The principal still owed, from your latest mortgage statement.
Lender fees, appraisal, title, recording and any points, paid in cash at closing.
New monthly payment$1,498.88
Monthly savings$261.61
Break-even (months)20
Current monthly payment$1,760.48
Interest remaining on current loan$320,397
Total interest on new loan$289,595
Closing costs$5,000
Lifetime savings (after costs)$25,802
Change in payoff time3 years longer

Closing costs of $5,000 ÷ $261.61 saved per month = 20 months (1.67 years) to break even. Keep the loan to term and you save $25,802 after costs. Part of the lower payment comes from stretching the loan 3 years past your current payoff date. Payments are principal and interest only; taxes and insurance do not change when you refinance.

Compare new loan terms at this rate
New termPaymentMonthly savingsTotal interestLifetime savings
30 years$1,498.88$261.61$289,595$25,802
20 years$1,791.08-$30.59$179,859$135,539
15 years$2,109.64-$349.16$129,736$185,662
10 years$2,775.51-$1,015.03$83,062$232,336

Refinance Calculator · free calculator by CalcWorthy