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Refinance Break-Even Calculator

Find how many months it takes for a remortgage to repay its own fees — the only number that decides whether it is worth doing.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax

Break-even point

17.11 months to break even

High confidence

Arithmetic on the figures you enter. Not a lending decision, not an offer, and not regulated financial advice — speak to a qualified adviser before acting on it.

Current payment
1425.88
New payment
1250.56
Monthly saving
175.32
Saving over the remaining term
43283.55

At the values currently entered, the break-even point works out to 17.1 months to break even. Note that outstanding balance and total switching cost sit at the edge of the range this calculator was checked against, so treat the output as indicative rather than settled. Figures are shown for United States, where IRC 2024 is the governing residential reference; switch the market above if you are building elsewhere.

Add the equipment this sizes

This result is a specification — 17.112 months to break even — not a quantity. Put the thing it sizes into your project: how many, what you call it, and your supplier’s price.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Break-even months = total switching cost ÷ monthly payment saving. Standard consumer-finance comparison method.
  • Fees vary widely by lender and market; all are user inputs here

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Frequently asked questions

What break-even period is short enough?
Comfortably shorter than the time you expect to keep the mortgage, and shorter than any new fixed period. Breaking even in eighteen months on a five-year fix is clearly worth doing; breaking even in four years on a two-year fix means you pay the fees and leave before the saving arrives.
Should I add the fees to the new loan?
It preserves your cash and costs more. A 3,000 fee added to a 25-year mortgage at 5% costs roughly 5,300 by the end. If you can pay it up front without stretching, do — and if you cannot, that is worth knowing before you commit to the new payment.
Why compare over the same remaining term?
Because a longer term lowers the monthly payment on its own, regardless of rate. Comparing a 22-year balance against a fresh 25-year deal makes any rate look good, and hides the extra three years of interest you have just agreed to.
Does an early repayment charge kill the deal?
Often, and it is the item people leave out. Include it in the switching cost — a charge of a few percent on the balance can be five figures, which pushes the break-even years out rather than months. Many borrowers are better waiting until the charge steps down or expires.