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GST Split Calculator

Split GST into base amount and tax components

Last Updated: July 2026
Amount including GST
Applicable GST rate
Type of supply
Base Amount
—
Before GST
Total GST
—
GST component
CGST
—
Central GST (if intra-state)

GST Split Breakdown

ComponentAmount

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What Is a GST Split Calculator?

A GST Split Calculator separates the total amount into base price and GST components (CGST, SGST, or IGST). It helps you understand the tax breakdown in invoices and calculate the actual product/service cost.

This calculator is useful for businesses preparing invoices, customers understanding bill components, and accountants reconciling GST payments. It supports both intra-state and inter-state transactions.

GST Split Formula

Base Amount = Total / (1 + GST Rate/100)
GST Amount = Total - Base
Intra-State: CGST = SGST = GST/2
Inter-State: IGST = GST
Total = Amount with GSTBase = Before GSTGST = Tax componentCGST/SGST = Split equally

Frequently Asked Questions

How to split GST from total amount?
Base Amount = Total / (1 + GST Rate/100). GST = Total - Base. For example, ₹1,180 at 18% GST: Base = 1180 / 1.18 = ₹1,000. GST = 1180 - 1000 = ₹180.
What is the difference between CGST, SGST, and IGST?
CGST (Central GST) and SGST (State GST) apply to intra-state sales (within same state). IGST (Integrated GST) applies to inter-state sales (between states). CGST + SGST = IGST for same rate.
What are the GST rates in India?
Four main slabs: 5% (essential goods), 12% (processed goods), 18% (most services and manufactured goods), 28% (luxury items). Some items are exempt (fresh food, education).
How to calculate GST on invoice?
For intra-state: Base + CGST (half rate) + SGST (half rate). For inter-state: Base + IGST (full rate). For example, ₹1,000 at 18% intra-state: 1000 + 90 (CGST) + 90 (SGST) = ₹1,180.
Can I claim GST credit?
Yes, businesses can claim Input Tax Credit (ITC) for GST paid on purchases against GST collected on sales. This reduces net GST liability. ITC is available only if you have valid tax invoices.

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