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GST Calculator

Calculate GST amounts, tax-inclusive totals and tax-exclusive prices.

Use the tool

Free to use in your browser. Calculations happen locally on this device.

Base amount—
GST amount—
Total including GST—
CGST / SGST (if applicable)—

About this tool

Estimates GST for a selected rate, with options for tax-exclusive or tax-inclusive prices. The CGST/SGST split shown is a simple half split for illustration and is not a determination of the correct tax treatment for a transaction.

CPV Technologies provides this utility for general informational use. Check input values and assumptions before relying on a result.

Want a walkthrough?

Read the step-by-step guide to the GST Calculator for examples, tips and answers to common questions, or browse all guides.