GST Calculator
Calculate GST for any amount with all Indian tax slab rates. Supports CGST + SGST (intra-state) and IGST (inter-state) calculations.
About GST Calculator
GST — Goods and Services Tax — applies to almost every commercial transaction in India, with different slab rates for different categories of goods and services. This GST calculator handles all the slabs (0%, 3%, 5%, 12%, 18%, 28%) and lets you calculate either the GST amount on a base price, or the original base price from a GST-inclusive total. It also splits the result into CGST, SGST, and IGST automatically based on whether the transaction is intra-state or inter-state.
Useful for freelancers preparing invoices, small business owners pricing products inclusive or exclusive of tax, accountants reviewing transactions, and anyone trying to understand exactly how much GST they paid on a recent purchase. The split between CGST/SGST and IGST is automatic, so you do not need to remember which one applies — the tool handles it based on a single dropdown.
How to Use
Enter the amount (with or without GST based on your selection).
Select the GST rate (5%, 12%, 18%, or 28%).
Choose whether to add GST (exclusive) or extract GST (inclusive).
Select supply type: Intra-state (CGST + SGST) or Inter-state (IGST).
Click 'Calculate' to see the complete GST breakup.
Frequently Asked Questions
What is the difference between GST Exclusive and Inclusive?
GST Exclusive means the amount does not include GST — GST will be added on top. GST Inclusive means the amount already includes GST — the tool will extract/separate the GST from the total.
What is the difference between CGST+SGST and IGST?
For intra-state supply (within the same state), GST is split equally into CGST (Central GST) and SGST (State GST). For inter-state supply (between different states), the full GST is charged as IGST (Integrated GST).
What are the current GST rates in India?
India has four main GST slabs: 5% (essential goods), 12% (standard goods), 18% (most services and goods), and 28% (luxury and demerit goods). Some items are exempt (0%) or have special rates.
Is this calculator accurate for filing GST?
This calculator provides accurate GST computations based on standard rates. However, for official GST filing, always verify with your chartered accountant and the GST portal.
GST Calculator India: Calculate CGST, SGST & IGST Online Free
GST calculations get tricky with CGST, SGST, IGST, and inclusive vs exclusive modes. Our calculator handles all of it instantly with all current Indian slab rates.
Read the full guide