How GST Calculator works
GST is calculated from the entered amount and GST rate, with the tool separating tax from the base amount where applicable. Tax treatment can depend on the transaction and jurisdiction.
Calculate Goods and Services Tax (GST), CGST, SGST, IGST splits, and tax-exclusive or tax-inclusive amounts.
Calculate GST additions, extractions, and CGST / SGST / IGST tax splits
A fast client-side GST calculator. Easily calculate GST additions, extractions, and tax splits (CGST + SGST vs. IGST) across standard tax rates (5%, 12%, 18%, 28%).
Choose calculation mode: 'Add GST' (Exclusive to Gross) or 'Remove GST' (Inclusive to Net).
Select your Supply Type: 'Intra-State' (splits into CGST and SGST) or 'Inter-State' (computes IGST).
Enter the base price or total invoice amount.
Click a standard tax rate slab (5%, 12%, 18%, 28%) or type a custom percentage.
Review the detailed tax breakdown and click 'Copy Summary' to copy calculations to your clipboard.
Dual mode: Exclusive (Add GST) & Inclusive (Remove GST)
Automatic CGST / SGST (50/50 split) and IGST (100% integrated tax) handling
Pre-configured standard GST slabs (0.25%, 3%, 5%, 12%, 18%, 28%)
Multi-currency support (INR, AUD, CAD, USD, SGD, NZD, EUR, GBP)
Instant summary copying for invoice generation
Browser-based calculation without intentionally uploading the entered amounts to UtilsDesk servers
GST is calculated from the entered amount and GST rate, with the tool separating tax from the base amount where applicable. Tax treatment can depend on the transaction and jurisdiction.
Tax calculations are mathematical estimates only. Applicable rates, exemptions, filing rules and transaction treatment vary by jurisdiction and circumstance; verify important tax decisions with the relevant authority or a qualified professional.
This tool is designed to perform its main calculation or transformation in your browser. Do not enter information that the tool does not need, and review the site's Privacy Policy for analytics, advertising and third-party services.
Answers about how the tool works, its limitations, and how your information is handled.
CGST (Central GST) and SGST (State GST) apply to intra-state sales (within the same state) and split the tax equally 50/50. IGST (Integrated GST) applies to inter-state sales (between two different states).
To Add GST (Exclusive): Net Price x (1 + GST Rate / 100). To Remove GST (Inclusive): Net Price = Gross Price / (1 + GST Rate / 100).
The calculator performs the arithmetic needed to add or remove a tax percentage, but tax systems differ by jurisdiction. Australia and Canada have additional rules, taxes and exemptions that this calculator does not determine; verify tax treatment against the applicable authority or a qualified professional.
No. The result is a mathematical estimate for planning or educational purposes. Actual financial or tax outcomes depend on the terms, rules and circumstances that apply to you.
This tool is designed to perform its main calculation or transformation in your browser. Do not enter information that the tool does not need, and review the site's Privacy Policy for analytics, advertising and third-party services.
Continue with related UtilsDesk tools for the same type of task. Each tool has its own instructions, examples, methodology notes, and limitations.