Free tools · Australian tax

Tax calculators

Every figure here runs on the same rate book our working-paper engine reads, so a calculator and a delivered workbook cannot quote you different numbers. Current year is FY2025-26; earlier years have their own page.

Calculators

Why these are free

They are the same arithmetic our software does on the way to a working paper — the part that is a lookup, not a judgement. The judgement is what a tax agent is for, and what BeforeMay is built to hand them a checkable draft of.

See what BeforeMay doesWhere does client data go?