GST Calculator

GST Calculator 2025 – India Goods & Services Tax Updated Feb 2026

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Content by CalculatorZone Indian Tax Experts
Tax specialists helping you calculate GST accurately. About our team
Sources: GSTN, CBIC

Calculate GST Instantly

Add or remove GST from prices. Works with 5%, 12%, 18%, and 28% tax slabs. Perfect for invoices and purchases.

Calculate GST

Key Takeaways

  • Inclusive vs Exclusive: Calculate tax included in price or add tax to base price
  • 5 GST slabs: 0%, 5%, 12%, 18% (standard), and 28%
  • Reverse calculation: Extract GST amount from total price
  • ITC benefit: Businesses can claim Input Tax Credit to reduce tax liability
  • Multi-purpose: Works for India, Australia, Canada, and other GST countries

The Goods and Services Tax (GST) has revolutionized taxation in India. Whether you're a business owner pricing products or a consumer checking a bill, our free GST calculator helps find the total cost or extract GST from an inclusive price instantly.

What Is GST?

GST is a comprehensive indirect tax levied on the supply of goods and services. It replaced multiple taxes like VAT, Service Tax, and Excise Duty, creating a unified tax structure across India.

Inclusive vs. Exclusive GST

1. GST Exclusive (Adding Tax)

Add tax to base price:

Total = Base Price × (1 + GST%)

2. GST Inclusive (Removing Tax)

Find base price from total:

Base Price = Total Price ÷ (1 + GST%)

Reverse GST Example

Final Price: Rs. 1,180 (18% GST included)

Original Cost = 1,180 ÷ 1.18 = Rs. 1,000

GST Amount = Rs. 180

Current GST Rate Slabs (India)

Current GST Rate Slabs in India
RateItems/Services
0%Essential goods: milk, fresh vegetables, grains
5%Coffee, tea, spices, economy air tickets
12%Processed food, cell phones
18%Most services, electronics, capital goods (Standard Rate)
28%Luxury items, cars, cement

Input Tax Credit (ITC)

ITC allows businesses to reduce GST payable on sales by the amount of GST already paid on purchases. This prevents "tax on tax" (cascading effect).

Tip: Always verify the applicable GST rate for your product/service as rates are periodically revised by the GST Council.

GST, VAT & Sales Tax Systems Around the World

India's GST is part of a global class of multi-stage indirect tax systems. Nearly 170 countries have implemented a GST or VAT. Understanding how these systems compare helps businesses operating internationally manage their tax obligations.

GST, VAT and Sales Tax Systems Around the World
CountryTax SystemStandard RateReduced RatesKey Features
IndiaGST (Goods & Services Tax) — dual GST (CGST + SGST for intra-state; IGST for inter-state)18% (standard); 28% (luxury/sin goods)0%, 5% (essentials), 12% (processed foods), 3% (gold/silver); Petroleum, alcohol, electricity outside GST scopeImplemented July 1, 2017 replacing 17 central and state taxes. GSTN portal for compliance. E-invoicing mandatory for large businesses. Input Tax Credit (ITC) for B2B transactions. Composition scheme for small businesses (turnover < Rs.1.5 Cr).
AustraliaGST (Goods and Services Tax) — federal; administered by ATO10% (flat rate, one of world's simplest systems)0% on basic food, healthcare, education, exports, childcare; no luxury rateIntroduced July 1, 2000. Annual BAS (Business Activity Statement) filing. PAYG installment system. Revenue shared with states under GST distribution formula. New Zealand has similar 15% flat GST. Revenue neutral threshold NZD 60,000 / AUD 75,000.
United KingdomVAT (Value Added Tax) — administered by HMRC20% (standard)5% (domestic energy, children's car seats, sanitary products); 0% (food, books, children's clothing, prescription drugs)UK VAT registration threshold £90,000 turnover (2024/25). Making Tax Digital (MTD) mandatory for VAT-registered businesses. Post-Brexit: UK and EU VAT systems diverged. Import VAT applies on goods from EU. Flat Rate Scheme for small businesses.
CanadaGST (federal 5%) + Provincial Sales Tax (varies) or HST (harmonized, replaces both)HST: 13–15% (ON/NB/NS/NL/PE); GST only: 5% (AB, territories); QST: 9.975% (QC)0% on basic groceries, prescription drugs, medical equipment, exports; no luxury GST rateOntario HST 13% (5% federal + 8% provincial). Alberta has no provincial sales tax (PST). Input Tax Credits available for businesses. Small supplier threshold: CAD $30,000/quarter. QST in Quebec separately administered by Revenu Québec. Luxury tax (10%) on aircraft, boats, cars over CAD $100,000 since 2022.
European UnionVAT — harmonized directives; each member state sets rates within EU rulesStandard rates: 17–25% across EU27; EU minimum standard rate 15%; Luxembourg lowest (17%); Hungary highest (27%)Reduced rates (5–10%) on food, pharmaceuticals, books; super-reduced (<5%) allowed for some goods; varied by countryEU VAT Directive sets framework; national implementation varies. One-Stop Shop (OSS) for cross-border e-commerce VAT since July 2021. Reverse charge mechanism for B2B. VIES database for VAT number verification. Distance selling thresholds unified at €10,000.
United StatesSales Tax — state/local level only; no federal VAT/GST0–state level: 0% (Oregon, Montana, NH, DE, AK); up to 10.25%+ combined state+local (Chicago, LA)Exempt: groceries (most states), prescription drugs, clothing (some states, e.g. NY); luxury taxes vary by stateUSA is one of very few major economies without federal VAT/GST. Each of 50 states has different rules. Post-South Dakota v. Wayfair (2018), states can require remote sellers to collect sales tax (economic nexus). 45 states + DC have sales tax. Sales tax is destination-based; VAT is origin-based.

Tax rates and rules change frequently. Always verify current rates with the relevant tax authority or a qualified tax professional before filing returns or pricing products/services for international markets. This information is for general educational purposes only.

Frequently Asked Questions

About This Calculator

Created by: CalculatorZone Development Team

Content Reviewed: January 2025

Last Updated: February 20, 2026

Methodology: This calculator uses standard GST formulas for inclusive and exclusive calculations.

This calculator is for educational purposes. Verify rates on official GST portal.

Financial Disclaimer: GST rates change periodically. Always verify current rates on the official GST portal or consult a tax professional for business decisions.

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Toggle between "Add GST" and "Remove GST" to get precise figures for invoices or purchases.

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