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GST Calculator

Calculate GST (Goods and Services Tax) for purchases and sales. Add or remove GST at 0%, 5%, 12%, 18%, 28%, or 40% rates (GST 2.0). Perfect for Indian businesses and invoice calculations.

Popular

GST Calculation

₹

Enter amount without GST

%

GST percentage applicable

⚡ Quick Select GST Rate
📋 GST 2.0 Rate Guide
Effective Sept 22, 2025 • 56th GST Council Meeting
0%Fresh milk, vegetables, eggs, education
EXEMPT
5%Packaged food, edible oil, tea, sugar, footwear ≤₹1K
LOW
12%Butter, cheese, mobile phones, fertilizers
MODERATE
18%Soaps, IT services, telecom, AC restaurants
STANDARD
28%Cars, AC, washing machines, cement
LUXURY
40%Premium cars, yachts, ultra-luxury items
NEW ⚡
💡 Note: GST 2.0 simplified slabs to mainly 5%, 18%, and 40%, with 12% and 28% as transitional categories.

Results

Total Amount
₹1,180.00
In Words: One Thousand One Hundred Eighty Rupees
With GST
Original Amount
₹1,000.00
In Words: One Thousand Rupees
Without GST
GST Amount
₹180.00
In Words: One Hundred Eighty Rupees
at 18%

Breakdown

Base Amount:₹1,000.00
GST (18%):₹180.00
Total:₹1,180.00

Understanding GST Calculation

GST can be calculated in two ways: adding GST to a base amount, or extracting GST from a price that already includes it.

Adding GST

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

Removing GST

Formula: Base Amount = Total Amount / (1 + GST Rate / 100)

🚀

GST 2.0 Reform

📅 Effective September 22, 2025 • 56th GST Council Meeting

The landmark GST 2.0 reform simplified the tax structure by consolidating multiple slabs intothree main rates (5%, 18%, and 40%), while maintaining transitional slabs for certain categories. This reform moved many essential items to lower tax brackets to boost consumption and introduced a new 40% slab for ultra-luxury goods.

GST 2.0 Rate Structure (Effective Sept 2025)

  • 0% (Exempt): Essential items for daily life
    Fresh fruits, vegetables, milk, eggs, unbranded cereals, education services, healthcare services
  • 5%: Food & household essentials MANY ITEMS MOVED HERE ✨
    Packaged food items, edible oil, tea, coffee (not instant), sugar, footwear (up to ₹1,000), economy-class air travel, small restaurants
  • 12%: Processed goods & intermediate products TRANSITIONAL
    Processed food, butter, cheese, ghee, mobile phones, fertilizers, business-class rail travel
  • 18%: Most goods and services STANDARD RATE
    Soaps, toothpaste, hair oil, financial services, telecom, IT services, restaurants (AC), hotels (₹1,000–₹7,500/night), industrial intermediates, most consumer goods
  • 28%: Luxury goods TRANSITIONAL
    High-end cars, motorcycles > 350cc, air-conditioners, washing machines, refrigerators, cement
  • 28% + Cess: Sin goods with additional compensation cess
    Tobacco (12%–290% cess), pan masala, aerated drinks, coal, luxury cars, SUVs (cess varies by category)
  • 40%: Ultra-luxury items NEW IN GST 2.0 ⚡
    Premium imported cars, high-end yachts, certain tobacco categories - replaces multiple cess structures

✨ Key Changes in GST 2.0

📊
Simplification
Main structure now 5%, 18%, and 40% (with 12% and 28% transitional)
💰
Consumer Relief
Many food & household items moved from 12%/18% down to 5%
🏎️
Ultra-Luxury Slab
New 40% rate for premium goods, replacing complex cess structures
💻
Digital Services
Cloud, SaaS, and IT services continue at 18%
🏥
Healthcare & Education
Remain exempt (0%) under all categories
⚠️
Important Notice

GST 2.0 rates are effective from September 22, 2025. Always verify the current rate applicable to your specific product or service category from the official GST portal. For complex cases or business compliance, consult a tax professional.

Frequently Asked Questions

Compare plansRead the guide

Affiliates: Contextual offers only; no pop-ups. Disclosures apply where shown.

Calculate GST (Goods and Services Tax) for India instantly with our free GST calculator. Compute GST amounts, reverse calculate prices, and understand tax breakdowns for different GST rates (5%, 12%, 18%, 28%). Perfect for businesses calculating invoice amounts, consumers understanding tax costs, accountants preparing financial documents, and anyone working with Indian tax calculations. Our calculator supports all GST slabs, handles both inclusive and exclusive pricing, and provides detailed breakdowns showing base price, GST amount, and total price. Whether you're calculating GST on invoices, reverse calculating pre-GST prices, understanding tax components, or preparing financial documents, this tool provides accurate GST calculations with comprehensive tax analysis.

