Estimate GST from net, gross, tax amount, or rate. Compare CGST, SGST, and IGST splits. Visualize results and export polished summaries instantly for records.
| Scenario | Taxable Value | GST Rate | GST Amount | Gross Total |
|---|---|---|---|---|
| Product sale with 18% GST | ₹10,000.00 | 18% | ₹1,800.00 | ₹11,800.00 |
| Service bill with 12% GST | ₹7,500.00 | 12% | ₹900.00 | ₹8,400.00 |
| Gross amount back-calculation | ₹5,000.00 | 5% | ₹250.00 | ₹5,250.00 |
Use these rows as sample references when checking invoices, quotations, and reverse GST calculations.
1. Add GST:
Taxable Value = (Quantity × Unit Price) − Discount + Additional Charges
GST Amount = Taxable Value × GST Rate ÷ 100
Gross Total = Taxable Value + GST Amount
2. Remove GST:
Taxable Value = Gross Amount ÷ (1 + GST Rate ÷ 100)
GST Amount = Gross Amount − Taxable Value
3. Derive GST Rate:
GST Rate = (GST Amount ÷ Base Amount) × 100
4. Split Tax:
CGST = GST Amount ÷ 2, SGST = GST Amount ÷ 2, or IGST = full GST Amount
It calculates GST in three ways. You can add GST to a taxable value, remove GST from a gross amount, or derive the GST rate from known values.
Yes. Choose the split option and the calculator divides total GST equally into CGST and SGST. This is useful for many domestic transactions.
Use IGST when you want the full tax shown as a single amount instead of a split. That helps with inter-state style tax presentation.
Yes. In add mode, you can enter either a percentage discount or a fixed discount. The tax is then calculated on the adjusted taxable value.
Yes. Select the remove mode, enter the gross amount and GST rate, and the calculator will estimate the original taxable value and tax portion.
Additional charges help model freight, handling, or other billable components that should be included before GST is applied to the taxable value.
It means the calculator works backward. Using a base amount and tax amount, it computes the percentage rate that produced that GST value.
Yes. After calculation, use the CSV or PDF buttons to export a neat summary for documentation, invoice checking, or quick reporting.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.