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Refinance Calculator

Compare current and new loan payments, estimate monthly savings, and calculate a refinance break-even timeline.

Updated April 11, 2026
Free online tool
Planning and research use

Why this page exists

Refinancing only helps when the savings justify the reset. This calculator compares the existing payment against a proposed new loan so you can see the tradeoff between lower monthly cost, closing costs, and time in the property.

Interactive tool

Run the estimate

Enter your numbers and read the result first, then use the sections below to understand what affects the outcome.

Calculator

Refinance calculator

Compare current and proposed refinance payments.

Result

$2,029

Estimated refinance payment with a comparison to your current remaining loan.

New estimated payment$2,029

Current estimated payment$2,194

Monthly savings$165

Break-even timeline2 years 8 months

Closing costs total $5,200.
The refinance changes remaining lifetime cost by about $70,620 under the assumptions here.
If you expect to keep the loan longer than the break-even period, the refinance may deserve a closer look.

Closing costs, escrow changes, and lender fees vary. Use this as a first-pass estimate only.

Planning note

Last updated April 11, 2026. Use this tool to compare scenarios and plan ahead, then confirm important details with the lender, employer, insurer, contractor, or other qualified provider involved in the final decision.

How it works

What the calculator is doing

Estimate the current payment from the remaining balance, current rate, and remaining years on the existing loan.

Estimate the new payment using the proposed rate and term, then compare the change in monthly cost.

Use the closing cost input to calculate a simple break-even timeline and review the long-term cost difference between the two loans.

Understanding your result

Monthly savings matter, but the break-even period is often the deciding factor. If you expect to move or sell before the closing costs are recovered, the refinance may not deliver the value it first appears to promise.

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Examples

Ways people use this tool

Example scenarios help turn a quick estimate into a more useful comparison or planning step.

Compare a shorter new term

A refinance can still be worthwhile even if the payment stays similar, especially when a shorter term cuts total interest sharply.

Stress-test closing costs

Raising the closing cost assumption shows how sensitive the break-even timeline is to lender fees and prepaid items.

Check whether the monthly savings are meaningful

A small payment drop may look attractive, but the break-even period helps you decide whether the savings are actually usable in your timeline.

When to use it

Good times to run this calculator

Use this calculator when a lender quote or lower rate looks attractive and you want to see whether the savings survive closing costs and timing.

Run it again when comparing a shorter new term, a different closing-cost estimate, or a different time horizon in the home.

Assumptions and limitations

The break-even estimate assumes the payment savings remain steady and that the loan is kept long enough to recover the refinance costs.

Cash-out amounts, tax implications, prepaid escrow items, and lender-specific fee structures are not modeled in depth, so the result is best used as a planning check.

Common mistakes

Avoid the usual input mistakes

Focusing only on the lower monthly payment can hide the fact that a reset term may increase total interest over time.

Ignoring how long you expect to stay in the property can make a refinance look better than it is if the break-even point is too far away.

Practical tips

Test one version with the exact quoted closing costs and another with a slightly higher number so the break-even point is not built on optimistic assumptions.

Compare both a lower-payment refinance and a shorter-term refinance because the best choice is not always the one with the biggest monthly drop.

Worked example

Walk through a realistic scenario

A worked example shows how the estimate behaves when the inputs resemble a real planning decision.

Check whether the break-even point fits your timeline

A homeowner sees a lower mortgage rate and wants to know whether refinancing makes sense before a likely move in a few years.

1. Enter the remaining balance, current rate, and remaining term to estimate the existing payment.

2. Add the proposed new rate, term, and closing costs to estimate the refinanced payment and the monthly savings.

3. Compare the break-even period with the expected time in the home to decide whether the savings are likely to be realized.

Takeaway: A refinance only earns its keep if the monthly savings last long enough to recover the upfront cost and still help afterward.

FAQ

Common questions

What is a refinance break-even point?

It is the number of months it takes for monthly savings to cover the upfront closing costs of the new loan.

Should I always refinance if the rate is lower?

Not necessarily. Closing costs, the new term length, and how long you plan to keep the loan all matter.

Can a refinance lower the payment but still cost more overall?

Yes. Extending the term can reduce the monthly payment while increasing the total interest paid over time.

Related tools

Keep comparing

Mortgage and property-tax tools help you sanity-check the housing payment assumptions before using the refinance result to make a real decision.

Closing-cost and budget tools are useful next steps when the refinance payment looks better but the upfront cost still needs to fit your cash plan.

Home ToolsUpdated April 11, 2026