Refinance

Mortgage Refinance Calculator

Compare your current loan against a refinance scenario, see your break-even point, estimate net savings over your planned stay, and check whether a term reset or cash-out changes the decision.

Calculate Review Method Get Report

Break-even

Months to recover costs

Term reset

Shows long-run tradeoff

Cash-out

Optional scenario

What you get

A refinance verdict backed by the math

Compare current and new payments, break-even months, net savings over your expected stay, and the lifetime-interest tradeoff before you decide to refinance.

Current payment vs new payment

Break-even timeline

Net savings over planned stay

Lifetime interest comparison

Optional cash-out scenario

Your current loan

Remaining balance

$320,000

Current interest rate

7.25%

Years remaining on loan

22 years

New loan terms

New interest rate

6.5%

New loan term

Closing costs

$4,800

Plan to stay in home

7 years

Cash-out refinanceInclude cash-out amount

Get my refinance report

Strong — refinance now

Break-even in 12 months. Net savings over your 7-year stay: $29,291.

✓

Monthly savings

$406

Break-even

12 mo

Net savings (stay)

$29,291

Lifetime interest saved

-$87,029

Monthly payment comparison

Current payment

$2,428

7.25% · 22 yrs left

New payment

$2,023

6.5% · 30-yr term

Current100%

New83%

Total interest — current path

$321,113

Total interest — new loan

$408,142

Cumulative savings over time

Savings start negative because of closing costs, then climb as monthly savings add up.

Cumulative savingsBreak-even line ($0)Your planned stay

▲ Your planned stay (7 years)

Methodology

How to calculate your refinance break-even point

The core refinance question is simple: if you spend money to replace your current mortgage, how long does it take for the new payment to earn that money back? That is the purpose of break-even analysis. Many borrowers stop at “the new rate is lower,” but a lower rate alone does not tell you whether the refinance is smart. The real test is whether the monthly savings are large enough to recover closing costs before you sell the home, move, refinance again, or otherwise stop benefiting from the new loan.

This refinance calculator starts with principal and interest because that is the part of the payment that changes directly when you replace one mortgage with another. We take your remaining balance, current interest rate, and years remaining on the current loan, then compare that payment with a new refinance payment based on the new rate, new term, and any optional cash-out amount. From there, the monthly savings are simply the difference between the old payment and the new one. If your current payment is $2,250 and the refinance payment is $2,010, the monthly savings are $240.

Break-even comes next. Closing costs are divided by monthly savings to estimate how many months it takes to recover the upfront cost. If you spend $4,800 on fees and save $240 per month, break-even is about 20 months. Before month 20, the refinance is still behind. After month 20, every additional month of savings is true net gain. That is why the “how long you plan to stay” input matters so much. It converts refinance math from a generic article answer into a real-life decision tied to your personal timeline.

A strong refinance decision usually has three traits at the same time. First, the new payment is actually lower. Second, break-even arrives comfortably before your planned move date. Third, the lifetime interest tradeoff is still reasonable for your goals. Some homeowners happily accept a longer amortization period because short-term payment relief matters most. Others care more about paying the home off faster and will only refinance if the shorter term still fits their monthly budget. The calculator surfaces both sides so you can judge the decision in context rather than chasing a low rate in isolation.

That is also why the chart starts below zero. Refinancing is not free on day one. You begin in a negative position because of closing costs. The line crosses zero only after enough months of savings have accumulated to recover those fees. The planned-stay marker makes the decision visual: if your move date falls while the line is still below zero, refinancing is probably not worth it. If the marker lands well above zero, the refinance is doing its job. For a deeper walkthrough, you can also compare this page with our refinance break-even guide and then save your scenario through the report form below.

Break-even months

Closing costs divided by monthly savings. If savings are negative, break-even never arrives.

Net savings over stay

Monthly savings across your expected holding period, minus closing costs paid today.

Lifetime interest

Total remaining interest on the current path versus total interest on the new loan.

Cash-out impact

Optional cash-out increases the new balance so you can see the payment and savings tradeoff.

Practical notes

- A lower payment can still increase lifetime interest if you reset into a fresh 30-year term.
- Refinance decisions should compare break-even against how long you realistically expect to keep the loan.
- Cash-out should be evaluated separately from a simple rate-and-term refinance because it increases secured debt.

Next steps

Compare quote structures

Request the same term and lock period from multiple lenders so break-even stays apples to apples.

Check shorter terms too

A 20-year or 15-year refinance can preserve savings while avoiding too much term reset.

Save your scenario

Get a clean report and revisit the numbers when rates, costs, or your timeline change.

Get your next-step options

Save your payment estimate, connect with a refinance professional, or request lender quote options.

Get my refinance reportConnect with a local expertCompare lender quotes

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The rate drop rule — how much lower does your rate need to be?

One of the most persistent refinance myths is that you should only refinance if your new rate is at least 1% lower than your current rate. That rule used to be repeated because it was simple, but it is too blunt to be reliable. It ignores the size of your balance, the closing costs being charged, whether you are shortening or extending the loan term, and how long you expect to keep the mortgage. In practice, the “right” rate drop is different for almost every homeowner.

