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GST Calculator

INR ₹ Ready

Add or remove Indian Goods and Services Tax (GST) with one-click 5%, 12%, 18%, and 28% presets, custom rates, and CGST/SGST split in INR.

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How to Use GST Calculator

  1. 1Enter the base or gross amount in Indian Rupees (`₹`).
  2. 2Choose 'Add GST (Exclusive to Inclusive)' or 'Remove GST (Inclusive to Exclusive)'.
  3. 3Click a standard Indian GST slab preset (`5%`, `12%`, `18%`, `28%`) or type a custom GST percentage.
  4. 4View the Net Original Amount, Total GST Amount (with 50/50 CGST & SGST split), and Final Gross Amount formatted in INR.

Key Features & Privacy

  • ✦Supports both Adding GST (`GST = Amount × Rate / 100`) and Removing GST from an inclusive price (`Original = Amount × 100 / (100 + Rate)`).
  • ✦One-click preset buttons for standard slabs: `5%`, `12%`, `18%`, and `28%`, plus any custom rate.
  • ✦Displays intra-state CGST + SGST (50% each) and inter-state IGST (100%) figures.
  • ✦Formatted using the Indian numbering system (`en-IN`, `₹1,00,000.00`).

Frequently Asked Questions

How is GST removed from a GST-inclusive price?
To extract the pre-tax base amount from a GST-inclusive price, you cannot simply subtract `Rate%` of the total. Instead, the formula is `Base Amount = Inclusive Amount × (100 / (100 + GST%))`, and `GST = Inclusive Amount - Base Amount`.
Does this show CGST and SGST splits?
Yes. For intra-state transactions, the total GST amount is divided equally into Central GST (CGST) and State GST (SGST).
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