GST Calculator India — Calculate GST Amount Instantly (2026)

GST Calculator India — Calculate GST Amount Instantly (2026)

What is This Calculator?

Use our free GST Calculator to instantly calculate the GST amount and total price for any product or service. Simply enter the original price and select the applicable GST rate (5%, 12%, 18%, or 28%) to get your result in seconds.

💰 GST Calculator India

Total Amount (Incl. GST)

Original Amount
CGST (50%)
SGST (50%)
Total GST
Total Payable

Who Should Use This Calculator?

This calculator is useful for Indian business owners, freelancers, e‑commerce sellers, and shopkeepers who need to quickly calculate GST‑inclusive or GST‑exclusive prices for invoices, quotations, and tax filings.

Frequently Asked Questions

Which GST rate applies to software services in India?

Most software and IT services in India attract an 18% GST rate. SaaS subscriptions, consulting, and professional digital services all fall under the 18% slab.

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Disclaimer: All calculators on Global Info Wiki are provided for informational and educational purposes only. Results are estimates and should not be used as professional financial, legal, or tax advice. Always consult a qualified professional for your specific situation. — Global Info Wiki

Hemant - Author at Global Info Wiki

BUILT BY

Hemant

Software Engineer with 3.5+ years of experience building B2B tools and digital utilities. All calculators on Global Info Wiki are built and tested by Hemant to ensure accurate, real‑world results.

💻 Software Engineer ✍️ Content Writer 🚀 3.5+ Years Experience

How to Use the GST Calculator

  1. Enter the base price of your product or service (excluding GST).
  2. Select the GST rate — 5%, 12%, 18%, or 28% depending on your item category.
  3. Click Calculate — you will instantly see CGST, SGST (or IGST), and total price.
  4. Use the result for invoicing, filing GST returns, or price comparison.

Frequently Asked Questions — GST Calculator

What is GST and why is it important?

GST (Goods and Services Tax) is India's unified indirect tax that replaced VAT, service tax, and excise duty in 2017. Every registered business must collect GST from customers and deposit it with the government. Correct GST calculation prevents penalties during GST return filing.

What are the different GST slabs in India?

India has four primary GST slabs: 5% (essential goods like edible oil, sugar), 12% (processed food, business class travel), 18% (most goods and services, electronics, restaurants), and 28% (luxury goods, automobiles, tobacco).

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

For intra-state transactions, GST is split into CGST (Central) and SGST (State) — each half the total rate. For inter-state transactions, IGST (Integrated GST) applies at the full rate. Our calculator automatically handles both scenarios.

Can I calculate reverse GST (inclusive price)?

Yes. If you know the GST-inclusive price and want to find the original base price, use our reverse GST formula: Base Price = Inclusive Price ÷ (1 + GST Rate/100). The calculator supports both inclusive and exclusive modes.

Pro Tips for GST Compliance

  • Always verify the HSN/SAC code for your product to apply the correct GST rate.
  • File GSTR-1 and GSTR-3B on time to avoid late fees of ₹50/day (₹20/day for nil returns).
  • Maintain digital records of all invoices for at least 6 years as per GST rules.
  • Use input tax credit (ITC) to offset GST paid on purchases against GST collected on sales.

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