Restored edition: original calculators and articles; newly sourced market and directory records. Review calculator assumptions before relying on results. Methodology
SmartRentOrBuy
Free for Any Website

Add a Free Rent vs Buy Calculator to Your Website

Give your readers the most accurate rent vs buy calculator available — free, no API key, no attribution required. One line of code. Works on any site.

Preview Calculator
59+
Financial Factors
500+
Cities with Local Data
Always
Free to Use
1
Lines of Code to Embed

How to Add the Calculator

  1. 1Copy the embed code below (or click the button above).
  2. 2Paste it anywhere in your HTML — inside a blog post, a sidebar, or a dedicated page.
  3. 3That's it. The calculator loads instantly and works on all devices.

Works great for:

Real estate blogs and news sites
Personal finance websites
Mortgage broker and lender sites
Real estate agent websites
Financial planning resources
Local news and city guides
embed-code.html
<iframe
  src="https://smartrentorbuy.com/widget"
  width="100%"
  height="700"
  frameborder="0"
  scrolling="no"
  title="Rent vs Buy Calculator"
  style="border-radius:12px;box-shadow:0 4px 24px rgba(0,0,0,0.10);"
></iframe>

What Your Readers Get

59+ Financial Factors

Mortgage rates, property taxes, HOA fees, maintenance, opportunity cost, tax deductions, and more — all calculated automatically.

IRS-Accurate Tax Math

The only free calculator that correctly applies the $750K mortgage interest deduction cap from the Tax Cuts and Jobs Act.

Always Up to Date

We update the calculator whenever tax laws or market conditions change. Your embed always shows the latest version automatically.

Mobile Responsive

Works perfectly on phones, tablets, and desktops. No extra configuration needed.

No Ads Inside

The embedded calculator is clean and ad-free. Your readers get a distraction-free experience.

No Attribution Required

Use it freely. A link back is appreciated but never required.

Frequently Asked Questions

Is the calculator really free to embed?

Yes, completely free. No API key, no account, no attribution required. Copy the code and paste it anywhere.

Will the calculator slow down my website?

No. The calculator loads inside an iframe from our servers — it has no impact on your page load time or Core Web Vitals.

Can I customize the size or appearance?

You can adjust the width and height attributes in the embed code. The calculator is responsive and will adapt to the container width you set.

What happens if you update the calculator?

Updates are automatic. Since the calculator is served from our servers, your embed always shows the latest version without any action on your part.

Do you offer a white-label version?

Not currently. The standard embed is the only option available. If you have a specific need, contact us through the Contact page.

Ready to Add the Calculator?

Join hundreds of real estate and personal finance sites that use the Smart Rent or Buy calculator to help their readers make better decisions.