Add or remove GST instantly. Split CGST, SGST & IGST for accurate invoices — built for Indian e-commerce sellers.
Type your amount and choose a GST rate to see the CGST / SGST / IGST breakdown and total.
Get accurate, invoice-ready GST numbers in seconds — no formulas, no spreadsheets.
Switch between adding GST to a base price and removing GST from a tax-inclusive price (reverse GST). Get the base amount, tax, and total in real time as you type.
Automatically split the tax for intra-state sales (CGST + SGST) or inter-state sales (IGST). Get the exact breakdown you need for a GST-compliant invoice.
One-tap presets for every Indian GST slab — 0%, 3%, 5%, 12%, 18% and 28% — plus a custom rate field for special cases and cess-adjusted calculations.
Perfect for Amazon, Flipkart and Meesho invoicing. Pair it with our HSN Code Finder to get the right rate, then with the Profit Calculator to protect your margins.
Everything an Indian e-commerce seller needs to invoice with the right tax.
GST (Goods and Services Tax) is India's unified indirect tax charged on the supply of goods and services. To add GST, you multiply the base price by the applicable rate and add it back — so ₹1,000 at 18% becomes ₹1,000 + ₹180 = ₹1,180.
Every invoice you raise as a registered seller must show the correct GST amount and rate. Getting it right keeps your GSTR filings clean and prevents tax collected from eating into your margins.
For a sale within the same state (intra-state), GST is split equally into CGST (collected by the Centre) and SGST (collected by the State) — an 18% rate becomes 9% CGST + 9% SGST. For a sale between two different states (inter-state), the full rate is charged as a single IGST.
This calculator detects your supply type and shows the exact CGST/SGST or IGST breakdown, so your invoice matches what the GST portal expects.
Sometimes your marketplace price already includes GST and you need to work backwards to find the base value — this is called reverse or GST-inclusive calculation. The formula is Base = Total ÷ (1 + Rate ÷ 100).
For example, a ₹1,180 MRP that includes 18% GST has a base of ₹1,000 and ₹180 of tax. Use the 'Remove GST' mode above to extract the base and tax from any inclusive price instantly.
18% added on the base amount
18% extracted from an inclusive price
A quick reference to the standard GST rates and the kinds of products that fall under each slab.
Not sure which slab your product falls under? Find its HSN code and exact GST rate in seconds.
Find HSN CodeGST rates are set by the Government of India and can change. Verify the exact rate for your product on the official CBIC-GST portal before filing.
Everything you need to know about using Sellermitra for your Amazon, Flipkart, Meesho, Myntra & Shopify listings.
Still have questions? Contact our support team
Sellermitra is an AI product listing generator that creates SEO optimized titles, bullet points, descriptions, and backend keywords to help you rank higher and sell more.