Which countries are supported?

25+ countries including India (GST), UAE (VAT), Saudi Arabia (VAT), UK (VAT), USA (Sales Tax), Australia (GST), Singapore (GST), Canada (HST), Germany (VAT), France (VAT), Japan, and more.

How does Remove GST/VAT work?

Enter the total price including tax and it back-calculates the original amount and tax portion.

What Indian GST rates are supported?

0%, 5%, 12%, 18%, 28%, and 40% — all standard Indian GST slabs.

What's the difference between CGST/SGST and IGST?

CGST + SGST apply to sales within the same state, split equally between the Central and State governments. IGST applies to inter-state sales and is collected in full by the Central government.

How do I find the pre-tax price from a total that already includes GST?

Use the Remove GST mode: divide the total by (1 + rate/100) to get the base amount, then subtract that from the total to get the GST portion.

GST Calculator

Add or remove GST/VAT/Sales Tax from any amount. Supports 25+ countries including India, UAE, UK, USA, Australia, Singapore and more.

Country:

Add or remove GST from any amount. Supports all India GST slabs: 0%, 5%, 12%, 18%, 28%, 40%

Original Amount (INR)

GST Rate (%)

How to Use

1
Choose mode
Select Add GST to add tax, or Remove GST to find the pre-tax amount.
2
Enter amount and GST rate
Enter your amount and select the applicable GST slab.
3
View breakdown
See GST amount, CGST, SGST, and total amount.

How It Works

This calculator adds GST/VAT to a base amount, or works backward from a tax-inclusive total to find the original amount and the tax portion — covering India's GST slabs as well as VAT/sales tax rules for 25+ other countries.

Add GST (exclusive → inclusive)

GST amount = base amount × (rate ÷ 100). Total = base amount + GST amount. For India, this GST amount is then split equally into CGST (Central GST) and SGST (State GST) for sales within the same state, or charged fully as IGST (Integrated GST) for inter-state sales.

Remove GST (inclusive → exclusive)

Base amount = total ÷ (1 + rate ÷ 100). GST amount = total − base amount. This is the calculation you need when a price already includes tax and you want to know the pre-tax value — for example, reading the original price off a retail receipt.

Examples

Adding 18% India GST

Base amount ₹5,000 at 18%: GST = 5,000 × 0.18 = ₹900, split as ₹450 CGST + ₹450 SGST for an intra-state sale. Total payable = ₹5,900.

Removing GST from a receipt total

A receipt shows ₹1,180 total including 18% GST: base = 1,180 ÷ 1.18 = ₹1,000, GST portion = ₹180.

UAE VAT example

AED 2,000 base amount at UAE's standard 5% VAT: VAT = 2,000 × 0.05 = AED 100. Total = AED 2,100.

Common Use Cases

Freelancers and small businesses calculating GST/VAT to add to an invoice
Shoppers reverse-calculating the pre-tax price from a receipt showing only the final amount
Comparing tax burden across countries for cross-border pricing or e-commerce
Checking the CGST/SGST split for intra-state Indian invoices

Tips

Always confirm whether a quoted price is tax-inclusive or tax-exclusive before comparing two prices — a 18%-inclusive price and an 18%-exclusive price on the same base amount differ by the full GST amount.
In India, intra-state sales split GST into CGST + SGST (each half the total rate); inter-state sales instead charge the full rate as IGST to one authority — the invoice treatment differs even though the total tax is the same.
GST/VAT rates change periodically by government notification — double-check the current rate for your specific goods/services (HSN/SAC code) if you're filing returns rather than just estimating.

Frequently Asked Questions

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