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GST Calculator

Calculate GST for any amount — exclusive or inclusive. Supports all GST slabs and both intra-state (CGST + SGST) and inter-state (IGST) supply types.

GST Calculator

Calculate your estimated tax

Base Amount

₹0.00

Total GST

₹0.00

CGST

₹0.00

SGST

₹0.00

Total Amount

₹0.00

What This Tool Does

  • Calculates CGST, SGST, and IGST for all GST slabs: 0%, 5%, 12%, 18%, and 28%.
  • Supports both tax-exclusive (add GST to base price) and tax-inclusive (reverse-calculate) modes.
  • Displays a full breakup — base amount, GST component, and final invoice value — in one click.
  • Works for inter-state (IGST) and intra-state (CGST + SGST) transactions automatically.

Why Use This Tool

  • Eliminates manual GST computation errors that lead to wrong invoices and GST return mismatches.
  • Saves time for small business owners, accountants, and freelancers who calculate GST dozens of times daily.
  • Helps traders and manufacturers in India quickly check tax liability before raising invoices.
  • Free to use — no login, no subscription required.

How to Use

  1. Enter the base amount (or inclusive amount) in the input field.
  2. Select the applicable GST rate: 5%, 12%, 18%, or 28%.
  3. Choose transaction type: Intra-state (CGST + SGST) or Inter-state (IGST).
  4. Click Calculate to instantly see the GST breakup and total payable amount.
  5. Copy or use the values directly on your invoice.

Frequently Asked Questions

Q: What is the difference between CGST, SGST, and IGST?

A: CGST and SGST are levied equally on intra-state transactions, each at half the applicable GST rate. IGST applies to inter-state transactions at the full GST rate.

Q: Can I calculate GST on an amount that already includes tax?

A: Yes. Switch to 'Tax Inclusive' mode and the calculator will reverse-calculate the base amount and GST component from the total.

Q: Which GST slab applies to my product?

A: GST slabs depend on the HSN code of your product. Use our HSN/SAC Code Finder to confirm the applicable rate.

Q: Is this calculator valid for FY 2025-26?

A: Yes. GST slabs are unchanged for most goods. The calculator reflects current CBIC-notified rates.