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Mortgage & Home Loans · Payoff & Refinance

Refinance Calculator

Compare your current mortgage to a refinance offer and find your break-even.

  • Free to use here · embed on the Free plan
  • 19 inputs · 14 results
  • English & Spanish

Try the Refinance Calculator

Enter your current loan and the new offer — results update live.

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Estimates only — not a loan offer or financial advice.

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What this calculator does

What the Refinance calculator works out

The Refinance Calculator is a free, embeddable calculator from CalcFunnel. Compare your current mortgage to a refinance offer and find your break-even.

You enter 19 inputs: original loan amount, current balance, current interest rate, original loan term, years already paid, years remaining, current monthly payment (P&I), current home value, new interest rate, new loan term, closing costs ($), closing costs (% of loan), roll closing costs into new loan, I want to take cash out, cash-out amount, property tax, home insurance, PMI rate and HOA fees.

It returns monthly savings, new monthly payment, current monthly payment, break-even point, lifetime savings and new loan amount, plus 8 more figures.

Built for loan officers, brokers and homebuyers. Embedding it on your own website is included on the Free plan (free forever for up to 5 calculators on one domain), as part of the Mortgage & Home Loans category.

Results it shows

  1. 01Monthly Savings
  2. 02New Monthly Payment
  3. 03Current Monthly Payment
  4. 04Break-Even Point
  5. 05Lifetime Savings
  6. 06New Loan Amount
  7. 07Cash Out
  8. 08New Loan-to-Value
  9. 09Yearly Savings
  10. 10Current Total Interest
  11. 11New Total Interest
  12. 12Current Total Cost
  13. 13New Total Cost
  14. 14Closing Costs

The first figure — monthly savings — is the headline result.

Inputs

The inputs it uses

Each field below comes straight from the calculator, with the same help text visitors see when they hover the info icon.

Current Loan Details

Original Loan Amount
The original amount you borrowed when you first took out this mortgage, before any payments were made.
Current Balance
What you still owe on your current mortgage today. This becomes the starting point for the new refinance loan.
Current Interest Rate
The annual interest rate on your existing mortgage. Comparing this to the new rate shows whether refinancing saves money.
Original Loan Term
The total repayment period of your existing mortgage when it was first originated.Options: 30 Years · 25 Years · 20 Years · 15 Years · 10 Years
Years Already Paid
How many years you have been making payments on this mortgage so far.
Years Remaining
How many years are left on your current mortgage. Leave at 0 to use the original term minus the years already paid.
Current Monthly Payment (P&I)
Your current principal and interest payment each month, excluding taxes and insurance. Leave at 0 to calculate it from the original loan amount, rate and term, or enter your actual payment.
Current Home Value
The current estimated market value of your home, used to calculate loan-to-value (for PMI) and how much cash you can take out.

New Loan Details

New Interest Rate
The interest rate offered on the refinanced loan. Lowering this rate is the most common reason to refinance.
New Loan Term
The repayment period for the new refinanced loan. Choosing a shorter term saves interest but raises the monthly payment.Options: 30 Years · 25 Years · 20 Years · 15 Years · 10 Years
Closing Costs ($)
The upfront fees required to close the new refinanced loan (lender fees, appraisal, title, etc.). Set to 0 to use the percentage instead.
Closing Costs (% of loan)
Closing costs as a percentage of the new loan amount. Used only when the dollar field is 0 — handy when you do not have a firm dollar figure yet.
Roll closing costs into new loan
When checked, closing costs are added to the new loan balance instead of paid out of pocket at closing, which increases your loan amount and total interest.

Cash-Out Refinance (Optional)

I want to take cash out
Enable this to borrow extra equity above your current balance and receive the difference in cash at closing.
Cash-Out Amount
The amount of equity you want to withdraw in cash. This is added to your current balance to form the new loan amount.

Additional Monthly Costs

Property Tax
Monthly property tax amount. This cost is the same before and after refinancing, so it does not change your monthly savings figure.
Home Insurance
Monthly homeowners insurance premium. Like property tax, this is an escrow item that does not change with the refinance.
PMI Rate
Annual Private Mortgage Insurance rate as a percentage of the loan. Applied when loan-to-value exceeds 80% on either the current or new loan.
HOA Fees
Monthly homeowners-association dues. These are the same regardless of refinancing and are included for a complete payment picture.

For your website

Embed this calculator on your website

Put the Refinance Calculator on your own site with your colors, copy and lead form. Every calculation can arrive in your CRM with the numbers attached.

Works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML — paste one line into an HTML or code block. No plugin needed.

Start free How embedding works

Free plan, no card. 14-day trial on Pro & Business.

  1. Inline on any pagePaste the snippet where the calculator should appear. It fills the width of its container and resizes to fit its content.
  2. Popup buttonA button sits on your page; visitors click it and the calculator opens in a popup.
  3. Floating corner widgetPaste once — or in your site-wide footer code — to show a floating calculator bubble in the corner of every page.
  4. Open from your own link or buttonGive any existing link, button or image a class and it opens the calculator when clicked.
  5. Direct linkA full-page link to the calculator for emails, social posts, QR codes or a menu item.

FAQ

Refinance calculator FAQs

Still stuck? Ask the team — we reply within one business day.

Q.01What does the Refinance Calculator calculate?
Compare your current mortgage to a refinance offer and find your break-even. It returns monthly savings, new monthly payment, current monthly payment, break-even point, lifetime savings and new loan amount, plus 8 more figures.
Q.02What information do I need to use the Refinance Calculator?
You enter 19 inputs: original loan amount, current balance, current interest rate, original loan term, years already paid, years remaining, current monthly payment (P&I), current home value, new interest rate, new loan term, closing costs ($), closing costs (% of loan), roll closing costs into new loan, I want to take cash out, cash-out amount, property tax, home insurance, PMI rate and HOA fees. Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Original Loan Amount” mean in the Refinance Calculator?
The original amount you borrowed when you first took out this mortgage, before any payments were made.
Q.04What does “Current Balance” mean in the Refinance Calculator?
What you still owe on your current mortgage today. This becomes the starting point for the new refinance loan.
Q.05Is the Refinance Calculator free to use?
Yes — you can use it on this page for free, without an account. Embedding it on your own website is included on the Free plan (free forever for up to 5 calculators on one domain), as part of the Mortgage & Home Loans category. Compare plans.
Q.06Can I embed the Refinance Calculator on my website?
Yes. Embed it inline, as a popup button, as a floating corner widget, from your own link or button, or share a direct link. It works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML sites with one line of code — see embedding.
Q.07Is the Refinance Calculator available in Spanish?
Yes. Labels, tooltips and result names are available in English and Spanish, and visitors can switch language in the calculator.
Q.08Can the calculator capture leads?
Yes. It can end with a lead form, a Get a Quote form, a Share panel or a button to any URL. Leads are saved with the inputs and results attached and can be forwarded to your CRM by webhook.
Q.09Are the Refinance results financial advice?
No. Estimates only. Your break-even depends on the rate, closing costs and how long you keep the loan; cash-out refinances are usually capped at 80% loan-to-value. Confirm the offer's terms with a licensed lender.

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The Refinance Calculator is one of 188 calculators you can brand and embed with one line of code.

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