Proforma Invoice Calculator
Quote total with GST, freight and advance — the proforma figure plus the balance due against an advance received.
Formula
A proforma is a quotation, not a tax invoice — it can't be used for input tax credit and creates no GST liability by itself. In a composite supply, freight bundled with goods takes the principal good's GST rate. Convert to a tax invoice only on actual supply or advance receipt (which itself triggers GST on services).
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need proforma invoice calculator results fast? Analysts, founders, traders and finance professionals use the Proforma Invoice Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Proforma Invoice Calculator
Quote total with GST, freight and advance — the proforma figure plus the balance due against an advance received. A proforma is a quotation, not a tax invoice — it can't be used for input tax credit and creates no GST liability by itself. In a composite supply, freight bundled with goods takes the principal good's GST rate. Convert to a tax invoice only on actual supply or advance receipt (which itself triggers GST on services). The governing relationship is total = (goods + freight) × (1 + GST); advance = total × advance%. The Proforma Invoice Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Proforma Invoice Calculator
- 1Enter Goods/services value (currency), GST rate (%), Freight / packing (currency), Advance to collect (%) into the Proforma Invoice Calculator.
- 2The result is computed automatically using total = (goods + freight) × (1 + GST); advance = total × advance% — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Proforma Invoice Calculator?
- ✓Computes proforma invoice calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Proforma Invoice Calculator?+
Proforma Invoice Calculator uses total = (goods + freight) × (1 + GST); advance = total × advance%. A proforma is a quotation, not a tax invoice — it can't be used for input tax credit and creates no GST liability by itself. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Proforma Invoice Calculator need?+
Enter Goods/services value (currency), GST rate (%), Freight / packing (currency), Advance to collect (%) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Proforma Invoice Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Proforma Invoice Calculator?+
In a composite supply, freight bundled with goods takes the principal good's GST rate. Convert to a tax invoice only on actual supply or advance receipt (which itself triggers GST on services).
What is the Proforma Invoice Calculator based on?+
The method follows authoritative sources: GST — composite vs mixed supply; proforma practice. The formula and references are shown on the page so you can verify and cite the result.
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