Does this calculator send my amounts to any server?

No. All GST calculations run entirely in your browser using JavaScript. No data is transmitted or stored anywhere.

Which GST rates does this cover?

The tool covers all standard rate slabs effective for FY 2024-25 — 0% (exempt), 0.25% (rough/semi-precious stones), 3% (gold/silver/articles), 5%, 12%, 18% and 28%. Cess (e.g. on tobacco, aerated drinks, luxury cars) is not included.

What is the difference between CGST, SGST and IGST?

For intra-state supplies, GST is split equally between CGST (Central) and SGST/UTGST (State/Union Territory) — each at half the slab rate. For inter-state supplies, the full slab rate is charged as a single IGST (Integrated GST).

How do I calculate 18% GST on ₹10,000?

In add mode, GST = 10,000 × 0.18 = ₹1,800, so the total payable is ₹11,800. For an intra-state supply this splits into CGST ₹900 + SGST ₹900; for inter-state it is a single IGST of ₹1,800.

How do I extract GST from an inclusive price?

Divide the inclusive amount by (1 + rate). For an ₹11,800 price at 18%, the base is 11,800 ÷ 1.18 = ₹10,000 and the GST component is ₹1,800. Choose "Extract GST from amount" to do this automatically.

Which goods fall under the 28% GST slab?

The 28% slab covers luxury and sin goods — for example tobacco products, aerated drinks, and high-end cars. Some of these also attract an additional compensation cess, which this calculator does not include.

India GST Calculator — All Rate Slabs (5%, 12%, 18%, 28%)

India GST calculator — all slabs, add or extract, intra/inter-state

Enter an amount in Indian Rupees, pick the applicable GST rate slab, and choose whether you want to add GST to a base price or extract GST from an already-inclusive price.

It is for shopkeepers, freelancers, accountants and buyers who need a fast, correct GST figure and the CGST/SGST/IGST split for an invoice.

How it works

In add (exclusive) mode the amount you type is the base price: GST = base × rate and total = base + GST. In extract (inclusive) mode the amount is already tax-inclusive: base = total ÷ (1 + rate) and GST = total − base. The GST is then split by supply type — for intra-state supplies it divides equally into CGST and SGST/UTGST (each at half the slab rate); for inter-state supplies the whole amount is a single IGST.

Example

Enter ₹10,000 at the 18% slab in add mode for an intra-state supply: GST = 10,000 × 0.18 = ₹1,800, total payable = ₹11,800, split into CGST ₹900 and SGST ₹900. Switch to inter-state and the same ₹1,800 becomes a single IGST.

The tool then splits the result into:

CGST + SGST/UTGST for intra-state supplies (each at slab rate ÷ 2)
IGST for inter-state supplies (full slab rate)

Rate slabs covered (FY 2024-25):

Slab	Typical goods / services
0%	Fresh produce, most unpackaged food, healthcare, education
0.25%	Rough and semi-precious stones
3%	Gold, silver, jewellery
5%	Essential packaged food, transportation, some services
12%	Processed food, apparel >₹1,000, some financial services
18%	Most services (IT, hotels, restaurants), electronics
28%	Luxury, sin goods (tobacco, aerated drinks, luxury cars)

Compensation cess (applicable on some 28% items) is not included. All processing is 100% client-side — your data never leaves your browser. For guidance only; verify current rates with a tax professional.