Refinance Break-Even Calculator: Is Refinancing Actually Worth It?
Every time mortgage rates drop, the phone calls start. A lender offers you a lower rate, and it sounds like free money. Nobody mentions the part where you’re paying $4,000 to $8,000 in closing costs to get there, or that it takes actual months for that lower payment to earn back what you just spent.
Short version: Refinancing only pays off once your monthly savings add up to more than what you paid in closing costs, and that crossover point is your break-even month. This calculator shows you that exact number, plus what the whole thing costs or saves you over the life of the loan.
How to use this
Pull your current mortgage statement for your loan balance, rate, and remaining years. Then plug in the new rate you’ve been quoted and an estimated closing cost figure, most lenders will give you a Loan Estimate with this number before you commit to anything, and don’t be shy about asking for one in writing.
If your current payment includes PMI or FHA MIP that this refinance would eliminate, check that box, it changes the math significantly, especially if you’re one of the people this calculator was really built for: refinancing out of an FHA loan’s MIP once you’ve built enough equity. If you already know how long you plan to stay in the house, enter that too. The verdict changes completely depending on whether you’re planning to sell in two years or stay for fifteen.
Refinance Break-Even Calculator
See exactly when a refinance pays for itself, and whether that’s before or after you’d move.
Your Current Loan
The New Loan You’re Offered
Break-even Timeline (cash flow only)
Total Cost Comparison (each loan to its own payoff)
Break-even Chart
Assumes closing costs are paid out of pocket, not rolled into the new loan. PMI, if entered, is assumed to apply for the full term entered since actual cancellation timing varies by lender. This is an estimate to guide your conversation with a lender, not a loan offer.
Reading your break-even number
The calculator gives you a straight answer: how many months until the refinance pays for itself, and what happens to your total cost over the life of both loans. Two numbers matter more than the rest:
If your break-even point is shorter than how long you plan to stay, the refinance is worth it. If it's longer, you'd be selling or moving before you ever recoup what you spent. There's no universal "good" break-even number, someone certain they're staying 20 years can justify a slower break-even than someone who might get transferred for work next year.
When this calculator turns up a "no"
Not every refinance is a good idea, even at a lower rate. If you're resetting a loan you're 10 years into back to a fresh 30-year term, your payment might drop, but you could end up paying more total interest over time even with the lower rate, because you're stretching the payoff back out. This calculator's total cost comparison is built to catch exactly that kind of situation, not just the monthly number.
If you're weighing this decision from the buying side rather than already owning, FHA vs. conventional loans walks through the specific MIP situation that sends a lot of FHA borrowers looking at a refinance down the road in the first place. And if you want to see how the new rate changes your payment on its own before running the full break-even math, the mortgage calculator is the faster way to check that in isolation.
Frequently Asked Questions
There's no fixed number, it depends entirely on how long you plan to stay in the home. A 24-month break-even is a great deal if you're staying 10 more years, and a poor one if you might sell next year. Compare your break-even point to your actual timeline, not to a general rule of thumb.
No, it assumes you're paying closing costs out of pocket. Rolling them into the loan instead raises your new balance and monthly payment slightly rather than costing you cash upfront, which changes the break-even math. Ask your lender to show you both versions before deciding.
Because you're extending how long you're paying interest, not just lowering the rate. If you're 10 years into your current loan and refinance into a brand new 30-year term, you add years of payments back onto the loan even though each individual payment is smaller. The total cost comparison in this calculator is built to catch that.
Not necessarily, this calculator assumes it applies for the full term you enter, since actual PMI cancellation depends on your lender, your payment history, and when you cross the required equity threshold. Treat the PMI/MIP figures as a reasonable planning estimate, not an exact number, and confirm the real cancellation terms with your loan servicer.
Run the numbers using your most conservative realistic timeline, the shortest amount of time you might reasonably stay, not your hoped-for outcome. If the refinance still clears break-even under that shorter window, it's a safer bet regardless of what actually happens.