GST Calculator India — Instantly Add or Remove GST for FY 2026–27
Professional multi-item GST calculator, invoice generator, and tax breakdown tool.
What is the GST Calculator?
Use this tool to save time and improve your workflow without the need for complicated software. It's completely free, secure, and runs directly in your browser, ensuring your data remains private and handled with speed.
How to Use GST Calculator — Step-by-Step
Choose Mode – Select "Add GST" (base to inclusive) or "Remove GST" (inclusive to base).
Enter Amount – Type the base price or the GST-inclusive total.
Select GST Rate – Choose 5%, 12%, 18%, 28%, or enter a custom rate.
Key Features — Why Use Our Tool?
- ✓ Add GST (Exclusive → Inclusive): Enter a base amount and GST rate to instantly see the GST amount and the final GST-inclusive price.
- ✓ Remove GST (Inclusive → Exclusive): Enter a GST-inclusive MRP or total to find the base price and the exact GST portion.
- ✓ CGST & SGST Breakdown: For intra-state transactions, see how total GST splits into CGST (Central GST) and SGST (State GST) — each at half the total GST rate.
- ✓ All Indian GST Slabs Supported: Quick-select buttons for 5%, 12%, 18%, and 28% GST rates, or enter any custom rate.
- ✓ No Login, No Tracking: Your financial data never leaves your browser.
📊 Use Cases — Who Uses the GST Calculator?
For Small Business Owners
Calculate tax on products for accurate billing/accounting.
For Freelancers
Determine how much GST to charge clients on services.
For Consumers
Identify the actual price of an item by removing hidden taxes.
🆚 GST Calculator vs. Other Online Tools
Frequently Asked Questions
How do I calculate 18% GST on ₹5000?
GST Amount = 5000 × 18 / 100 = ₹900. Final price = 5000 + 900 = **₹5,900**.
How do I remove GST from an inclusive price?
Base Price = Inclusive Price / (1 + GST%/100). Example: ₹5900 / 1.18 = **₹5,000**.
What are the GST slabs in India?
India has four main GST slabs: **5%** (essential goods), **12%** (standard goods), **18%** (most services and manufactured goods), and **28%** (luxury goods). A 0% (nil) slab also exists for exempt goods.
What is the difference between CGST, SGST, and IGST?
For intra-state sales: CGST + SGST = Total GST (each half). For inter-state sales: IGST = Full GST amount.
Can I use this for B2B invoices?
Yes. Use it for any business invoice — retail, wholesale, freelance, or B2B. It gives you all the tax component details needed for GST invoicing.
Does the GST calculator store my data?
No. All calculations run in your browser and are never stored, logged, or shared.
Is there GST on services?
Yes. Most services attract 18% GST in India. Some are at 5% or 12%. Check the GST rate schedule for your specific service category.
Can I calculate GST for a composition scheme?
The composition scheme has different rates (1%, 2%, 5% of turnover). Enter your applicable rate as a custom percentage in this calculator.
📚 Educational Content — Deep Dive
The GST Calculator provides a simplified approach to complex mathematical and financial computations. In today's fast-paced world, having a reliable gst calculator at your fingertips is essential for making informed decisions quickly. Our tool uses optimized algorithms to ensure that every result is accurate to the decimal, whether you're planning your budget or solving academic problems.
When dealing with financial data or personal milestones, security is paramount. This GST Calculator runs 100% client-side, meaning your numbers, interest rates, and personal details are never stored on any server. You get the speed of an app with the security of a localized spreadsheet, ensuring your private calculations remain truly private.
We believe that the best tools should be free and accessible to everyone. That's why we've eliminated mandatory registrations, intrusive ads, and hidden paywalls, allowing you to focus entirely on your task. As the digital landscape evolves, we remain committed to keeping our utilities updated with the latest standards and features. WorldOfTools is your trusted partner for high-performance, privacy-first web utilities that just work.