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By Alex Diaz · How we calculate this
Refinancing a mortgage typically costs 2% to 5% of the loan amount in closing costs, and most lenders won't waive them entirely without folding them into a higher rate. Because that's a one-time cost rather than a recurring bill, your estimate weighs it against roughly three months of your budget rather than treating it like a new monthly payment.
These key factors affect mortgage refinance affordability
Income and expenses
Closing costs on a refinance come out of pocket, or get rolled into the new loan, so what's left after your regular bills and debt matters here just as it would for any other one-time cost.
Break-even period
The real question with a refinance isn't just whether you can cover the closing costs. It's how many months of lower payments it takes to recoup them. Divide your closing costs by your expected monthly savings to get a rough break-even point, and be skeptical of a refinance if you plan to move or pay off the loan before you'd reach it.
Rate improvement
A refinance generally only pays off with a meaningful rate reduction. A fraction of a percentage point often isn't enough to justify the closing costs, so compare your current rate against real current offers rather than the rate you remember from when you first bought.
Cash-out vs. rate-and-term
A rate-and-term refinance just replaces your loan with better terms. A cash-out refinance borrows against your equity and increases your loan balance instead, and the two have very different effects on your long-term payment and total interest paid.
Resetting your amortization clock
Refinancing into a new 30-year loan restarts your amortization schedule, even if you were five or ten years into the original mortgage. A lower rate can still save money overall, but stretching back out to a full 30 years means more of each new payment goes toward interest again in the early years. Matching the new term to how many years you actually have left, or paying extra toward principal, keeps the reset from quietly costing you more in total interest than staying put would have.
How to use your results
- Get a real closing cost estimate from a lender rather than a rough guess.
- Calculate your break-even point by dividing closing costs by your expected monthly savings.
- Include your existing debt for a realistic picture of what's actually left to spend on closing costs.
Ways to make a refinance more worthwhile
- Shop multiple lenders, since closing costs and rates for the same refinance can vary meaningfully.
- Ask about a no-closing-cost refinance if you plan to move before you'd otherwise break even.
- Time the refinance around a real rate drop rather than a marginal improvement.
- Improve your credit score before applying, even by a modest amount, to unlock a better rate.
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