Start free

Mortgage & Home Loans · Payoff & Refinance

Extra Payment Calculator

See how an extra monthly payment shortens your loan and cuts total interest.

  • Free to use here · embed on the Free plan
  • 4 inputs · 5 results
  • English & Spanish

Try the Extra Payment Calculator

See the impact of extra payments — results update as you type.

Loading the live calculator…

Estimates only — not a loan offer or financial advice.

Put this calculator on your website

What this calculator does

What the Extra Payment calculator works out

The Extra Payment Calculator is a free, embeddable calculator from CalcFunnel. See how an extra monthly payment shortens your loan and cuts total interest.

You enter 4 inputs: loan amount, interest rate (%), loan term (years) and extra monthly payment.

It returns time saved, new payoff, interest saved, new monthly payment and standard payment.

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. 01Time Saved
  2. 02New Payoff
  3. 03Interest Saved
  4. 04New Monthly Payment
  5. 05Standard Payment

The first figure — time saved — 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.

Loan Details

Loan Amount
Your remaining or original loan balance — the amount you are looking to pay off.
Interest Rate (%)
The annual interest rate on your loan. A higher rate means more interest saved when you pay extra.
Loan Term (years)
The original number of years for the loan. Together with the rate, this sets your standard monthly payment.

Extra Payment

Extra Monthly Payment
The additional amount you plan to add to every monthly payment — it goes straight to principal and shortens your payoff.

For your website

Embed this calculator on your website

Put the Extra Payment 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

Extra Payment calculator FAQs

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

Q.01What does the Extra Payment Calculator calculate?
See how an extra monthly payment shortens your loan and cuts total interest. It returns time saved, new payoff, interest saved, new monthly payment and standard payment.
Q.02What information do I need to use the Extra Payment Calculator?
You enter 4 inputs: loan amount, interest rate (%), loan term (years) and extra monthly payment. Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Loan Amount” mean in the Extra Payment Calculator?
Your remaining or original loan balance — the amount you are looking to pay off.
Q.04What does “Interest Rate (%)” mean in the Extra Payment Calculator?
The annual interest rate on your loan. A higher rate means more interest saved when you pay extra.
Q.05Is the Extra Payment 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 Extra Payment 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 Extra Payment 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 Extra Payment results financial advice?
No. Estimates only. Savings assume every extra payment is applied to principal and that your loan has no prepayment penalty. Confirm with your servicer.

Related mortgage & home loans calculators

All 43 in Mortgage & Home Loans

Your website does the math. You get the lead.

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

Start free Compare plans
  • Free plan, no card
  • 14-day trial on Pro & Business
  • Cancel any time