GST Calculator for India
Calculate GST, CGST, SGST and IGST instantly with a fast, accurate financial calculator. Compute reverse taxes, deduct discounts, and generate printable invoice summaries.
Complete GST Calculator
Switch between Add GST or Remove GST, apply discounts, choose between Intra-State and Inter-State supply, and preview your itemized tax breakup in real time.
Understand GST At a Glance
Interactive data visualizations and proportion graphs that automatically respond to your input amounts and selected tax slabs.
Tax vs Net Proportion Donut Graph
Horizontal Value Split Proportional
Dynamic scale showing the exact ratio between the net taxable value and the calculated GST component.
Tax Division Matrix Intra-State
Under Intra-State sales, tax revenue is equally apportioned between the Central government and the destination State.
Invoice Waterfall Process Sequential
Compare All GST Slabs
Instantly compare how your entered amount transforms across all official standard Indian GST rate tiers (0%, 5%, 12%, 18%, 28%).
| GST Rate | Classification | GST Amount | CGST (50%) | SGST (50%) | Final Amount |
|---|
Everything You Need for GST Calculations
Designed for accounting professionals, merchants, and independent consultants. Click any feature card below to configure the calculator instantly.
GST Calculator
Add GST to any gross or net pricing with custom rate support.
Apply to Calculator →CGST Calculator
Calculate the 50% Central Goods and Services Tax share on intra-state supplies.
Set Intra-State →SGST Calculator
Calculate the 50% State tax component for regional accounting and billing.
Set Intra-State →IGST Calculator
Direct integrated tax calculation for interstate supply and overseas import-export.
Set Inter-State →Reverse GST Calculator
Extract the net taxable base and tax proportion from an MRP or gross inclusive figure.
Set Remove GST →GST Exclusive Calculator
Add precise statutory tax to pre-tax supplier quotations or contractor invoices.
Set Exclusive →GST Inclusive Calculator
Determine consumer shelf price tax margins and back out input tax credit values.
Set Inclusive →GST Discount Calculator
Apply supplier trade discounts before tax computation as required by Indian GST law.
Enable Discount →GST Invoice Generator
Generate clean, professional invoice bill summaries ready to copy, share, or print.
View Invoice →Rate Comparison Tool
Evaluate your product price elasticity across 0%, 5%, 12%, 18%, and 28% brackets.
Compare Rates →Taxable Value Calculator
Calculates the legally eligible taxable turnover base for GST return filings.
Compute Value →Invoice Total Calculator
Quick check of customer payable balances for luxury and sin goods under the 28% slab.
Set 28% Surcharge →Understanding Goods and Services Tax
Goods and Services Tax (GST) is a comprehensive, multi-stage, destination-based indirect tax levied on the manufacture, sale, and consumption of goods and services throughout India.
CGST
Central Goods and Services Tax is governed under the CGST Act 2017. It is collected by the Union Government on transactions taking place within a single state boundary.
SGST
State Goods and Services Tax is governed by respective state governments. On every intra-state transaction, SGST is levied simultaneously with CGST at an identical 50% split.
IGST
Integrated Goods and Services Tax applies when supply crosses state borders or during international trade/importation. It is administered directly by the Central Government.
How GST Calculation Works in 4 Steps
Enter Transaction Amount
Input your pre-tax contract price or total gross invoice receipt amount.
Select Applicable Slab
Pick standard tax rates (0%, 5%, 12%, 18%, 28%) or input a customized rate.
Choose Supply Jurisdiction
Toggle between Intra-State (CGST + SGST) or Inter-State (IGST) consignment.
Get Itemized Totals
Obtain instant taxable values, tax breakdown, charts, and invoice copy.
GST Exclusive Pricing
The quoted amount does not contain tax. GST is added on top of the taxable price.
Total Payable = Base + GST Amount
Example: ₹10,000 + 18% GST = ₹11,800 Total.
GST Inclusive Pricing
The quoted figure is the final consumer price (MRP) with tax already built-in.
GST Amount = Inclusive - Taxable Base
Example: ₹11,800 inclusive at 18% = ₹10,000 base + ₹1,800 tax.
Who Uses Our GST Calculator?
Retail & Storefronts
Quickly separate MRP sticker prices into taxable turnover and state tax collection.
E-Commerce Sellers
Compute market platform deductions, supplier rates, and customer shipping tax slabs.
Freelancers
Bill domestic and cross-border clients accurately under SAC service codes (typically 18%).
Consulting Agencies
Accurate client fee quotations and post-discount tax breakdowns for agreements.
Contractors & MSMEs
Material input costs and work contract GST estimations for competitive tender bids.
Chartered Accountants
Fast client spot-checks and verification of purchase bill tax breakdowns.
Recent Calculations
Frequently Asked Questions
Comprehensive answers regarding GST rates, invoice rules, calculations, reverse taxation, and input tax credits.