NEW Updated for GST 2.0 — September 2025

The smartest GST calculator for India.

Calculate CGST, SGST, IGST and Cess in one tap. Built for businesses, freelancers, and anyone who hates math errors on tax day.

✓ Forward & reverse ✓ All GST 2.0 slabs ✓ Mobile-friendly ✓ 100% free

GST Calculator Tool

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⚠ For testing only — not valid for invoicing

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Calculation Result

Intra-State
Net Amount ₹ 10,000.00
CGST 9% ₹ 900.00
SGST 9% ₹ 900.00
Total GST 18% ₹ 1,800.00
Total Including GST ₹ 11,800.00
About this tool

India's Most Trusted GST Calculator Online

Our GST Calculator is a free, fast, and accurate online tool designed for Indian businesses, freelancers, accountants, and consumers. Whether you need to calculate GST on goods, compute CGST and SGST for intra-state sales, or work out IGST on inter-state transactions, this GST calculator online handles every scenario with mathematical precision — updated to reflect the latest GST 2.0 reforms effective from 22 September 2025.

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Instant GST Calculation

Type any amount and the GST calculator gives you the result in real time — no "calculate" button, no waiting. Perfect for billing, invoicing, and quick checks.

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Add & Remove GST

Use our GST calculator India in two modes — add GST to a base price or extract the embedded tax from an inclusive amount. Both forward and reverse calculations are supported.

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All GST Rates Covered

This GST tax calculator includes every slab — 0%, 0.25%, 3%, 5%, 12%, 18%, 28%, and the new 40% rate introduced under GST 2.0 for luxury and sin goods.

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CGST, SGST, IGST Split

Our GST percentage calculator automatically splits the tax into Central GST and State GST for intra-state supplies, or applies Integrated GST for inter-state transactions.

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Cess Support

Calculate GST with Compensation Cess for tobacco, aerated drinks, luxury cars, and other notified items where additional cess applies on top of regular GST.

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Mobile-Friendly & Free

This online GST calculator works perfectly on phones, tablets, and desktops. No signup, no ads, no hidden charges — completely free, forever.

Why Choose Our GST Calculator?

  • Updated for FY 2025-26 & GST 2.0: Our GST calculator India reflects the simplified slab structure (0%, 5%, 18%, 40%) introduced after the 56th GST Council meeting in September 2025.
  • Built by a developer with 10+ years of experience creating free finance and healthcare tools for the Indian public.
  • Verified against official sources including the CBIC portal, GST Council notifications, and ICAI guidance notes.
  • No data stored: All calculations happen in your browser. Your numbers stay with you — perfect for privacy-conscious users.
  • Used by 100,000+ Indians monthly — small business owners, CAs, students, e-commerce sellers, and freelancers.

Who Should Use This GST Calculator?

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Small Business Owners

Quickly calculate the right GST amount for invoices and pricing decisions without spreadsheets.

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Freelancers & Consultants

Add 18% GST to your service invoices and split it correctly as CGST + SGST or IGST based on the client location.

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E-commerce Sellers

Compute IGST on inter-state shipments and verify GST charged by marketplaces like Amazon, Flipkart, Meesho.

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Students & CA Aspirants

Verify GST homework, practice problems, and CA/CS exam scenarios with accurate breakdowns.

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Accountants & Tax Professionals

Cross-check client invoices, validate vendor GST charges, and quickly reverse-engineer inclusive prices.

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Everyday Consumers

Find out how much GST you actually paid on that restaurant bill, mobile phone, or online order.

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Instant Results

Real-time calculation as you type. No "Calculate" button.

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Forward & Reverse

Add GST to a base or extract embedded tax. Both modes covered.

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All Slabs

0%, 5%, 18%, 40% — including GST 2.0 reform rates.

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Privacy First

No login, no tracking, no data stored. Just math.

GST Rates 2026

Slabs simplified.

India's GST 2.0 reform reorganized slabs effective September 22, 2025. Here's the current structure.

