Free, and there is nothing to sign up to.
Arithmetic a one-person business does often enough to want it right. Each of these keeps its answer in the URL, so a result survives being pasted to someone else.
-
Tax set-aside calculator
An invoice was paid. See what to set aside for GST and income tax, and what is safe to spend.
-
Freelance hourly rate calculator
The floor for your hourly rate, from the salary you want, what the business costs, the weeks you are not working and the hours nobody pays for.
-
GST calculator
Add GST to an amount, or find the GST inside a GST-inclusive one — which is a division by eleven, not 10% off.
-
Late fee calculator
Watch the interest on an overdue invoice tick up, by the day and by the week — at the rate your terms state, and nothing if they state none.
Guides
A number answers what the GST on an amount is. Whether an overseas client is GST-free, or what counts toward the $75,000 threshold, takes a page — with the ATO guidance named beside every claim.
Read the guides