What is GST Calculator India?

GST Calculator India is an online tool that helps businesses, freelancers, shop owners, accountants, and students quickly calculate GST (Goods and Services Tax) on goods and services. This calculator supports both Inclusive GST (GST included in price) andExclusive GST (GST added separately), making it suitable for invoices, quotations, and financial planning.

Unlike basic GST tools, this calculator allows multi-item invoices, discounts, CGST/SGST for intra-state supply, IGST for inter-state supply, round-off adjustments, and PDF invoice export. It is designed to be simple for beginners while powerful enough for professionals.

How to Use GST Calculator India?

• Enter item name, quantity, rate, and discount (if any).
• Select GST rate (0%, 5%, 12%, 18%, or 28%) or enter a custom rate.
• Choose Exclusive mode if GST should be added to price.
• Choose Inclusive mode if price already includes GST.
• Select Intra-State for CGST + SGST or Inter-State for IGST.
• Add more items if required and download a detailed PDF invoice.

GST Calculation Formula

Exclusive GST (GST Added)

GST Amount = (Taxable Value × GST Rate) / 100 Total Price = Taxable Value + GST Amount

Inclusive GST (GST Already Included)

Taxable Value = Total Price × 100 / (100 + GST Rate) GST Amount = Total Price - Taxable Value

GST Calculation Example (India)

Example 1 — Exclusive GST (18%)

Taxable Value = ₹10,000 GST (18%) = ₹1,800 Final Price = ₹11,800

Example 2 — Inclusive GST (18%)

Total Price = ₹11,800 Taxable Value = ₹10,000 GST = ₹1,800

Difference Between CGST, SGST, and IGST

• CGST — Collected by Central Government (Intra-state).
• SGST — Collected by State Government (Intra-state).
• IGST — Collected by Central Government (Inter-state).

This GST Calculator India automatically splits GST into CGST + SGST for intra-state transactions and applies IGST for inter-state transactions.

Inclusive vs Exclusive GST: When to Use Which?

Use Exclusive GST when your base price does not include tax and you need to add GST on top. Use Inclusive GST when the price already includes GST and you need to split the taxable value and GST. This is common for retail price tags or MRP-based pricing.

If you also need to calculate discounts before tax, use the built-in discount field here or try the Discount Calculator for quick scenarios. For VAT-style pricing comparisons, check the VAT Calculator.

GST Rates & HSN/SAC Basics (India)

GST rates commonly used in India are 0%, 5%, 12%, 18%, and 28%. The actual rate depends on the HSN (goods) or SAC (services) classification. If you are unsure, verify the correct rate with your invoice or supplier.

This calculator focuses on accurate GST math and totals. It does not validate HSN/SAC or exemptions, which can vary by product category and time period.

Frequently Asked Questions (FAQs)