Finance · Popular

GST Calculator

Instantly add or remove GST from any amount. Our GST Calculator supports all Indian tax slabs and provides a clear breakdown of CGST, SGST, and IGST for your invoices.

Total GST Amount

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Pre-GST (Net)

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Post-GST (Gross)

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Tax component breakdown

Intra-state supply (within same state)

CGST (9%) —

SGST (9%) —

Inter-state supply (across states)

IGST (18%) —

Base price

GST

Method

How this calculator works

Adding GST is a simple percentage addition. Removing GST (inclusive to exclusive) requires dividing the total amount by (1 + rate) to find the original base price.

Add GST:
GST Amount = (Amount × Rate) / 100
Net Price = Amount + GST Amount

Remove GST:
Base Price = Amount / (1 + (Rate / 100))
GST Amount = Amount − Base Price

Enter the base amount or total invoice amount in rupees.
Select the applicable GST slab (0%, 3%, 5%, 12%, 18%, or 28%).
Choose whether you want to Add GST (exclusive to inclusive) or Remove GST (inclusive to exclusive).
The calculator instantly breaks down the tax into CGST, SGST, and IGST.

Examples

Worked examples

Real numbers, end-to-end results.

Add 18% GST to $10,000

GST: $1,800 · Total: $11,800

CGST = $900, SGST = $900 for intra-state. Or IGST = $1,800 for inter-state.

Remove 12% GST from $1,120 (Inclusive)

Base Price: $1,000 · GST: $120

The original item cost was $1,000 before the 12% tax was applied.

Add 5% GST to $5,000

GST: $250 · Total: $5,250

Common rate for essential goods and food items.

Disclaimer: This calculator provides estimates for informational and educational purposes only. It is not a substitute for professional financial advice, tax planning, or investment guidance. Always consult a qualified financial advisor for decisions affecting your finances. Results depend on the accuracy of inputs provided.

FAQ

Frequently asked questions

What is GST?

GST (Goods and Services Tax) is an indirect tax used in India on the supply of goods and services. It is a comprehensive, multistage, destination-based tax that has replaced many indirect taxes in India.

What are the current GST slabs in India?

India currently has 4 primary GST rates: 5%, 12%, 18% and 28%. There is also a special rate of 3% on gold and 0.25% on rough precious and semi-precious stones, plus some essential items are exempted (0%).

How to calculate GST?

To Add GST: GST Amount = (Original Cost × GST Rate) / 100. Net Price = Original Cost + GST Amount. To Remove GST: GST Amount = Original Cost - [Original Cost × (100 / (100 + GST Rate))].

What is the difference between CGST, SGST, and IGST?

CGST (Central GST) and SGST (State GST) are levied on intra-state sales (within the same state), split equally. IGST (Integrated GST) is levied on inter-state sales (between two different states) and is collected by the Central Government.

Are CGST and SGST always 50% each?

Yes, for any intra-state transaction, the total GST rate is divided equally between the Central Government (CGST) and the State Government (SGST). For example, an 18% GST item will attract 9% CGST and 9% SGST.