GST Calculator — Add & Remove GST with Full CGST & SGST Breakdown
Calculate GST instantly for any price. Add GST to get the final invoice amount, or remove GST from an inclusive price to find the base cost. Supports all Indian GST slabs — 5%, 12%, 18%, 28% — plus custom rates. Free, no login, browser-only.
⚡ All calculations happen in your browser. Zero data stored.
💰 Tax Breakdown
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🕒 Recent Calculations
How to Calculate GST Instantly
Enter Base Amount — Type the net price of your product or service. Our calculator supports large business values and small retail prices with 100% precision.
Select Tax Slab — Choose from the standard Indian GST slabs: 5%, 12%, 18%, or 28%. You can also enter a custom percentage for international tax calculations.
Add or Remove GST — Use "Add GST" to find the total inclusive price, or "Remove GST" to extract the tax amount from a final sticker price.
Copy Results — Get an instant breakdown of CGST, SGST, and the total tax amount. Perfect for generating accurate invoices or filing GST returns.
Inclusive vs. Exclusive GST
Understanding the difference is vital for business accounting. Exclusive GST means the tax is added on top of the base price. Inclusive GST means the tax is already part of the final price you see on the shelf. Our tool handles both workflows with a single click.
📊 Manual Calculation Formula
To Add GST: [Base Price × (1 + GST% / 100)]
To Remove GST: [Total Price − (Total Price / (1 + GST% / 100))]
Simplified Tax for Business & Freelancers
Invoicing clients accurately is the foundation of a professional business. The WorldOfTools GST Calculator is designed to eliminate manual errors that lead to accounting discrepancies. By providing a clear split between CGST (Central GST) and SGST (State GST), we ensure your billing is compliant with current Indian tax laws.
Universal Utility: While optimized for India, our "Custom GST" feature makes this tool compatible with VAT in the UK, Sales Tax in the US, and GST in Australia or Canada.
Frequently Asked Questions
What are the current GST slabs in India?
The standard GST slabs in India are 5%, 12%, 18%, and 28%. Essential items are often in the 5% slab, while luxury goods fall under the 28% bracket. Services generally fall under the 18% slab.
How is CGST and SGST calculated?
For intrastate transactions, the total GST is split equally (50/50) between the Central Government (CGST) and the State Government (SGST). Our calculator shows this breakdown automatically.
Can I calculate GST inclusive prices?
Yes! Simply enter the total amount and click the "Remove GST" button. The tool will "reverse calculate" to find the original base price and the tax component hidden within the total.
Is this calculator updated for 2025-26?
Yes. The mathematical logic for GST remains consistent. As long as the tax slabs (5, 12, 18, 28) are used by the government, this calculator provides 100% accurate results for the current financial year.
Essential Business Utilities
Verified Tax Compliance Audit
Algorithm synced with CBIC (India) standards. Guaranteed accuracy for CGST/SGST splitting. Last System Audit: May 2026.