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GST calculator
Add GST to a net price or strip it out of an inclusive one, at any of the four slabs. It shows the taxable value, the GST, and whether the tax splits into CGST and SGST or lands as a single IGST — depending on where you supply.
Amount and rate
GST is added on top of this figure.
The slab depends on the goods or service — 5, 12, 18 or 28%.
Add GST to a net price, or remove it from an inclusive one.
Same state splits into CGST + SGST; different states is a single IGST.
Total incl. GST
₹1,18,000.00
GST @ 18% = ₹18,000.00
You just split one invoice by hand.
Taxlabs raises GST-correct invoices for you — right slab, right CGST/SGST or IGST split, flowing straight into your GSTR-1.
Frequently asked
What is the difference between CGST, SGST and IGST?
On a supply within a state, GST is split equally between the Central Act (CGST) and the State Act (SGST) — 18% becomes 9% plus 9%. On a supply between two states it is charged as a single Integrated GST (IGST) at the full rate. The total tax is identical; only which government collects which half changes.
Which GST rate applies to my product?
Most goods and services fall into 5%, 12%, 18% or 28%, with 18% the most common. Essentials are often 5% or nil, and a handful of luxury and sin items attract 28% plus cess. Check the HSN or SAC code for your specific item — the calculator lets you try each slab.
How do I work out the GST inside an inclusive price?
Switch to "Remove GST" mode. The net value is the inclusive price divided by (1 + rate/100), and the GST is the difference. For example, ₹1,180 at 18% is ₹1,000 net plus ₹180 GST.
Is GST charged on the full amount?
GST is charged on the taxable value — the price of the goods or service before tax. In "Add GST" mode you enter that net value and GST is added on top; in "Remove GST" mode you enter the tax-inclusive price and the taxable value is derived from it.
Related tools
GST late fee & interest
Late fee per day per Act, capped by your turnover band, plus 18% interest on the tax paid in cash — for GSTR-1, GSTR-3B, GSTR-9 and CMP-08.
Composition vs regular
1% flat with no input credit against normal rates with credit — and the customer question that actually decides it.
Coming soonRegistration threshold
₹40 lakh, ₹20 lakh or ₹10 lakh — it depends on your state and on goods versus services.
Coming soonUses the standard GST slabs (5, 12, 18 and 28%). Compensation cess on specific goods is not applied. Nothing you type is sent to us or stored.