🇮🇳 India GST Tool

GST Calculator

Instant GST with CGST, SGST & IGST split. All slabs. Reverse GST. Multi-item bill. Free, no login.

Enter base price (before GST) — we'll calculate GST and total payable amount.

Know the final GST-inclusive price? Enter it below to extract the original base price and exact GST charged.

Add multiple items with different GST rates — get a complete GST bill with grand total.

Item DescriptionQtyRate (₹)GST %GST ₹Total ₹
₹0.00 ₹0.00

Why Use Our GST Calculator?

Trusted by small businesses, freelancers & accountants across India

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All GST Slabs

0%, 0.25%, 3%, 5%, 12%, 18%, 28% — plus custom rate for special cases

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CGST + SGST + IGST

Auto-splits for intra-state (CGST+SGST) and inter-state (IGST) transactions

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Reverse GST

Know the MRP? Extract exact base price and GST component instantly

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Multi-Item Bill

Add unlimited items with mixed GST rates, get print-ready grand total

How It Works

Calculate GST in 3 Steps

1

Enter Amount

Type your base price or MRP — whatever you have at hand.

2

Select GST Slab

Pick from quick-select buttons (5%, 12%, 18%, 28%) or enter a custom rate.

3

Get Full Breakdown

Instant CGST, SGST, IGST split with exact amounts and total payable.

Frequently Asked Questions

What is CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) are levied equally on intra-state (within same state) transactions — each is 50% of total GST. IGST (Integrated GST) is charged as a single tax on inter-state transactions and collected by the Central Government.
How is GST calculated on exclusive price?
GST Amount = Base Price × (GST Rate ÷ 100). Total = Base Price + GST. Example: ₹10,000 base with 18% GST → GST = ₹1,800, Total = ₹11,800.
How to do reverse GST calculation?
Base Price = Total Price × 100 ÷ (100 + GST Rate). Example: MRP ₹11,800 with 18% GST → Base = 11800 × 100 ÷ 118 = ₹10,000.
What are the current GST slabs in India?
India has 6 main GST slabs: 0% (essential goods like food grains), 5% (basic items, transport), 12% (processed foods, textiles), 18% (most goods & services, standard rate), 28% (luxury/sin goods). Special rates of 0.25% for diamonds and 3% for gold also apply.
Is this tool free and private?
Yes, 100% free. All calculations happen in your browser — no data is sent to any server. No login, no account, no limits.

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