Refinance Calculator: Break-Even & Savings

	Current (remaining)	New loan	Difference
Principal	$350,000.00	$350,000.00	$0.00
Monthly payment	$2,375.76	$2,053.64	-$322.12
Time to pay off	360 mo	360 mo	–
Interest rate	7.20%	5.80%	-1.40%
Est. APR (cash closing) Incl. points & fees paid upfront	,	5.880%	,
Total payments over loan	$855,273.14	$739,308.83	-$115,964.32
Total interest	$505,273.14	$389,308.83	$115,964.32
Cash closing	,	$3,000.00	,

Refinance Calculator: Break-Even Analysis for 2026

Compute the break-even point (closing costs divided by monthly savings), monthly payment reduction, and net lifetime benefit after closing costs. All calculations run locally, no sign-up.

What This Calculator Does

Break-even on a refinance is closing costs divided by monthly savings. At $4,000 in closing costs and a $109/month drop, that's 37 months before you're ahead, anything past 48 months is a bet that you don't sell, refinance again, or hit a life change first. This calculator runs that math for your numbers and adds the longer-horizon view that monthly savings alone hide: total interest remaining on each loan, net lifetime benefit after closing costs, and a clock-reset flag if the new term extends your payoff date.

Key Outputs:

Break-even in months with risk classification (under 24 = strongly recommended, 24–48 = market dependent, over 48 = caution), monthly payment savings, total interest remaining on each loan, net lifetime benefit after closing costs, and a clock-reset warning when the new term pushes past your current payoff date.
What It Does Not Do:

Doesn't pull live rates, doesn't model the mortgage interest deduction, and doesn't handle ARMs. It assumes fixed-rate loans with standard monthly amortization. Real-world refi quotes also vary by credit score, LTV, occupancy, and loan size in ways no calculator captures.

How the Math Works

The calculator uses the standard amortization formula to compute monthly payments for both the current and proposed loans, then derives savings and break-even from the difference:

PMT = L \times \frac{r(1+r)^n}{(1+r)^n - 1}

where L is the loan balance, r is the monthly interest rate (annual rate ÷ 12), and n is the total number of monthly payments. Break-even divides closing costs by the monthly savings:

\text{Break-Even (months)} = \frac{\text{Closing Costs}}{\text{Current PMT} - \text{New PMT}}

Net Lifetime Benefit:

Total interest remaining on the current loan minus total interest on the new loan, minus refinance closing costs. A positive value means refinancing saves money over the full term.
Clock-Reset Check:

If the new term extends beyond the current payoff date, the calculator warns that you are adding months of interest. A shorter-term refinance (e.g. 15 or 20 years) often produces a better net benefit even with higher payments.
Worked Example:

$250,000 balance at 7.25% with 25 years remaining (taken out in early 2024 when rates peaked, current PMT ≈ $1,807). Refinance to 6.50% for a fresh 25-year term, $4,000 closing costs. New PMT ≈ $1,688. Monthly savings = $119. Break-even = $4,000 ÷ $119 ≈ 34 months ("market dependent" zone). Net lifetime benefit ≈ $31,700 after closing costs, assuming you hold the new loan to term.

How to Use This Calculator

Enter your current mortgage details first: remaining loan balance, current interest rate, and remaining term in years. The calculator computes your current monthly payment automatically. Next, enter the proposed new loan terms: interest rate, loan term, and estimated closing costs (typically $2,000–$5,000 in 2026).

Cash-Out Amount (optional):

If you plan to borrow more than your current balance, enter the additional cash-out amount. This increases the new loan balance and affects monthly savings and break-even calculations.
Mortgage Points (optional):

Enter the number of discount points you plan to buy. One point costs 1% of the loan amount and typically reduces the rate by about 0.25%. Point cost is added to closing costs and the rate reduction flows through to the new monthly payment.
Review Break-Even Results:

Check the break-even period and its risk classification: under 24 months (strongly recommended), 24–48 months (market dependent), or over 48 months (high risk). Compare only if you expect to stay past break-even.
Total Interest Comparison:

View total interest remaining on your current loan versus the new loan, the net lifetime benefit after closing costs, and any clock-reset warning if the new term extends your debt timeline.

Understanding Refinance Break-Even Analysis

What is Break-Even Point?

Break-even point is the number of months it takes for your monthly savings to offset the closing costs of refinancing. The formula:

\text{Break-Even (months)} = \frac{\text{Closing Costs}}{\text{Monthly Savings}}

For example, $3,000 in closing costs with $150/month savings gives a 20-month break-even. You only benefit if you stay in the home longer than that.

Break-Even Classification

Break-even under 24 months is 'Strongly Recommended', you'll recoup costs quickly and start saving. Break-even between 24-48 months is 'Market Dependent', consider your plans and rate outlook. Break-even over 48 months is 'Caution: High Risk', rate fluctuations and life changes may negate benefits before you break even.

