Tax calculation
Calculate Goods and Services Tax for any amount in India.
Total
₹1,180
1,000 + 180 in tax
GST is applied on the sale of goods and services in India. Select one of the standard rates (5%, 12%, 18%, 28%) or enter a custom rate. Use "Add GST" to calculate tax on a pre-tax amount, or "Remove GST" to extract the tax from a total price.
GST (Goods and Services Tax) is India's unified 5-level indirect tax system (5%, 9%, 12%, 18%, or 28%). A GST calculator instantly computes the tax liability on a base amount or works backward from a total to isolate the tax component, essential for invoicing, pricing, and compliance.
Enter your base price and select the applicable GST rate. The calculator multiplies the base by the GST percentage to reveal the tax amount, then adds it to show the final consumer price. If you have a total price, reverse the process: divide by (1 + GST rate as decimal) to extract the pre-tax amount and tax owed.
GST Amount = Base Price × (GST Rate ÷ 100) | Final Price = Base Price + GST AmountBase Price is the cost before tax. GST Rate is the applicable percentage (5%, 9%, 12%, 18%, or 28%). GST Amount is the tax liability. Final Price is what the customer pays.
| Input | Result | Notes |
|---|---|---|
| Base: ₹1,000, GST: 18% | Tax: ₹180 | Final: ₹1,180 | Common rate for packaged foods, electronics, and most goods |
| Base: ₹500, GST: 5% | Tax: ₹25 | Final: ₹525 | Standard rate for unpackaged food, grains, and basic essentials |
| Total: ₹2,360 (includes 18% GST), reverse calculate | Base: ₹2,000 | Tax: ₹360 | Useful for invoicing and audit when you know only the final amount |
CGST (Central GST) and SGST (State GST) are levied within India and total your GST rate (e.g., 9% + 9% = 18%). IGST (Integrated GST) applies to interstate sales and imports as a single 18% (or relevant rate). This calculator shows the combined amount; businesses split it for filing.
No. The GST rate depends on the product/service category, not the state. A 18% electronics tax applies nationwide. However, CGST and SGST split varies by transaction location. This calculator computes the total; your accountant handles the split.
Yes. Apply any discounts first to get the net selling price, then enter that into the calculator. GST is charged on the discounted amount, not the list price.
Split the invoice: calculate GST separately for each rate category, then sum them. A mixed invoice (e.g., ₹500 at 5% and ₹1,000 at 18%) requires two calculations.
No. GST is a single-stage tax. The rate is flat on the pre-tax price, not stacked. However, if a supplier adds a margin before you resell, you pay GST on their margin too—hence why accurate base prices matter.
Input GST is tax you pay on purchases; output GST is tax you collect on sales. This calculator shows your liability (output). To claim input credit, cross-check supplier invoices: reverse-calculate their base prices to spot overcharges or rate mismatches.