0%
Exempt
  • Fresh fruits, vegetables
  • Milk, eggs, unbranded grain
  • Books, newspapers
  • Education services
  • Healthcare, insurance
5%
Essentials
  • Packaged food items
  • Soaps, shampoos, toothpaste
  • Footwear ≤ ₹2,500
  • Edible oils, sugar
  • Life-saving drugs
18%
Standard
  • Most goods & services
  • Electronics, ACs, TVs
  • Small cars, two-wheelers
  • Restaurants, telecom
  • IT & capital goods
40%
Luxury / Sin
  • Tobacco, pan masala
  • Aerated drinks
  • Luxury cars & SUVs
  • Two-wheelers > 350cc
  • Betting, gambling
3%
Special
  • Gold
  • Silver
  • Platinum
  • Jewellery
  • Precious metals
0.25%
Special
  • Rough diamonds
  • Uncut precious stones
  • Industrial diamonds
How It Works

Three steps to flawless GST.

The same workflow whether you're billing a client or extracting tax from an inclusive bill.

1

Enter the amount

Type the base amount when adding GST, or the inclusive total when extracting it. The calculator handles both.

2

Pick your rate

Choose from preset slabs (0% to 40%) or select supply type — Intra-state splits CGST+SGST, Inter-state shows IGST.

3

Read the result

See the full breakdown — net, tax components, cess, and final total. Copy with one tap.

The Math

Two formulas. Zero confusion.

The two equations behind every GST calculation — quietly handled for you.

→ Add GST

You have a base price

Multiply the net amount by the rate.

GST = Net × Rate ÷ 100
Total = Net + GST
Net amount₹10,000
Rate18%
GST₹1,800
Final Total₹11,800
← Remove GST

You have inclusive price

Reverse the formula to extract embedded tax.

Net = Total × 100 ÷ (100 + Rate)
GST = Total − Net
Inclusive total₹1,180
Rate18%
Net₹1,000
Embedded GST₹180
Tax Components

CGST vs SGST vs IGST

How India's federal tax structure splits revenue between the Centre and States.

Component
Levied By
When Applied
On ₹1,00,000
@ 18%
CGST
Central Govt
Intra-state
9%
₹9,000
SGST
State Govt
Intra-state
9%
₹9,000
IGST
Centre (split)
Inter-state
18%
₹18,000
UTGST
UT Admin
Within UTs
9%
Replaces SGST
Cess
Centre
Luxury / Sin
Variable
On top

What is GST in India?

The Goods and Services Tax (GST) is India's unified indirect tax system, introduced on 1 July 2017 to replace multiple indirect taxes including VAT, excise duty, and service tax. It follows the principle of "One Nation, One Tax" — a single framework across all states.

GST is a destination-based tax, meaning revenue accrues to the state where goods or services are consumed, not produced. It is also a multi-stage value-added tax with credit for tax paid on inputs.

Major Update — GST 2.0: Effective from 22 September 2025, the GST Council simplified the slab structure. The 12% and 28% slabs have been reorganised into 0%, 5%, 18%, and 40% — the biggest GST reform since 2017.

Real-Life Calculation Examples

Example 1: Restaurant Bill

Aditi orders food worth ₹2,000 at a Delhi restaurant. GST rate is 5%.

  • GST = 2,000 × 5% = ₹100
  • CGST ₹50 + SGST ₹50
  • Total: ₹2,100

Example 2: Inter-State E-commerce

Karnataka seller ships a phone worth ₹25,000 to Tamil Nadu buyer. GST is 18%.

  • IGST = 25,000 × 18% = ₹4,500
  • Total: ₹29,500

Example 3: Luxury Car (40% Slab)

Luxury sedan at ₹15,00,000 attracts 40% GST under GST 2.0.

  • GST = 15,00,000 × 40% = ₹6,00,000
  • Total: ₹21,00,000

Example 4: Reverse Calculation

Grocery item displays ₹525 inclusive of 5% GST.

  • Net = 525 × 100 ÷ 105 = ₹500
  • GST = ₹25

GST Registration: Who Must Register

Turnover Thresholds

  • Goods suppliers: ₹40 lakh (₹20 lakh in special-category states)
  • Service suppliers: ₹20 lakh (₹10 lakh in special-category states)

Mandatory Registration (Any Turnover)

  1. Inter-state suppliers
  2. E-commerce sellers (Amazon, Flipkart)
  3. Reverse-charge mechanism cases
  4. Casual taxable persons
  5. Non-resident taxable persons

Composition Scheme

Small businesses with turnover up to ₹1.5 crore can opt for flat rates: 1% (traders), 5% (restaurants), 6% (services). Quarterly returns, no ITC, no inter-state supplies.