Consider two borrowers. The first has a large remaining balance, low closing costs, and plans to stay for another ten years. The second has a smaller balance, higher lender fees, and may move in two years. The first borrower might benefit from a rate drop of only 0.375% because the savings accumulate over a long period and the larger balance produces more monthly payment relief. The second borrower might need much more than a 1% rate reduction just to break even before moving. Same market, very different answer.

The better framework is not “How much did the rate fall?” but “What do the math and timeline say?” Start with the monthly savings created by the new payment. Then ask whether those savings recover the closing costs in time. Next, ask whether the new term changes the long-run picture. A 0.50% drop into a 20-year refinance might be stronger than a 1.00% drop into a new 30-year loan if the shorter term preserves amortization progress while still producing usable monthly savings.

Points and lender credits matter here too. Some lenders advertise a lower rate only because the borrower is paying more upfront. Others offer a slightly higher rate with credits that reduce cash due at closing. Neither structure is automatically better. If the rate buydown is expensive and you plan to move soon, paying points may not make sense. If you expect to keep the loan for a long time, a lower rate bought with reasonable points can create better total savings. The “correct” rate-drop rule is really a break-even rule disguised as a rate question.

This is why we recommend comparing multiple quote structures side by side instead of focusing on the interest rate headline alone. Ask each lender for the same lock period, the same term, and a clean estimate of fees. Then run those numbers through this refinance calculator. It will show whether the lower rate actually produces a better outcome or just a more expensive closing package. If you want another point of reference, pair this with the monthly affordability lens on our mortgage calculator and compare how the payment change fits your broader housing budget.

15-year vs 30-year refinance — the real trade-off

Many refinance decisions fail because borrowers compare only one dimension of the offer. A 30-year refinance looks attractive because the payment drops the most. A 15-year refinance looks attractive because the interest savings can be dramatic. The real answer lives between those two headline benefits. You are not choosing between “good” and “bad.” You are choosing which trade-off best matches your goals, cash flow, and stage of life.

A 30-year refinance is usually the strongest tool when monthly payment relief is the priority. It spreads repayment over more months, which can lower required payment and improve flexibility in the household budget. That can be useful for borrowers trying to reduce fixed expenses, improve cash reserves, handle variable income, or make room for other financial goals. The downside is that stretching repayment can increase total interest, especially if you are already several years into the current loan.

A 15-year refinance usually does the opposite. The payment may stay similar or even rise, but much more of each payment goes toward principal. That often produces a much lower total interest cost and a faster payoff date. For borrowers with stable income who want to build equity more aggressively, that can be an excellent use of a lower rate environment. The risk is that the required payment becomes too tight. A refinance that looks optimal on paper is not optimal if it makes the monthly budget fragile.

The 20-year option, when available, is often the most underrated middle ground. It can preserve some of the interest savings of a shorter term without the payment shock of a 15-year schedule. That matters especially for homeowners who have already paid their current loan down for years and do not want to restart a full 30-year clock. In many cases, the best refinance structure is not the most aggressive or the most comfortable one. It is the one that improves the payment enough while still respecting the progress already made on amortization.

A practical way to decide is to compare three outcomes at once: the new monthly payment, the break-even timeline, and the lifetime interest result. If the 30-year option lowers payment the most but adds too much long-run interest, and the 15-year option improves total cost but makes cash flow too tight, the 20-year option may be the best fit. Borrowers who like the lower-payment flexibility of a 30-year loan can also choose it intentionally and then pay extra principal when convenient. The important point is being deliberate. The refinance term is not just a button on the screen; it is the part of the decision that most directly shapes how much freedom or speed you buy with the new loan.

What is a no-cost refinance and who should consider it?

A no-cost refinance sounds like the perfect answer: lower payment, lower rate, and no cash due at closing. In reality, “no-cost” usually means the costs are being paid in a different way, not eliminated. The lender may charge a slightly higher interest rate and use the extra revenue to offset fees, or the fees may be rolled into the new balance so you finance them over time. That does not make a no-cost refinance bad. It just means borrowers need to understand what they are actually trading.

For some homeowners, a no-cost structure is exactly the right move. If you expect to move soon, a higher-rate refinance with lower upfront cost can improve break-even because you are not writing a large check to close. If cash reserves are a bigger priority than squeezing every last basis point out of the rate, preserving liquidity may be smarter than paying thousands in fees today. That is especially true when the savings from a traditional refinance would take years to recover.

The trade-off is long-term cost. A higher interest rate means smaller monthly savings and often more total interest over the life of the loan. Rolling costs into the new balance can also increase the amount on which interest is charged. That is why no-cost refinance offers should still be run through the same break-even framework. The fact that cash is not due at closing does not remove the need to compare payment, term, balance, and total expense. It only changes where and when the borrower pays.

A helpful way to evaluate a no-cost refinance is to ask for two versions of the same quote: one with the lowest reasonable rate and standard closing costs, and one with lender credits that reduce or erase the cash due upfront. Then compare the two payment paths over your planned stay. If the lower-cost structure produces better net savings because you will not keep the loan for long, that can be a rational choice. If you plan to stay for many years, paying some fees upfront for a meaningfully lower rate may still win.