✅ Common Use Cases

  • Calculate GST amounts for invoices and bills
  • Reverse calculate pre-GST prices from total amounts
  • Understand tax breakdowns for different GST slabs
  • Prepare GST-compliant financial documents
  • Calculate GST for both inclusive and exclusive pricing

💡 Key Benefits

  • All GST rates supported (5%, 12%, 18%, 28%)
  • Inclusive and exclusive pricing calculations
  • Reverse GST calculation functionality
  • Detailed tax breakdown with base price and GST amount
  • Mobile-responsive design for on-the-go calculations

How to Use GST Calculator

1️⃣

Choose your calculator

Navigate to the GST Calculator page and familiarize yourself with the input fields.

2️⃣

Enter your values

Input your data into the calculator fields. All inputs are validated in real-time.

3️⃣

View instant results

The calculator instantly displays comprehensive results with detailed breakdowns.

🔬 How GST Calculator Works

📐 Formula

GST Calculator Calculation Formula: The GST Calculator employs validated mathematical formulas and computational algorithms specifically designed for financial calculations involving interest rates, payments, returns, and investment analysis. The calculation process takes your input values and applies industry-standard formulas to produce accurate, reliable results. Each input parameter influences the final result according to established mathematical principles, ensuring consistency and accuracy across all calculations.

Variables:

  • Input Values: The specific data points you provide to the GST Calculator, such as amounts, rates, measurements, or other relevant parameters needed for the calculation
  • Calculation Function: The mathematical formula or algorithm that processes your inputs according to established principles and industry standards
  • Result: The calculated output value, which may include primary results, intermediate calculations, and detailed breakdowns to help you understand the computation

📋 Step-by-Step Calculation Process

1

Gather Required Information

Before using the GST Calculator, identify all the values you need for the calculation. Review the input fields to understand what information is required, including units of measurement, time periods, or other relevant parameters. Having accurate input data ensures reliable results.

2

Enter Your Values

Input your information into the GST Calculator fields. The calculator provides clear labels, helpful placeholders, and real-time validation to guide you. As you type, the calculator checks for valid inputs and highlights any errors immediately, ensuring you enter correct values before calculation.

3

Review and Verify Inputs

Double-check all entered values for accuracy. Verify that numbers are correct, units match (e.g., dollars vs. cents, months vs. years), and all required fields are filled. The calculator will alert you to any missing or invalid inputs before proceeding with calculations.

4

Calculate and Analyze Results

The GST Calculator processes your inputs instantly using validated formulas and algorithms. Results appear immediately with detailed breakdowns, intermediate calculations, and clear explanations. Review all result metrics to fully understand the calculation and its implications for your specific situation.

5

Interpret and Apply Results

Use the detailed result breakdowns and explanations to understand what the calculations mean for your situation. Compare different scenarios by adjusting inputs, and use the insights gained to make informed decisions. The calculator provides context and explanations to help you interpret results accurately.

⌨️ Understanding Input Fields

Primary Input ValuesVaries by calculator type

The main data points required for the GST Calculator calculation. These values typically include amounts, rates, time periods, measurements, or other parameters specific to financial calculations involving interest rates, payments, returns, and investment analysis. Each input field is clearly labeled with its purpose and expected format.

💡 Tip:Ensure all inputs are accurate, use consistent units throughout, and double-check decimal places. The calculator validates inputs in real-time and provides helpful error messages if values are invalid or outside expected ranges.
Additional ParametersVaries

Optional or secondary inputs that may affect the calculation results. These parameters allow you to customize the calculation for your specific needs and compare different scenarios.

💡 Tip:Experiment with different parameter values to see how they affect results. This helps you understand the relationship between inputs and outputs and make more informed decisions.

📊 Understanding Your Results

The GST Calculator delivers comprehensive calculation results with detailed breakdowns and clear explanations. Each result metric is labeled and explained to help you understand not just what the numbers are, but what they mean for your specific situation. The calculator provides context, comparisons, and actionable insights based on financial calculations involving interest rates, payments, returns, and investment analysis principles, enabling you to make informed decisions with confidence.

Key Metrics Explained:

  • Primary Calculation Result: The main output value from the GST Calculator, representing the primary calculation you requested. This result is calculated using validated formulas and algorithms, ensuring accuracy and reliability. Understanding this primary result helps you make informed decisions about financial calculations involving interest rates, payments, returns, and investment analysis.
  • Supporting Calculations: Additional metrics and breakdowns that provide context and deeper insights into the GST Calculator results. These supporting calculations help you understand the complete picture, including intermediate values, percentages, comparisons, and other relevant metrics that enhance your understanding of the primary result.
  • Detailed Breakdowns: Comprehensive explanations and step-by-step breakdowns showing how the GST Calculator arrived at each result. These breakdowns help you verify calculations, understand the underlying formulas, and gain confidence in the results for financial calculations involving interest rates, payments, returns, and investment analysis.

What to Do Next:

  • Review the results carefully to ensure they match your expectations
  • Use the results to make informed decisions or plan next steps
  • Experiment with different input values to see how they affect results
  • Share or save results for future reference if needed

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