About the GST Calculator
Add GST to a base amount or extract the base amount and GST from a tax-inclusive price, across the common Indian GST slabs, with a CGST/SGST split.
₹
GST Calculator
Add or remove GST across common Indian tax slabs.
GST slabs as of FY 2026-27 (0%, 0.25%, 3%, 5%, 12%, 18%, 28%) — the GST Council can revise rates, so verify the current slab for your goods or services.
Base amount
₹1,000.00
Total amount
₹1,180.00
Total GST
₹180.00
CGST
₹90.00
SGST
₹90.00
How the result is produced
Add mode calculates GST as `base × rate`; remove mode backs the tax out of a tax-inclusive amount using `inclusive × rate / (100 + rate)`, then splits the result into CGST and SGST for the displayed model.
Example: Enter a ₹10,000 base amount at 18% to inspect the total invoice value and the displayed CGST/SGST split.
Limitations and review notes
GST treatment depends on supply type, place of supply, registration, exemptions, rounding, and current law. This calculator is not a filing or invoice-compliance system.
How to use it
- 1. Choose Add GST or Remove GST.
- 2. Enter the amount and select a GST rate.
- 3. Review the base amount, total amount, and GST split.
- 4. Check the CGST and SGST breakdown for invoicing.
FAQ
What is the difference between Add GST and Remove GST?
Add GST treats your amount as excluding tax and adds GST on top. Remove GST treats your amount as already including tax and extracts the base amount.
What are CGST and SGST?
For intra-state supplies, GST is split equally into Central GST and State GST, each half of the total GST amount.
Which GST rates are supported?
The common Indian slabs: 0%, 0.25%, 3%, 5%, 12%, 18%, and 28%.
Related tools
View category →Income Tax CalculatorAICompare Indian old and new tax regime estimates.₹income tax · calculator · indiaHRA CalculatorEstimate HRA exemption using salary, rent, and city type.₹hra · house rent allowance · taxHome Loan EMI CalculatorAICalculate EMI, interest, amortization, and prepayment impact.₹emi · home loan · amortization
Was this useful?