Mortgage Refinance Calculator

Your Current Loan
$
What you still owe
$
Principal & interest only
%
yrs
Years left on current loan
Your New Refinance Loan
%
Rate you're refinancing at
%
Typically 2%–5% of loan balance
Rolling in costs raises your balance
New Monthly Payment
Monthly Savings
Break-Even Point
Lifetime Interest Savings
Current Loan New Loan Difference
Monthly payment
Interest rate
Loan term remaining
Total interest paid
Total cost (principal + interest)
Closing costs

Break-Even Analysis

Should You Refinance Your Mortgage?

Refinancing replaces your existing mortgage with a new loan — typically to get a lower interest rate, reduce your monthly payment, shorten your loan term, or switch from an adjustable-rate to a fixed-rate mortgage. This calculator tells you the three numbers that matter most: your new monthly payment, your monthly savings, and the break-even point.

The Break-Even Point

The break-even point is how many months it takes for your cumulative monthly savings to exceed the closing costs you paid to refinance. If you plan to stay in the home longer than the break-even period, refinancing is likely worth it. If you're planning to sell or move before then, the upfront costs may outweigh the savings.

Example: If closing costs are $6,400 and you save $200/month, your break-even is 32 months (about 2.7 years). If you stay 5+ years, you come out ahead by thousands.

When Refinancing Makes Sense

  • Your new rate is at least 0.5%–1% lower than your current rate
  • You plan to stay in the home past the break-even point
  • Your credit score has improved since your original loan
  • You want to switch from an ARM to a fixed-rate loan for stability
  • You want to shorten your term (e.g., 30-year to 15-year) to pay off faster

When It Might Not Make Sense

  • You're planning to sell or move within 2–3 years
  • You've already paid most of the interest on your current loan (later years of a mortgage are mostly principal)
  • Closing costs are very high relative to your monthly savings
  • Your credit score has dropped since your original loan
  • You'd be extending a 15-year loan back to 30 years, dramatically increasing lifetime interest

Financing Closing Costs

You can roll closing costs into your new loan balance rather than paying them upfront. This reduces out-of-pocket cost but increases the loan amount, raises your monthly payment slightly, and means you're paying interest on the closing costs over the life of the loan. Our calculator shows both scenarios — toggle "Finance closing costs?" above to compare.

Frequently Asked Questions

How much do mortgage refinance closing costs typically run?
Refinance closing costs typically range from 2%–5% of the loan balance. On a $300,000 loan, that's $6,000–$15,000. Major components include origination fees (0.5%–1%), appraisal ($300–$700), title insurance ($500–$1,500), and recording fees. Some lenders offer "no-closing-cost" refinances where costs are rolled into the rate — you pay a slightly higher interest rate instead of upfront fees.
How much equity do I need to refinance?
Most conventional lenders require at least 20% equity (80% LTV) to refinance without PMI. You can often refinance with less — down to 5% equity — but you'll pay PMI on the new loan, which may offset your savings. FHA streamline refinances have fewer equity requirements but require you to already have an FHA loan.
Does refinancing hurt my credit score?
Refinancing causes a temporary dip of 5–10 points due to the hard credit inquiry, and opening a new account lowers your average account age. However, if you rate-shop within a 14–45 day window, multiple mortgage inquiries typically count as a single inquiry for credit-scoring purposes. The impact is usually minor and temporary — most scores recover within a few months.
What's a cash-out refinance?
A cash-out refinance replaces your mortgage with a larger loan and gives you the difference in cash. For example, if you owe $200,000 and your home is worth $350,000, you might refinance for $250,000 and pocket $50,000 to fund home improvements, pay off high-interest debt, or cover other expenses. This calculator covers rate-and-term refinancing — for cash-out scenarios, also check our HELOC Calculator.
Should I refinance to a 15-year or 30-year loan?
A 15-year refinance typically carries a lower rate (0.5%–0.75% less than 30-year) and cuts your total interest dramatically — but monthly payments are substantially higher. A 30-year refinance gives you the lowest monthly payment and maximum flexibility, but you'll pay significantly more interest over the life of the loan. If you can comfortably afford the 15-year payment, the interest savings are usually compelling. Use our Mortgage Calculator to compare both term options side by side.