Can this calculator be used for all GST types?

This calculator works for both CGST+SGST (intra-state) and IGST (inter-state) by applying the combined rate. For detailed bifurcation, consult a tax advisor.

How do I remove GST from a total price?

Divide the GST-inclusive total by (1 + GST rate/100) to get the base amount, then subtract that from the total to find the GST portion — the reverse of adding GST to a base amount.

Is GST the same across all of India?

The rate slabs (0%, 5%, 18%, 40%, plus a narrow legacy 28% band) are set nationally and apply uniformly across states — what changes state to state is only the CGST/SGST split, never the total rate a buyer pays.

Tax & salaryIndia only

GST Calculator

Calculate GST amount, tax-inclusive pricing, and invoice totals instantly for businesses and consumers in India.

What do you want to do?

Base amount (before GST)₹1,000

GST rate (%)18%

GST amount

₹180

Base amount (before GST)₹1,000

GST @ 18%+ ₹180

Total amount (including GST)₹1,180

This calculator is for illustrative purposes only. GST rates and classifications may vary based on goods/services and government notifications. Please consult a tax professional for accurate tax compliance.

What Is GST Calculator?

A GST Calculator helps businesses and consumers calculate Goods and Services Tax (GST) quickly for invoices, product pricing, and tax estimation in India. It supports common GST slabs and provides instant tax-inclusive totals.

GST replaced most of India's earlier indirect taxes (VAT, service tax, excise duty) with a single, unified tax applied at each stage of the supply chain. Depending on whether a transaction happens within a state or across states, GST is split into CGST + SGST (intra-state) or IGST (inter-state) — the combined rate a buyer pays is the same either way, only how it's divided between central and state governments differs.

How Is GST Calculated?

For adding GST to a base amount:

GST Amount = (Base Amount × GST Rate) / 100 | Total = Base Amount + GST Amount

For example, a ₹1,000 base amount at 18% GST adds ₹180, for a total of ₹1,180. If you instead have a GST-inclusive price and need to find the base amount, divide by (1 + rate/100): a ₹1,180 inclusive price at 18% GST works back to a ₹1,000 base — the reverse of the forward calculation above.

Benefits Of GST Calculator

Faster Invoice Calculation

Quickly estimate GST-inclusive invoice totals without manual tax calculations.

Better Tax Planning

Businesses can estimate tax obligations and product pricing more accurately.

Transparent Pricing

Consumers can understand how much tax they are paying on purchases.

Error-Free Calculations

Avoid manual errors in tax computation and ensure accurate billing.

LessonUnderstanding GST — How the tax quietly baked into nearly everything you buy actually works.
CalculatorHRA Calculator — Your tax-exempt HRA — the lowest of three figures, not simply what you receive or pay.

Common questions

Following the September 2025 GST reform, the core slabs are 0%, 5%, 18%, and 40%. The earlier 12% slab was removed, and most goods that were taxed at 28% moved to 18%. A 28% rate still applies narrowly to a small number of items, such as pan masala and gutka, until their related cess obligations are cleared. The 40% rate is reserved for sin and luxury goods — tobacco products, sugar-sweetened beverages, gambling, and high-end vehicles.