Refinance Break-Even Calculator

How this is calculated

THE BREAK-EVEN IS THE EASY PART: closing costs divided by the monthly saving. If it takes longer than you expect to stay, the refinance loses money no matter how good the rate looks. ⚠️ BUT A LOWER PAYMENT IS NOT AUTOMATICALLY A SAVING, AND THIS IS THE TRAP THE BRICK EXISTS FOR. Refinancing resets the clock. Rolling a loan with 22 years left into a fresh 30-year term lowers the monthly payment partly because the rate improved and partly because you have simply spread the debt over eight more years. On the defaults here that trade LOWERS the payment by over $400 a month and RAISES total interest by about $48,600 - or $53,100 once the closing costs are counted, which is what the output shows. Both figures are true at once, and only one of them appears on the offer. WHICH MEANS YOU HAVE TO DECIDE WHICH PROBLEM YOU ARE SOLVING. If cash flow is tight, a lower payment is genuinely valuable and the extra lifetime interest may be a price worth paying deliberately. If the goal is to pay less overall, extending the term usually defeats it. What is not defensible is doing the second while believing you did the first. COMPARE LIKE FOR LIKE BY MATCHING THE TERM. Set the new term to the months remaining on your current loan and you isolate the effect of the RATE alone. That is the honest comparison, and it is one input change away. Anything the refinance saves after that is real. ⚠️ CLOSING COSTS ROLLED INTO THE LOAN ARE STILL PAID, just invisibly and with interest. If your costs are being added to the balance rather than paid up front, the payment you have been quoted already reflects that - and the break-even calculation here assumes you pay them separately. Rolling them in makes the break-even longer than it looks, not shorter. THE PAYMENT MATHS IS PRINCIPAL AND INTEREST ONLY. Property taxes, insurance and any mortgage insurance are not included on either side, because they are largely unchanged by a refinance and including them would obscure the comparison. Your actual bill will be higher than both figures shown. AND IT ASSUMES YOU KEEP THE LOAN. Selling, moving or refinancing again before the break-even means the closing costs were never recovered. Most people move sooner than they expect when they sign. GENERAL INFORMATION, NOT FINANCIAL ADVICE. Rates, fees, tax treatment and what you qualify for vary enormously. Talk to a qualified adviser or broker before committing.

Common questions

How is the break-even worked out?

Closing costs divided by the monthly saving — so if a refinance costs $4,500 and saves $435 a month, you are square after about ten months and ahead from then on. The figure that makes it meaningful is how long you actually keep the loan. Selling, moving or refinancing again before that point means the costs were never recovered, and most people move sooner than they expect when they sign. The tool reports the net position over the period you say you will stay, which is the more honest framing than the break-even month alone.

Why does a lower payment sometimes cost more?

Because refinancing resets the clock, and a lower payment comes partly from a better rate and partly from spreading the debt over more years. Rolling a loan with 22 years left into a fresh 30-year term on the default figures lowers the payment by over $400 a month and raises total interest by about $48,600, or $53,100 once closing costs are counted. Both are true simultaneously, and only the first one appears on the offer you are shown. That is not a scam — it is the arithmetic of a longer term — but it is the single most important thing to check before signing.

How do I compare fairly?

Set the new term equal to the months remaining on your current loan. That removes the extra years from the comparison and isolates the effect of the RATE alone, which is the honest question: at the same finishing line, is the new loan cheaper? Anything it saves under those conditions is real. It is one input change away, and it is worth doing before looking at any other number on the page — if the refinance only wins by extending the term, you have learned something important about the offer.

Which problem am I actually solving?

That is the question the tool is really asking, and it has two legitimate answers. If cash flow is tight, a lower monthly payment has genuine value and the extra lifetime interest may be a price worth paying knowingly — buying breathing room is a real reason. If the goal is to pay less overall, extending the term usually defeats it. What is not defensible is doing the second while believing you did the first, which is what happens when the only figure examined is the monthly payment.

What if the closing costs are rolled into the loan?

They are still paid — just invisibly, and with interest on top for the life of the loan. This calculation assumes you pay them separately, so if yours are being added to the balance the real break-even is longer than shown rather than shorter, and the quoted payment already reflects the larger balance. Rolling costs in is sometimes the only practical option and it is not automatically wrong, but it should be recognised as borrowing more rather than as avoiding a cost.

Does this include taxes and insurance?

No — the payments here are principal and interest only, on both sides. Property taxes, insurance and any mortgage insurance are largely unchanged by a refinance, and including them would inflate both figures while leaving the difference the same, which obscures the comparison rather than improving it. Your actual monthly bill will be higher than either number shown. If your mortgage insurance would be removed by the refinance, that is a genuine additional saving this tool does not capture, and it can be substantial.

What else should I check before committing?

Whether the new loan has a prepayment penalty, whether your current one does, and what the fees actually consist of — some are negotiable and some are not. Also whether you will realistically stay past the break-even, since that assumption carries the whole case. Rates, fees, tax treatment and what you qualify for vary enormously by lender and jurisdiction, so this is general information rather than advice. Before committing to something this size, talk it through with a qualified adviser or a broker who can see the whole picture.

Take it further with AI

Copy this into ChatGPT or Claude with your own numbers filled in. It hands over the figures this calculator worked out, so the answer is built on real arithmetic instead of a guess.

I used the Refinance Break-Even Calculator at https://www.bfcbrilliance.com/tools/refinance-break-even-calculator.

What I entered:
- Balance you would refinance ($): ___
- Your current rate (%): ___
- Months left on your current loan (months): ___
- The new rate (%): ___
- New loan term (months): ___
- Closing costs ($): ___
- How long you expect to keep the loan (months): ___

What it calculated:
- Months to recoup the closing costs: ___
- Payment now: ___
- Payment after refinancing: ___
- Monthly saving: ___
- Net gain over the time you stay: ___

Use those figures as given — they are already worked out, so please don't recalculate or estimate your own. Help me turn them into a plan: what to buy or do, in what order, roughly what it should cost, and the mistakes people most often make with this job.

Keep this general and do not give financial advice — flag where I should talk to a qualified adviser.

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