Financial term · Reviewed August 17, 2026
Refinance
Refinance: Replacing an existing loan with a new one, resetting the term and incurring closing costs. The only one of prepay, recast and refinance that can change the rate. The Mortgage Refinance Calculator returns this figure from break-even months = net refinance costs ÷ monthly payment savings. At that calculator’s documented worked-example inputs the break-even time is 33.2 months; holding every other input steady, moving current loan balance from $248,000 to $372,000 moves it from 27.7 months to 41.5 months, a spread of 13.8 months.
Of the three ways to change a loan after closing, refinancing is the only one that can change the rate. It is also the only one that resets the clock and charges closing costs to do it. So a lower payment can easily coincide with paying more overall.
| Term | Refinance |
|---|---|
| Category | Mortgage & Home |
| How it is found | Break-even months = net refinance costs ÷ monthly payment savings |
| Worked example | Break-even time: 33.2 months |
| Computed by | Mortgage Refinance Calculator |
| Related terms | 8 defined in this glossary |
Before you rely on it
What to check
Compare total remaining interest under both loans, not the two monthly payments.
The common error
Where people go wrong with refinance
Refinancing into a fresh thirty-year term eight years into a mortgage. The payment drops, the finish line moves back eight years, and the total interest often rises despite a lower rate.
Worked through
Refinance in plain numbers
A homeowner has a $300,000 balance and 30 years left at 7%, paying $1,996 a month; a new 30-year loan at 6% has a payment of $1,799, a saving of $197. Closing costs are $6,000. Divide the cost by the monthly saving: $6,000 ÷ $197, and you break even in about 30 months. Stay longer than that and the refinance pays. Move before then and it loses. There is a catch. Restarting a 30-year clock after some years gives up progress on the old schedule, so total interest can rise even as the payment falls; ask for the total cost across both loans, not only the monthly figure.
Easily confused
Refinance and its neighbours
A refinance is not a recast, a modification or a home equity loan; it replaces the existing loan with a new one, often at a different rate and term. A recast keeps the loan and reworks the payment. A modification changes terms for a borrower in difficulty. A cash-out refinance borrows more than you owe and gives you the difference, and a home equity loan adds a second debt beside the first. Rate-and-term refinances change only the rate or term. Each has different costs and risks.
In real decisions
Where refinance turns up
Borrowers refinance to lower their rate, shorten the term, switch from adjustable to fixed or extract equity; businesses and landlords refinance property loans. Student loan borrowers refinance to combine or reduce rates, sometimes giving up protections; the decision depends on rate savings, costs, time in the home and total interest. A break-even calculator shows the time to recover the costs. Shopping several lenders compares closing costs and rates.
Know the edges
Where refinance stops being reliable
Closing costs, appraisals and credit requirements matter. Rates can change between quote and lock. Resetting the term increases total interest unless you keep paying at the old schedule. Refinancing federal student loans into private ones removes federal benefits. Points and fees affect the true cost. Compare offers using APR and total cost, and be honest about how long you will keep the loan.
Quick answers
What people ask about refinance
When does refinancing make sense? When the savings recover the costs within the time you expect to keep the loan, or when you need to change the loan type or term. Compare the total cost, not just the monthly payment.
Does refinancing hurt my credit score? A new application creates an inquiry and a new account, which can lower a score slightly for a short time. Paying on time restores it.
What are closing costs on a refinance? Fees for appraisal, title, lender charges and taxes can total a few thousand dollars. Ask for a loan estimate and compare several lenders.
Put it to work
How refinance is calculated
At the mortgage refinance calculator’s worked-example inputs, break-even time is 33.2 months, monthly payment savings is $196. Moving current loan balance from $248,000 to $372,000 moves that first figure from 27.7 months to 41.5 months.
Open the Mortgage Refinance Calculator →
Taxes, insurance, HOA charges, mortgage insurance and closing costs vary by property, lender and location.
Related vocabulary
Terms used alongside this one
Keep reading
Nearby in the glossary
- ← Recast
- Required minimum distribution (RMD) →
- All 174 defined termsThe complete Free Calculators Online financial glossary.