The simple formula
If you pay closing costs in cash and the new principal-and-interest payment is lower:
Break-even months = cash closing costs ÷ monthly payment savings
Example: $6,400 in costs and $200 less per month is 32 months. Stay past that, and the refinance has repaid its own fee. Move earlier, and you spent $6,400 to enjoy a cheaper payment for too little time.
Use principal and interest (and PMI if it changes). Property tax and homeowners insurance usually do not belong in this subtraction — they are not created by the refinance.
Where the simple formula breaks
- Costs rolled into the loan. Cash break-even is zero because you did not write a check. You will pay interest on those fees for years. The stay-horizon comparison is the honest test.
- Shorter term. A 15-year refinance can raise the payment and still save a large amount of interest. Break-even on cash may look terrible while lifetime interest looks excellent.
- Cash-out. The new payment is higher because the balance is higher. You cannot treat that as a failed rate refinance; you are also borrowing cash. See the cash-out guide.
- PMI removal. Dropping $150 a month of mortgage insurance can recoup costs faster than the rate change alone.
Stay-horizon net savings
hrc.io’s calculator walks both loans month by month for the years you say you will keep the home. It adds payments, remaining balances (what you would pay off at sale), and cash at closing, then subtracts cash-out proceeds. The result is a single number: ahead or behind if your plan holds.
That number is the one to trust when the payment goes up, when costs are financed, or when you are not sure you will keep a 30-year loan for 30 years.
| If you plan to | Lean on |
|---|---|
| Keep the house 2–4 years | Cash break-even first. If it exceeds your stay, skip or seek a lender credit. |
| Keep the house 5–10 years | Stay-horizon net, then lifetime interest. |
| Stay for the full term | Lifetime interest and payoff date. A shorter term often wins. |
Worked examples with the same figures
Cash fees, lower payment. On a refinance near $320,000, you pay $6,400 at closing and save $200 a month on principal and interest. Break-even is 32 months. At month 32 you have recovered the fee in payment savings alone; every month after that is net gain on that simple metric. If you sell at month 24, you have only $4,800 of payment savings against $6,400 of costs — you are behind unless the remaining-balance comparison somehow favors you (it usually does not enough to erase a short stay).
Same costs, costs rolled in. You finance the $6,400. Cash break-even is meaningless. The new balance is higher, so interest runs on the fee. Use stay-horizon net: compare total payments plus remaining balance under the old loan versus the new loan over, say, five years, and include the fact that you did not write a check at closing. If the financed deal still wins at your horizon, fine. If it only wins because you ignored the larger balance, it is not a win.
PMI drops. Suppose the rate cut alone saves $80 a month, but dropping PMI saves another $120, for $200 total. The same $6,400 fee still breaks even in 32 months — but without the PMI change you would need 80 months. Equity and loan program switches can matter as much as the rate.
Pitfalls when reading break-even
- Using the full escrow payment (PITI) instead of principal, interest, and PMI. Taxes and insurance muddy the refinance signal.
- Forgetting that a longer new term can lower the payment while raising lifetime interest. Break-even looks great; the amortization schedule does not.
- Comparing a cash-out payment to the old payment and calling the refinance a failure. You borrowed more money; price the cash separately.
- Assuming “no closing cost” has infinite break-even advantage. You pay through a higher rate for as long as you keep the loan. Model it.
- Planning to refinance again in eighteen months while using a five-year break-even as comfort. Stacked fees erase thin margins.
How to use the calculator for break-even
- Enter current and new loan details, including estimated closing costs.
- Leave “roll costs into the loan” unchecked first so cash break-even is readable.
- Note the break-even months the tool shows, then set your stay horizon to that many months and to your real expected sale year.
- Toggle rolling costs in and compare stay-horizon net — that is the check when you will not write a check at closing.
- If you have two Loan Estimates, keep the stay horizon fixed and swap only the new rate, points, and fees.
Points, credits, and the break-even you actually face
Discount points paid in cash raise the numerator of the simple formula. A lender credit lowers it — sometimes to zero — while the rate rises. Neither is automatically better. On a $320,000 loan, one point is $3,200. If that point buys a lasting rate cut and you will keep the loan well past break-even, it can pay. If you will sell in two years, the same point is often wasted cash.
When you compare Loan Estimates, compute break-even for each quote with that quote’s cash due at closing and that quote’s principal-and-interest (and PMI) payment. Do not mix Lender A’s fees with Lender B’s rate. The calculator is built for side-by-side swaps: change rate, points, and costs together, keep the stay horizon fixed, and read both cash break-even and stay-horizon net.
If PMI will drop after the refinance, include that monthly change in the savings side. If PMI will appear because cash-out or a light appraisal pushes loan-to-value above 80%, include that cost too. Break-even that ignores insurance is incomplete.
Related questions
Still unsure whether this is the right year to act? Read when to refinance. For what happens at closing mechanically, see how refinancing works. Fee ranges and no-cost pricing live on the costs page.
These examples are planning estimates. Confirm every fee and payment on a Loan Estimate. hrc.io is not a lender and does not take applications; numbers you enter stay in your browser.
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