GSTTAX & SALARY
GST Calculator
Add or remove a GST-style percentage from a base amount and show the tax component.
Enter your values
Your inputs stay in this browser.ⓘ
Privacy-friendly: your inputs are processed locally in your browser.
Formula
Add mode: tax = base × rate. Remove mode: base = inclusive ÷ (1 + rate), tax = inclusive − base.
Add mode: tax = base × rate. Remove mode: base = inclusive ÷ (1 + rate), tax = inclusive − base.
How it works
1
Enter the amount and GST rate.
2
Choose whether to add GST or remove it from an inclusive price.
3
Review the base, tax and final amount.
Important notes
Actual GST rates and rules vary by country and product; this tool performs the arithmetic only.