Exclusive vs inclusive — which should I pick?

If the number on your invoice is before GST, choose exclusive. If the price already includes GST (many MRPs and restaurant bills), choose inclusive. Wrong mode doubles or halves the tax.

How do I split GST for same-state sale?

Rate divides equally: half CGST, half SGST. Interstate sale: full rate as IGST. Total tax rupees stay the same; only the invoice heads change.

Can I use this for multiple GST rates in one bill?

No. Enter one rate at a time. Mixed-rate invoices (e.g. 5% food + 18% service charge) need separate line items calculated individually.

GST Calculator

Work out GST on a price — add tax or back it out of a total

GST Details

GST Calculation Type

Add GST to the amount

Net Amount (₹)

GST Rate (%)

GST Type

CGST + SGST (within same state)

Total Amount (with GST)

₹0.00

Net Amount:₹0.00

GST Amount:₹0.00

Total:₹0.00

GST Breakdown

Net Amount₹0.00

GST Rate18%

CGST (9.00%)₹0.00

SGST (9.00%)₹0.00

Total GST Amount₹0.00

Final Amount₹0.00

Amount Breakdown

Net Amount0.0%

GST Amount0.0%

Invoice lines

Net Price:₹0.00

+ CGST @ 9.00%:₹0.00

+ SGST @ 9.00%:₹0.00

Total Amount:₹0.00

About GST

What this calculator does

Figures out how much GST is on a price and splits it into CGST/SGST for within-state sales or IGST for interstate sales. Pick whether your input is before tax (exclusive) or already includes tax (inclusive).

How it works

Exclusive: GST = base × rate ÷ 100; total = base + GST. Inclusive: total is your input; base = total × 100 ÷ (100 + rate); GST = total − base.

Example: ₹10,000 at 18% exclusive → GST ₹1,800, total ₹11,800. Same transaction entered as inclusive at ₹11,800 → base ₹10,000, GST ₹1,800. Intra-state: CGST and SGST ₹900 each.

Exclusive vs inclusive

MRPs and restaurant bills are usually GST-inclusive — the tag price already contains tax. B2B invoices often quote an exclusive base and add GST on top. Switching the calculation type changes what the amount field means, so re-enter the figure if you toggle between modes.

CGST, SGST, and IGST

Seller and buyer in the same state: tax is split equally into CGST (Centre) and SGST (State). Different states: the full rate applies as IGST. The total tax amount is the same; only the heads on the invoice change.

Common GST rates

• 0% — essentials such as fresh food and milk
• 5% — basic household goods
• 12% — processed foods, some electronics
• 18% — most services and manufactured goods
• 28% — luxury and demerit items

Some items also attract cess on top of GST. This tool uses the single rate you enter.

Before you invoice

Confirm the HSN/SAC code and applicable rate for your product — slabs differ by item. Rounding on invoices may differ slightly from this calculator. Registered businesses must show GSTIN, place of supply, and the correct tax head on every bill.

Disclaimer: Figures are estimates for a single rate. Actual tax depends on the item, place of supply, and how your billing software rounds.

Questions & answers

Exclusive vs inclusive — which should I pick?: If the number on your invoice is before GST, choose exclusive. If the price already includes GST (many MRPs and restaurant bills), choose inclusive. Wrong mode doubles or halves the tax.
How do I split GST for same-state sale?: Rate divides equally: half CGST, half SGST. Interstate sale: full rate as IGST. Total tax rupees stay the same; only the invoice heads change.
Can I use this for multiple GST rates in one bill?: No. Enter one rate at a time. Mixed-rate invoices (e.g. 5% food + 18% service charge) need separate line items calculated individually.

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