Tax set-aside calculator NZ: sole traders
A sole trader on $90,000 profit sets aside about $406.78 a week for income tax and the ACC earners' levy: about $23.50 in every $100. That leaves about $1,323.99 a week, before stock, loan repayments and equipment.
Type your expected profit. See the income tax and ACC to set aside each week, what's left to pay yourself, and your provisional tax dates. Free, NZ.
How the figure is worked out
Income tax on $90,000 is $19,577.50, using IRD's rates from 1 April 2025. The ACC earners' levy is 1.75% including GST: $1,575.00. Together that is $21,152.50 a year, or about $406.78 a week.
For full-time CoverPlus owners (over 30 hours a week), ACC uses at least $50,501 of earnings in 2026/27. The levy stops at $156,641 of earnings. If you have your ACC invoice, type it in instead.
Provisional tax
Provisional tax applies when last year's residual income tax was more than $5,000. With IRD's standard option you pay last year's tax plus 5%. On $10,220.50 that is about $3,577.18 on each of 28 August, 15 January and 7 May. If you file GST every 6 months you pay 2 instalments: check them in myIR.
What it leaves out
GST, the ACC work levy (unless you type your invoice), other income, tax credits and student loans. It is for sole traders, not companies. General example, not tax, legal or financial advice. Check your figures with your accountant or IRD.