result against your firm's methodology before relying on it.