Mortgage Refinance Break-Even Calculator

A break-even under two years is considered attractive—your monthly savings quickly offset closing costs. Beyond five years, many borrowers grow skeptical because the median homeowner moves, sells, or refinances again within that window, and you lose the refinance benefit if you exit early. The best threshold is your personal horizon: how long do you realistically plan to keep this loan? Compare that timeline directly to the break-even months. If you plan to stay longer than break-even, the refinance puts you ahead; if not, it likely costs money.

No—it is a financing choice, not a cost elimination. Rolling closing costs into the loan removes the upfront cash requirement, but you now borrow those costs at your mortgage rate and repay them with interest over the remaining term. If closing costs are $6,500 and your new rate is 5%, you will repay roughly $15,000–20,000 in principal and interest on those costs alone. Check the *Lifetime interest difference* output in both scenarios: paying cash typically lowers total interest paid, while rolling in costs raises it, even with a lower payment.

Shorter-term mortgages (15 years instead of 30) raise your monthly payment but cut total interest paid dramatically—potentially by tens of thousands of dollars over the loan life. The monthly payment increase may be modest due to the lower rate on a refinance. If your goal is lifetime wealth-building and you can afford the higher payment, a shorter term is powerful. But if cash flow matters more, stick with 30 years; you lose the short-term benefit but keep your monthly flexibility. Check the *Lifetime interest difference* figure in your calculations to see the trade-off in dollars.

This calculator reports principal and interest (P&I) only, which isolates the effect of the rate and term change. Lender quotes include additional escrow items that are separate: property taxes, homeowners insurance, HOA or condo fees, and if applicable, private mortgage insurance (PMI). These items do not typically change with a refinance, so isolating the P&I figure lets you see the true savings from the refinance itself. Add your escrow amounts to the P&I figures to compare against your lender's total monthly payment.

There is no one-size-fits-all threshold; it depends entirely on your balance and closing costs. A large mortgage balance—say $500,000—can justify a 0.25% rate drop because the monthly savings on a large principal is substantial. A small balance—say $100,000—may require a full point or more to offset fixed closing costs. The old '1% rule of thumb' is outdated and too simplistic. Enter your actual numbers into this calculator: balance, rate, closing costs, and timeline. If break-even is less than your expected holding period, the refinance pencils out.

Yes, absolutely. When you refinance, you obtain a completely new loan, which starts a fresh 30-year (or 15-year, etc.) amortization schedule. Early payments on the new loan are again heavily weighted toward interest rather than principal. This is why refinancing into a longer term—say, extending from 26 years remaining to a new 30-year term—can actually increase total lifetime interest paid despite the lower rate. The benefit of the lower rate must overcome both the fresh amortization schedule and any extended payoff timeline.

Yes, significantly. Discount points (where you pay upfront to buy down your rate) are a separate refinance decision embedded in the larger decision. Each point typically costs 1% of the loan amount and reduces your rate by 0.25%. Include point costs in the *Closing costs* field above. Buying points increases your upfront cash outlay, which pushes break-even later in time, but it lowers your ongoing payment, which improves long-run interest savings. The break-even on points alone can be 5–7 years, so evaluate both the total closing cost figure and the lifetime interest savings together.