GST Calculator
Free online GST calculator for India. Add GST to a price or remove GST from an inclusive amount, with CGST, SGST and IGST breakup at any rate.
From 22 September 2025, most goods and services fall under the 5% and 18% slabs, with 40% for specified goods. Always confirm the rate for your HSN/SAC code.
How to use the GST Calculator
- Enter the amount.
- Choose whether the amount excludes or includes GST.
- Select a GST rate or type a custom rate.
- See the net amount, GST amount and the CGST / SGST or IGST split instantly.
Frequently asked questions
How do I add GST to a price?
Multiply the price by the GST rate and add it to the price. For example, ₹1,000 at 18% GST: ₹1,000 × 18% = ₹180, so the total is ₹1,180.
How do I remove GST from an inclusive price?
Divide the inclusive price by (1 + rate). For ₹1,180 at 18%: ₹1,180 ÷ 1.18 = ₹1,000 net, and GST is ₹180.
What is the difference between CGST, SGST and IGST?
For a sale within the same state, GST is split equally into CGST (central) and SGST (state). For a sale between two states, the full GST is charged as IGST.
Which GST rate applies to my product?
Rates depend on the HSN or SAC code of the goods or service. Please confirm the current applicable rate on the official GST portal or with your tax advisor.
More free tools
Free Website Audit
Instant score for your website's SEO, speed, mobile-friendliness, security and lead capture.
GST Invoice Generator
Create professional GST invoices with line items, taxes and your logo. Download as PDF.
QR Code Generator
Create QR codes for links, WhatsApp, UPI payments, Wi-Fi and contact cards. Download PNG or SVG.
Let’s build something great together.
Share your idea or challenge. We’ll recommend the right approach, timeline and a clear quote — free, with no obligation.