Calculate GST Instantly
India-focused GST calculator supporting all slabs. Calculate exclusive, inclusive, or reverse GST with CGST/SGST breakdown.
Calculate GST to add on base price
Enter an amount to see the GST breakdown
About GST Slabs in India
Essentials, food items, transport
Processed food, computers
Most services, electronics
Luxury items, cars, tobacco
Understanding GST in India
Goods and Services Tax (GST) is India's unified indirect tax that replaced multiple taxes like VAT, Service Tax, and Excise Duty. Understanding how to calculate GST is essential for businesses and consumers alike.
GST Exclusive
Calculate total price by adding GST to your base product/service cost.
GST Inclusive
Find original price and GST amount from total price including GST.
From GST Amount
Calculate base price and total when you know only the GST amount.
GST Tax Slabs Explained
5% GST Slab
Essential items including packaged food, life-saving medicines, transport services, small restaurants, and basic household items.
12% GST Slab
Processed foods, computers, mobile phones, business class air travel, and certain machine parts.
18% GST Slab
Most services and products including electronics, financial services, restaurants in hotels, and IT services.
28% GST Slab
Luxury items, automobiles, tobacco products, aerated drinks, and five-star hotel services.
GST Calculator FAQ
What is the difference between CGST and SGST?
For intra-state transactions, GST is split equally between CGST (Central GST) and SGST (State GST). Each gets half of the total GST amount. For inter-state sales, IGST applies instead.
Can I use custom GST rates?
Yes! While we provide the standard 5%, 12%, 18%, and 28% slabs, you can enter any custom rate for special cases or composition schemes.
Is this calculator accurate for official invoicing?
This calculator uses standard GST formulas and is accurate for reference and verification. For official invoices, always cross-verify with your accounting software or a tax professional.
Is my data secure?
Absolutely. All calculations are performed locally in your browser. No data is sent to any server — your financial figures remain completely private.