Mortgage Refinance Break-Even Calculator

Divide the total closing costs by the monthly saving, where the saving is your current principal and interest payment minus the payment on the proposed loan. The result is the number of months of lower payments needed before the accumulated saving equals what the refinance cost. This page rounds up to a whole month, because a partial month has not finished paying anything back, and it ignores what you could have earned on the fees had you invested them instead.

Then there is no break-even point, and this calculator says so in words instead of printing a zero or a negative month count. It usually happens when the new term is shorter than the years you have left, so the balance is compressed into fewer payments, or when the rate improvement is too small to offset that compression. A shorter term is not necessarily a bad deal, but it is not a cash-flow saving, so break-even is the wrong test for it.

Because resetting the term adds years of interest. Interest accrues on the outstanding balance every month it stays outstanding, so replacing twenty-two remaining years with a fresh thirty-year loan adds eight more years of it. That addition often exceeds everything the lower rate saved. The result on this page shows the interest under each scenario separately and the difference as a signed figure, so a negative saving is visible rather than hidden behind a smaller monthly number.

Yes, enter them as closing costs. Rolling the fees into the balance does not make them disappear; it borrows them at the mortgage rate for the whole term, which costs more than paying them at settlement, not less. This calculator assumes the new loan equals your current balance and the costs are paid up front, so that the break-even figure can be attributed to one variable at a time. Treat a rolled-in quote as slightly optimistic here.

It is the same deal priced differently. The lender covers the fees and recovers them through a higher interest rate over the life of the loan, so your break-even is immediate but your monthly saving is smaller and your lifetime interest is higher. Run the calculation both ways: once with zero costs at the higher quoted rate, once with the real costs at the lower rate, and compare the lifetime interest figures over the years you actually expect to stay.

Longer than the break-even point, with room to spare. If the calculation says thirty-one months and you might move in three years, the margin is too thin to be worth the disruption, since a sale or another refinance stops the clock and any unrealised months of saving simply never happen. As a rule of thumb, look for a break-even comfortably shorter than half the time you confidently expect to keep both the house and the loan.