Multi-Item GST Bill Builder

What is the Multi-Item GST Bill Builder?

Real invoices often mix items taxed at different GST rates. This GST invoice calculator lets you list every item with its quantity, unit price and rate, and totals the bill the way a GST invoice must show it.

Enter one item per line and choose intra-state or inter-state supply. The result shows the taxable value, total GST, the CGST/SGST or IGST split, GST grouped by rate, and an itemised table.

How to use the Multi-Item GST Bill Builder

1. Items (one per line: name, quantity, unit price, GST %) — one item per line: name, quantity, unit price, GST %. (sample: Consulting hours, 10, 2000, 18 Printed brochures, 500, 12, 18 Rice (branded), 20, 60, 5)
2. Type of Supply (sample: Within the state (CGST + SGST))
3. Press Build GST Bill (results also refresh as you type). The result card shows the Invoice Total, along with Taxable value, Total GST, Tax split and GST by rate.

Formula used

Invoice total = Σ (Quantity × Unit price) × (1 + Rate ÷ 100)

• Taxable value = Σ quantity × unit price
• GST by rate = Σ taxable value of items at that rate × rate

Discounts shown on the invoice should be deducted from the unit price before GST.

Worked example

These are the sample values already filled in the calculator above, and the result it returns for them:

Tips for using the Multi-Item GST Bill Builder

• A tax invoice must show your GSTIN, the buyer's GSTIN (for B2B), HSN/SAC codes and the place of supply.
• E-invoicing is mandatory for businesses above ₹5 crore annual turnover.
• Round the tax per invoice, not per line, to avoid paise differences.