When does refinancing make sense? Break-even math for 0.5% and 1%

6 min read · LenderMatch Learn

Refinancing makes sense when your monthly savings pay back the closing costs before you sell or refinance again, and the new loan does not add more total interest than it saves. To check, divide your closing costs by your monthly savings. That gives your break-even point in months.

There is no magic rate drop. A 1% drop can pay back in about three years, and a 0.5% drop can take more than five, as the examples below show. The quote you get matters as much as the market, so it pays to compare more than one lender before you decide.

How to calculate your refinance break-even point

Freddie Mac’s test is simple: take the total cost of the refinance and divide it by your monthly savings.

Closing costs ÷ monthly savings = months to break even

1. Find your closing costs. Freddie Mac says you can expect to spend 3% to 6% of the loan principal to refinance. Your Loan Estimate shows the estimated total.
2. Find your monthly savings. Subtract the new principal and interest payment from your current one.
3. Divide. The answer is how many months the new loan needs to earn back what you paid.
4. Compare it to your plans. Freddie Mac’s own example: if you might move in two years but need three to recoup the cost, the refinance probably does not make financial sense.

Our refinance break-even calculator does this math for you, including total interest.

Is it worth refinancing for 1 percent?

Here is a worked example. You owe $300,000 at 8.40% with 28 years left. A lender quotes a new 30-year loan at 7.40%, the Freddie Mac average for the week of October 15, 2026. Closing costs are $9,000, the low end of Freddie Mac’s 3% to 6% range.

With a 1% drop, you break even in about three years. If you stay longer than that, each month after is money saved. If closing costs were at the 6% end ($18,000), break-even would stretch to about 73 months, so the fee quote matters as much as the rate.

Is it worth refinancing for .5 percent?

Same loan, but your current rate is 7.90%. The half-point drop saves about $143 a month, so $9,000 in costs takes about 63 months, a little over five years, to recover.

That can still be worth it if you expect to stay much longer. The size of the loan matters too: on a $150,000 balance, the same half-point drop saves only about $71 a month, so a refinance costing $4,500 (also 3%) still takes about 63 months. If some of your costs are flat fees rather than a percentage of the loan, a smaller balance takes even longer to break even.

The term-reset trap: does refinancing restart your loan?

Yes. A refinance is a new loan with a new term, and this is where a lower payment can cost you more. In the 0.5% example, you have 28 years left on the 7.90% loan. Swap it for a fresh 30-year loan and you add two years of payments.

• Interest left on your current loan (28 years at 7.90%): about $445,900.
• Interest on the new loan (30 years at 7.40%): about $447,800.

The rate is lower and the payment drops $143, yet you would pay about $1,900 more in total interest, plus $9,000 in closing costs. The break-even formula alone would not show this, which is why it helps to compare lifetime interest too.

Two common fixes:

• Keep paying your old amount. If you keep paying $2,220 a month on the new 7.40% loan, it pays off in about 24 years and 4 months, with total interest of about $347,100. First confirm the new loan has no prepayment penalty; the CFPB notes some loans charge one.
• Pick a shorter term. A 15-year fixed averaged 6.71% the week of October 15, 2026 (Freddie Mac). On $300,000 that is about $2,648 a month, but total interest of about $176,700. Freddie Mac notes a shorter term builds equity faster and costs less in total interest.

When refinancing makes sense for reasons other than rate

• Ending FHA mortgage insurance. Under current FHA rules, loans with terms over 15 years that start above 90% loan-to-value pay annual mortgage insurance for the full mortgage term (HUD Mortgagee Letter 2023-05). At the 0.55% rate that applies above 95% LTV, a $280,000 balance costs about $128 a month. Refinancing into a conventional loan can end that charge, though the CFPB notes conventional refinances usually require private mortgage insurance when your equity is under 20%.
• Moving from an adjustable rate to a fixed rate. Freddie Mac lists the stability of a fixed rate as a reason to refinance, even when the rate is not lower.
• Shortening your term to own your home sooner and pay less total interest.
• Taking cash out. If your current rate is at or above today’s market, a cash-out refinance vs a HELOC comparison is worth running. If your rate is low, a HELOC may let you keep it.

Freddie Mac notes the simple break-even test does not fit cash-out refinances or refinances into a shorter term. For those, compare total interest and total cost.

When refinancing does not make sense

• You expect to move or sell before you reach the break-even month.
• The new term adds years and more total interest than the rate saves.
• Your current loan has a prepayment penalty that wipes out the savings.
• A “no closing cost” offer hides the cost in a higher rate or a bigger balance (CFPB).

Frequently asked questions

Is it worth refinancing for 1 percent?

Often, but not automatically. In our example, dropping from 8.40% to 7.40% on a $300,000 balance saves about $246 a month, so $9,000 in closing costs pays back in about 37 months. If you will stay in the home longer than your break-even point, a 1% drop usually pays off. If you might move sooner, it may not.

Is it worth refinancing for .5 percent?

Sometimes. A half-point drop saves less each month, so it takes longer to earn back the closing costs: about 63 months in our $300,000 example. It works best on larger balances, with low closing costs, and when you plan to stay well past the break-even point.

How do you calculate the refinance break-even point?

Divide your total refinancing costs by your monthly savings. The result is the number of months it takes to recover the costs. Freddie Mac notes this simple test does not work for cash-out refinances or for refinancing into a shorter term; for those, compare total interest instead.

Does refinancing restart your loan?

Yes. A refinance is a brand-new loan with a new term. If you have 28 years left and take a new 30-year loan, you add two years of payments, which can raise the total interest you pay even at a lower rate. Choosing a shorter term, or paying your old payment amount on the new loan, avoids this.

Is there such a thing as a no-closing-cost refinance?

Lenders may advertise one, but the CFPB explains that the costs are usually covered by a higher interest rate or added to your loan balance. A higher rate means you pay more over time; a higher balance raises your payment and reduces your equity.

Should I refinance my mortgage now or wait?

Nobody can reliably predict rates. A practical approach is to run the break-even math on a real quote today. If you recover the costs well before you expect to move or sell, waiting is a bet that rates fall further. If the math does not work yet, you can rerun it whenever rates change.

Worried that comparing quotes will hurt your score? Read does rate shopping hurt your credit, or see how lender matching works.

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