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GST Calculator

Add or remove GST from an amount and view tax breakdown. The result appears instantly and stays on screen.

Enter details

Enter values and click calculate.

Educational estimate only. Actual bank, tax or investment results may vary.

What you get

  • Stable result cards
  • Clear formula-based estimate
  • Scenario comparison guidance
  • Related long-form guides

View all calculators

How to Use This GST Calculator

  1. Enter the amount you want to calculate GST on.
  2. Enter the GST rate percentage, such as 5, 12, 18 or 28.
  3. Select Add GST if you want to add tax on the base amount.
  4. Select Remove GST if your amount already includes GST and you want the base value.
  5. Click on Calculate now to view the base amount, GST amount and final amount.

Example

If the amount is ₹10,000 and GST rate is 18%, the Add GST mode shows the base amount, GST amount and final payable amount separately.

Use Tips

  • Use Add GST for invoice or selling price calculation.
  • Use Remove GST when you already have a GST-inclusive amount.
  • Always check the correct GST rate before using the result for billing or records.

This tool gives an educational estimate only. Real tax treatment may vary depending on rules, invoice type and business situation.