The 1% Rule Evolution

The old 'refinance when rates drop 1%' guideline came from lower-rate environments where small absolute drops produced large relative payment changes. With 2026 30-year refinance rates averaging around 6.7-6.8%, a 0.5% drop can still work if closing costs are modest and break-even lands under two years. Run the actual closing-cost-divided-by-monthly-savings math; the rate differential alone doesn't tell you anything.

Total Interest Cost Analysis

Comparing Total Interest

Compare total interest remaining on your current loan versus total interest over the life of the new loan. Net lifetime benefit

= \text{Total Interest Saved} - \text{Refinance Costs}

. That number tells you whether refinancing actually saves money over the full term, not just whether your payment drops.

The Clock Reset Problem

Refinancing resets your amortization schedule. If you're 10 years into a 30-year mortgage and refinance into a new 30-year loan, you extend your debt by 10 years. Even with a lower rate, you may pay more total interest because you're starting over with a fresh interest-heavy schedule. Consider shorter terms (15-20 years) to avoid extending your debt timeline.

When Clock Reset Makes Sense

Clock reset can be beneficial if you need lower monthly payments for cash flow, plan to pay extra principal to shorten the term, or are consolidating high-interest debt. However, if your goal is minimizing total interest, avoid resetting the clock, choose a shorter term that matches your remaining timeline.

Cash-Out Refinancing Analysis

How Cash-Out Works

Cash-out refinancing allows you to borrow more than your current balance, taking the difference in cash. For example, if your balance is $300,000 and your home is worth $450,000, you might refinance $350,000 and take $50,000 in cash. This increases your loan amount and monthly payment.

The Hidden Costs of Cash-Out

Cash-out increases your loan-to-value (LTV) ratio, which may trigger PMI, higher insurance premiums, or less favorable rates. The additional interest on the cash-out amount can negate monthly payment savings. Calculate whether the cash-out purpose (renovations, debt consolidation) provides value exceeding the increased interest costs.

When Cash-Out Makes Sense

Cash-out refinancing makes sense for home improvements that increase property value, consolidating high-interest debt (credit cards, personal loans), or funding investments with higher returns than the mortgage rate. Always compare the cost of the cash-out (additional interest) to the benefit of the cash use.

2026 Refinance Market Considerations

Current Refinance Rates

As of mid-May 2026, the national average 30-year fixed refinance rate is around 6.7-6.8% (Bankrate 6.76%, Zillow 6.68%), 15-year fixed refinance averages roughly 6.1%, and the 30-year fixed purchase rate sits about 0.10-0.15% below the refinance rate. Investment-property refinances typically run 0.5-0.875% higher than primary-residence refinances, and cash-out refinances run 0.25-0.75% higher than rate-and-term refinances on the same property. Rate quotes also vary by credit score, loan-to-value ratio, and loan size, so the calculator's output is only as good as the rate you actually qualify for.

Closing Costs in 2026

Refinance closing costs typically run $2,000 to $5,000, including origination fees (0.5-1% of the loan amount), appraisal ($500-$800 in most markets), title insurance ($500-$1,500, varies heavily by state), credit report, recording fees, and lender fees. 'No-cost' refinances roll those costs into the loan balance or trade them for a 0.25-0.5% higher rate, which usually moves break-even from a one-time hurdle to a slow drip across the life of the loan.

The Points Decision

Mortgage points are prepaid interest. One point costs 1% of the loan amount and typically reduces the rate by about 0.25%. The point break-even is its own calculation: one point on a $300,000 loan ($3,000) that drops 6.75% to 6.50% saves about $49/month, breaking even at 61 months. Sell or refinance again before that and you overpaid. Points only make sense when you're confident you'll hold the loan past the point-specific break-even, which is a higher bar than the refinance break-even itself.

15-Year vs. 30-Year Refinance

The 15-Year Trade-Off

Worked example using mid-May 2026 averages: $300,000 balance, 30-year at 6.75% pays $1,946/month for $400,560 in total interest; 15-year at 6.10% pays $2,548/month for $158,640 in total interest. The 15-year costs about $600 more each month and saves roughly $242,000 in interest while finishing 15 years sooner. The math always favors the shorter term in absolute interest paid; whether it favors you depends on whether the higher payment leaves enough margin for emergencies, retirement contributions, and the rest of life.

The 30-Year Flexibility

Lower required payments, more room in the monthly budget, and the option to make extra principal payments when you have the cash. The trade-off is that without the discipline of a higher required payment, the extra-principal habit often slips, and you end up actually paying for the full 30 years. If you'll reliably direct the $600/month difference to extra principal or higher-return investments, the 30-year wins on flexibility; if it'll get absorbed into spending, the 15-year forces the savings.

The Hybrid Approach

Take the 30-year at the lower required payment, then voluntarily pay the equivalent of a 15-year payment each month. On the same $300,000 example, paying $2,548/month against a 30-year, 6.75% loan finishes it in about 16 years instead of 30 and saves roughly $207,000 in interest. You give up the 0.5-0.7% rate advantage of the actual 15-year product (the 15-year at 6.10% saves another $35,000 on top), but you keep the safety valve of dropping back to the lower minimum if income changes.

