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Mortgage & Home Loans · Adjustable Rate (ARM)

Interest Only ARM Calculator

See the low interest-only ARM payment and the jump once the rate adjusts and principal kicks in.

  • Free to use here · embed on the Free plan
  • 5 inputs · 6 results
  • English & Spanish

Try the Interest Only ARM Calculator

See your interest-only payment and the adjusted payment — results update as you type.

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Estimates only — not a loan offer or financial advice.

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What this calculator does

What the Interest Only ARM calculator works out

The Interest Only ARM Calculator is a free, embeddable calculator from CalcFunnel. See the low interest-only ARM payment and the jump once the rate adjusts and principal kicks in.

You enter 5 inputs: loan amount, initial rate (%), loan term (years), interest-only period (years) and adjusted rate (%).

It returns interest-only payment, payment after adjustment, payment change, balance at adjustment, loan amount and total interest.

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. 01Interest-Only Payment
  2. 02Payment After Adjustment
  3. 03Payment Change
  4. 04Balance at Adjustment
  5. 05Loan Amount
  6. 06Total Interest

The first figure — interest-only payment — 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
The total amount you are borrowing from the lender.
Initial Rate (%)
The interest rate during the initial interest-only period, before any adjustment.
Loan Term (years)
The total number of years over which the loan is scheduled to be repaid.

Rate Adjustment

Interest-Only Period (years)
How many years you pay interest only at the initial rate. When it ends, the rate adjusts and the full balance amortizes over the remaining term.
Adjusted Rate (%)
The new interest rate after the interest-only period ends, used to estimate the amortizing payment.

For your website

Embed this calculator on your website

Put the Interest Only ARM 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

Interest Only ARM calculator FAQs

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

Q.01What does the Interest Only ARM Calculator calculate?
See the low interest-only ARM payment and the jump once the rate adjusts and principal kicks in. It returns interest-only payment, payment after adjustment, payment change, balance at adjustment, loan amount and total interest.
Q.02What information do I need to use the Interest Only ARM Calculator?
You enter 5 inputs: loan amount, initial rate (%), loan term (years), interest-only period (years) and adjusted rate (%). Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Loan Amount” mean in the Interest Only ARM Calculator?
The total amount you are borrowing from the lender.
Q.04What does “Initial Rate (%)” mean in the Interest Only ARM Calculator?
The interest rate during the initial interest-only period, before any adjustment.
Q.05Is the Interest Only ARM 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 Interest Only ARM 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 Interest Only ARM 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 Interest Only ARM results financial advice?
No. Estimates only. After the interest-only period the rate adjusts with market indexes and the full balance amortizes over the remaining term, which can sharply raise your payment. Confirm caps and terms with your lender.

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