GST Calculator
Calculate GST amount and final price by adding or removing GST, with standard slab presets, custom rates, intra/inter-state tax breakdown, and visual charts.
Result
Base vs GST
- Base amount₹1,000.00(84.7%)
- CGST (9%)₹90.00(7.6%)
- SGST (9%)₹90.00(7.6%)
What is GST Calculator?
GST Calculator computes Indian Goods and Services Tax (GST) for domestic commercial and consumer transactions. It supports forward calculations (adding GST to a net base price) and reverse calculations (extracting GST from a tax-inclusive gross amount). The tool automatically divides intra-state transactions equally into CGST (Central GST) and SGST (State GST) or assigns the full tax to IGST (Integrated GST) for inter-state supply. It includes presets for standard slabs (0%, 0.25%, 3%, 5%, 18%, 40%), custom percentage inputs, and category hints for common goods and services.
How to use GST Calculator
- 1Select "Add GST" to calculate total price from a net amount, or "Remove GST" to extract base price from an inclusive total.
- 2Enter the monetary amount and choose a GST rate preset, custom percentage, or category hint.
- 3Toggle supply type between "Same state (CGST + SGST)" and "Different state (IGST)" to view the statutory tax breakdown.
Key features
Add & Remove (Reverse) GST Modes
Compute tax-exclusive to tax-inclusive amounts, or reverse-calculate the pre-tax base value from an inclusive gross bill.
Intra-State vs Inter-State Tax Splits
Automatically breaks down taxes into 50/50 CGST and SGST for local sales, or 100% IGST for inter-state transactions.
Preset Slabs, Custom Rates & Category Finder
Includes standard slab presets (0%, 0.25%, 3%, 5%, 18%, 40%), custom percentage input for any rate, and quick category suggestions.
Interactive Distribution Chart
Displays a visual donut chart showing the exact proportion of base value versus tax components in INR.
Examples & use cases
Intra-State Service Invoice (18% GST Added)
Adding 18% GST to an intra-state professional service bill of ₹50,000
Mode: Add GST | Amount: ₹50,000 | Rate: 18% | Supply: Same state
Base amount: ₹50,000 | Total amount: ₹59,000 | CGST (9%): ₹4,500 | SGST (9%): ₹4,500
Inter-State Goods Purchase (18% GST Removed / Reverse GST)
Extracting pre-tax base price from a ₹11,800 tax-inclusive inter-state purchase
Mode: Remove GST | Amount: ₹11,800 | Rate: 18% | Supply: Different state
Base amount: ₹10,000 | Total amount: ₹11,800 | IGST (18%): ₹1,800
Frequently asked questions
Helpful guides & tutorials
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