How to Decide Whether to Refinance

1. Pull together your current loan details

You need the remaining balance, current rate, remaining term, and current monthly payment (principal + interest, excluding escrow for taxes and insurance). Your most recent mortgage statement or amortization schedule has all four. If the payment isn't handy, the calculator derives it from balance, rate, and remaining term.

2. Get at least three rate quotes with full closing-cost detail

Same-day quotes from at least three lenders (one bank, one mortgage broker, one online lender is a reasonable spread) on the same loan amount and term. Ask for the loan estimate, not just the rate, the all-in closing-cost figure determines break-even more than the rate gap. A 6.625% rate with $2,000 closing often beats a 6.5% rate with $5,000 closing on any sale horizon under five years.

3. Run break-even and net lifetime benefit

Monthly savings = current payment minus new payment. Break-even months = closing costs divided by monthly savings. Net lifetime benefit = total interest saved over the new term, minus closing costs. The first number tells you when you stop losing money on the refi. The second tells you whether the full-term math actually wins, especially after a clock reset.

4. Check the clock reset and pick the term accordingly

If you're more than 5 years into a 30-year mortgage, a fresh 30-year refi adds those years to your payoff date and can raise total interest paid even at a lower rate. Match the new term roughly to your remaining payoff (year 8 of a 30-year leans toward a new 22-year, year 12 leans toward a new 18-20) so you keep the finish line in the same place.

5. Pressure-test against your real timeline

If your break-even is 36 months and you're realistically going to move or refinance again in 24, the refi loses money. With 2026 headline inflation running 3.8% (April 2026 CPI-U), $100/month of savings five years out is worth roughly $83/month in today's dollars, so far-future savings count for less than near-term ones. Refinance only when break-even is comfortably shorter than your honest stay horizon.

Refinance Calculator FAQ

When should I refinance my mortgage?

Refinance when break-even (closing costs ÷ monthly savings) lands under 24 months and you expect to stay in the home past that point. The old '1% rule' is less relevant in 2026; a 0.5% rate drop can still work if closing costs are low and break-even is short.

What is a break-even point in refinancing?

The break-even point is the number of months it takes for your monthly savings to offset the closing costs of the new loan. For example, if closing costs are $3,000 and you save $150/month, your break-even is 20 months. You only benefit if you stay in the home longer than the break-even period.

How much does it cost to refinance a mortgage in 2026?

Refinance costs typically range from $2,000 to $5,000 in 2026, including origination fees, appraisal, title insurance, and other closing costs. Some lenders offer 'no-cost' refinances by rolling costs into the loan amount or charging a slightly higher interest rate.

What is the 'clock reset' problem in refinancing?

The clock reset occurs when you refinance a loan you're already paying down into a new full-term loan. For example, if you're 10 years into a 30-year mortgage and refinance into a new 30-year loan, you extend your debt by 10 years, which may increase total interest paid even with a lower rate.

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

A 15-year loan typically carries a rate about 0.5-0.7% below the 30-year (around 6.1% vs 6.7% as of mid-May 2026) and pays off in half the time, but the monthly payment is roughly 30-35% higher on the same balance. On a $300,000 loan at those rates, a 30-year payment is about $1,946 and a 15-year is about $2,548, around $600/month higher, in exchange for finishing 15 years earlier and saving roughly $240,000 in interest over the life of the loan. Pick the 15-year if cash flow comfortably absorbs the higher payment with margin for emergencies; pick the 30-year if you'd rather keep the lower required payment and direct the difference to other savings or extra principal payments at your discretion.

What is cash-out refinancing?

Cash-out refinancing allows you to borrow more than your current balance, taking the difference in cash. This increases your loan-to-value (LTV) ratio and may trigger higher insurance premiums or PMI. The additional interest on the cash-out amount can negate monthly payment savings.

How do mortgage points work in refinancing?

Points are prepaid interest that lower your interest rate. One point typically costs 1% of the loan amount and reduces the rate by 0.25%. Paying points only makes sense if you plan to keep the home longer than the point-specific break-even period. Calculate the point break-even separately from the refinance break-even.

Will refinancing reset my amortization schedule?

Yes. Refinancing creates a new loan with a fresh amortization schedule. In the early years, most of your payment goes to interest. If you're already 10+ years into your current loan, refinancing resets this schedule, potentially increasing total interest paid even with a lower rate.

What is a good break-even point for refinancing?

Break-even under 24 months is strongly recommended. Break-even between 24-48 months is market dependent, consider your plans and rate outlook. Break-even over 48 months is high risk due to potential rate fluctuations and life changes.

Should I refinance if I'm planning to move soon?

Only if your break-even point is shorter than your planned move timeline. If you're moving in 12 months but break-even is 18 months, refinancing costs more than it saves. Always calculate break-even before refinancing if you have near-term moving plans.

Current loan

New loan terms

Scorecard

Break-even vs 60 mo

Loan comparison

Charts

What Drives the Refinance Decision

Break-even and how long you'll stay

Clock reset adds years of interest

Cash-out trades equity for higher payments

The 1% rule is too coarse for 2026