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Add GST to a taxable amount or remove GST from an inclusive amount, with CGST/SGST or IGST split.
Tax year 2026 - Updated June 2026
Total after GST
₹11,800.00
₹1,800.00 GST added at 18%.
Taxable amount
₹10,000.00
GST amount
₹1,800.00
| Taxable amount | ₹10,000.00 |
| CGST (9.00%) | ₹900.00 |
| SGST (9.00%) | ₹900.00 |
| Total GST | ₹1,800.00 |
| Total amount | ₹11,800.00 |
Quick answers
How do I add GST to an amount?
Enter the taxable amount and GST rate. The calculator adds GST amount to the taxable value to show the GST-inclusive total.
How do I remove GST from an inclusive amount?
Choose the GST-inclusive mode. The calculator backs out the taxable value and GST amount from the total using the selected GST rate.
What is the difference between CGST SGST and IGST?
For many same-state supplies, GST is split into CGST and SGST. For many different-state supplies, GST is shown as IGST. Actual treatment depends on GST rules and supply details.
Does this GST calculator validate HSN or SAC code?
No. It calculates tax amounts only. It does not validate HSN/SAC classification, exemptions, reverse charge, input tax credit, or invoice compliance.
Can I create a GST invoice after calculating GST?
Yes. Use the India GST Invoice Generator when you need GSTIN, HSN/SAC, CGST/SGST, IGST, and PDF printing.
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The information and calculations provided on this website are for general informational and educational purposes only. Results are estimates based on publicly available tax rules and assumptions and may not reflect your actual tax liability or take-home pay. This content does not constitute tax, legal, accounting, or financial advice. Tax laws and regulations change frequently and vary based on individual circumstances. Consult a qualified tax professional, accountant, or financial advisor before making any financial decisions.
This website is not affiliated with the IRS, HMRC, Income Tax Department of India, or any government agency.