Free Calculator Widgets for Your Website

Add professional financial calculators to your website with a single line of code. Free forever, no sign-up required, mobile-responsive.

GST Calculator Widget

Add or remove 10% GST. Perfect for small business websites, accounting blogs, and bookkeeper sites.

AVAILABLE NOW

Embed Code

<iframe src="https://decisionlab.com.au/embed/gst-calculator/" width="100%" height="420" frameborder="0" style="max-width:430px;border-radius:12px;border:1px solid #e0e0e0"></iframe>

Paste this code anywhere in your HTML. The widget is responsive, light-theme, and loads fast. No JavaScript dependencies. Links back to DecisionLab for full calculator access.

More Widgets Coming Soon

Stamp Duty Widget

All states · First home buyer toggle

Mortgage Repayment Widget

Weekly/fortnightly/monthly

Income Tax Widget

FY 2025–26 brackets

Loan Repayment Widget

Car & personal loans

Want a specific calculator widget? Email us at hello@decisionlab.com.au — we build custom widgets for partners.

Want Custom Branded Widgets?

We build white-label calculator widgets with your branding for mortgage brokers, financial advisers, and accounting firms.

partnerships@decisionlab.com.au