The big mistake is assuming “no-cost” means “free.” It usually means the costs are hidden inside rate, balance, or both. Used carefully, it can be a smart option for borrowers who value near-term flexibility or short expected holding periods. Used carelessly, it can turn into a more expensive loan that only looks painless because the cost is spread out. If you are comparing structures, this page and the closing-costs guide together give a clearer picture than the marketing label alone.

When refinancing is not the right move

Refinancing is often framed as an obvious win whenever rates move lower, but there are plenty of situations where it is the wrong move. The clearest example is when the new payment is higher and the borrower is not receiving a benefit that justifies it. A slightly better rate does not help if closing costs, cash-out borrowing, or a shorter term push the required payment above what the homeowner actually wants or can comfortably handle each month.

Another common problem is short time horizon. If you expect to move, sell, or pay the mortgage off before the break-even month arrives, refinancing usually fails the most important test. You might still see a lower payment in the short run, but if the upfront cost is not recovered in time, the savings are incomplete. The chart on this page is designed for exactly that decision. If your planned-stay marker is still at or below zero, the refinance is not yet pulling its weight.

Refinance timing can also be wrong when the term reset creates too much additional interest. This tends to happen to borrowers who are well into their current mortgage and refinance into a fresh 30-year term just to shave the payment down. The payment can look better immediately while the total lifetime cost gets worse. For some households that trade-off is still acceptable, but it should be chosen with open eyes, not discovered later. Payment relief is valuable, but it is not the same thing as overall savings.

A refinance can also be a bad idea when the quote itself is weak. High fees, points that take too long to recover, inflated lender charges, or a rate that is not competitive can all turn a potentially good concept into a poor execution. That is why getting more than one quote matters. Borrowers should compare not only rate but also total lender fees, lock period, APR, and whether costs are being shifted into the balance or rate in ways that make the offer look better than it really is.

Finally, refinancing may not be the best answer when the underlying goal is better solved another way. If you need short-term liquidity, recasting, extra principal payments, budgeting changes, or even waiting for a more competitive market may be smarter than replacing the loan today. The best refinance decisions are not driven by rate headlines. They are driven by alignment between cost, timeline, cash flow, and long-term goals. If you want help pressure-testing the numbers, the report request on this page is the simplest next step before talking with a lender.

Questions

Frequently asked questions

How do I calculate whether refinancing is worth it?

Compare your current principal-and-interest payment with the new refinance payment, subtract the two to find monthly savings, and then compare those savings with closing costs and how long you expect to keep the loan. A refinance is usually worth it when the break-even month arrives before you sell, move, or refinance again.

What is a mortgage refinance break-even point?

Break-even is the month when cumulative monthly savings finally recover the cash you spent on closing costs. Before that point you are still in the hole, and after that point the refinance starts creating real net savings.

How much does it cost to refinance a mortgage?

Typical refinance closing costs often run from about 2% to 5% of the loan amount, but the exact number depends on lender fees, appraisal requirements, title charges, prepaid interest, and whether points are being paid to reduce the rate.

Should I refinance to a 15-year or 30-year mortgage?

A 15-year refinance usually raises the monthly payment but can save a large amount of interest over time. A 30-year refinance lowers payment more aggressively but can increase total interest if you restart amortization late in your existing loan.

What is a cash-out refinance and how does it work?

A cash-out refinance replaces your current mortgage with a larger new loan and gives you the difference in cash at closing. Because the new balance is higher, the payment and total interest often rise, so it should be evaluated separately from a simple rate-and-term refinance.

How much lower does my rate need to be to make refinancing worth it?

There is no single universal rate-drop rule. The answer depends on your loan balance, closing costs, term choice, and how long you plan to keep the loan. Even a smaller rate drop can work if costs are low and you plan to stay for years, while a full 1% drop can still be a bad idea if you reset the clock or move soon.

Does refinancing reset my mortgage clock?

It can. If you refinance into a fresh 30-year loan after already paying several years on your current mortgage, you may reduce the monthly payment but extend how long interest is being charged. That is why monthly savings should always be checked against lifetime interest.

What are the typical closing costs when refinancing?

Common refinance closing costs include lender origination fees, appraisal fees, title services, recording fees, credit reports, and other settlement charges. Some lenders also offer discount points, which increase upfront cost in exchange for a lower interest rate.

What is a no-cost refinance and is it actually free?

A no-cost refinance usually means the lender covers upfront costs by charging a higher interest rate or rolling fees into the loan. It can still be useful, but it is not truly free because the borrower repays those costs over time through a higher payment, more interest, or a larger balance.

When does refinancing NOT make sense?

Refinancing often does not make sense when the new payment is higher, closing costs are too large for the expected savings, the borrower plans to move before break-even, or the new loan term creates so much extra lifetime interest that the short-term payment relief is not worth the long-term cost.

Related guides

Related refinance resources

If you want to pressure-test refinance fees, rate structure, and payment tradeoffs before committing, these guides are the best next read after the calculator.

Refinance break-even guide