Input Tax Credit (ITC) Explained

Input Tax Credit is the heart of GST — it lets registered businesses offset GST paid on purchases against GST collected on sales.

How ITC Works

A furniture maker buys timber for ₹10,000 + ₹1,800 GST. Sells a table for ₹15,000 + ₹2,700 GST.

  • GST collected: ₹2,700
  • GST paid on inputs: ₹1,800
  • Net to government: ₹900

Tax is paid only on the ₹5,000 value added — not the full ₹15,000.

What's NOT Eligible

  • Motor vehicles for personal use
  • Food, beverages, club memberships
  • Goods used for exempt supplies
  • Personal consumption items
Questions

Frequently asked.

Quick answers to the things people ask us most.

How do I calculate GST in India?+

To add GST: GST = (Net × Rate) ÷ 100. For ₹10,000 at 18% = ₹1,800 GST, total ₹11,800.

To remove GST: Net = (Total × 100) ÷ (100 + Rate). For ₹1,180 inclusive at 18%, net is ₹1,000, embedded GST is ₹180.

What are the current GST rates in India 2026?+

Following GST 2.0 reforms effective 22 September 2025, India has four main slabs: 0%, 5%, 18%, and 40%. Special rates of 0.25% (rough diamonds) and 3% (gold) also apply. The earlier 12% and 28% slabs have been merged.

What's the difference between CGST, SGST and IGST?+

CGST + SGST apply together on intra-state transactions, splitting equally — 18% becomes 9% CGST + 9% SGST.

IGST is a single component for inter-state and imports. Total tax burden is identical, only destination differs.

Is this calculator free?+

Yes, completely free with no signup or hidden charges. Calculate as many times as you want.

Do I need to register for GST?+

Mandatory once turnover crosses ₹40 lakh for goods (₹20 lakh for services). Inter-state suppliers and e-commerce sellers must register from day one regardless of turnover.

What is Compensation Cess?+

An additional levy on luxury and sin goods (tobacco, aerated drinks) charged on top of regular GST. Under GST 2.0, many cess items moved to the new 40% slab.

What is Input Tax Credit (ITC)?+

ITC lets registered businesses offset GST paid on purchases against GST collected on sales. You only pay tax on the value you added, preventing tax-on-tax cascading.

Is the calculator accurate for invoicing?+

The math is exact and reflects current GST 2.0 rates. For specific item classification, verify with a CA or the official CBIC portal.

Which goods are exempt from GST?+

Daily essentials: fresh fruits, vegetables, milk, eggs, unbranded grains, healthcare, education, books, life and health insurance, 33 life-saving drugs. Alcohol and some petroleum remain outside GST entirely.

Kaisar Ahmad - Web Developer
KA
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Kaisar Ahmad

Senior Web Developer · Tools Creator

10+ years 50+ tools built Free for public

Hi, I'm Kaisar Ahmad — a full-stack web developer with over 10 years of experience building free, easy-to-use tools for the public. I specialize in finance calculators (GST, EMI, SIP, Income Tax) and healthcare tools (BMI, BMR, calorie tracking) that make complex calculations accessible to everyone. My mission is simple: quality utilities, completely free, with no ads or sign-ups.

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Specialization
Finance & Healthcare Web Tools
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Experience
10+ years in web development
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Mission
Free, accurate tools for everyone
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Last Updated
25 April 2026
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Authoritative Sources

Information verified from official Indian government and industry sources

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Editorial Standards Fact-checked by certified CA
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Updated Regularly Reviewed monthly & on rate changes

Disclaimer: This calculator is for informational purposes only. While we strive for accuracy and reflect the latest GST Council notifications, classification of specific items may vary. For invoicing, official filings, or business-critical decisions, please consult a qualified Chartered Accountant or refer to the official CBIC portal.