GST valuation utility

GST Value of Supply Calculator — Discounts, Subsidies and Pure Agent

Build taxable value from price, non-GST taxes, incidental expenses, subsidies, interest, discounts and pure-agent exclusions.

Calculate taxable value

Related-party, barter, agent, branch-transfer and cost/residual valuation rules require a separate method.
Taxable value
GST
Total invoice value
Educational calculator · Reviewed 14 July 2026 · Official law, portal data and professional judgement prevail. Methodology Editorial policy Legal and disclaimer