Calculate NZ sole trader income tax, ACC CoverPlus levies, 3-instalment provisional tax obligations, and recommended Hnry-style invoice set-aside percentages.
Inland Revenue & ACC sole trader statutory parameters
Home office, motor vehicle, software, phone & professional fees
Used for standard uplift method (105% of prior year RIT).
Transferring 21.3% of every invoice into a dedicated tax buffer account guarantees full coverage for Inland Revenue income tax, ACC CoverPlus, and student loan without year-end cash crunch.
Net\ Profit = Gross\ Revenue - Claimable\ Expenses \\
Income\ Tax = \sum (Band_i \times Rate_i) \\
ACC_{CoverPlus} = Profit \times Rate_{CU} + \min(Profit, \$142,283) \times 1.60\% \\
Provisional\ Tax = \begin{cases} Prior\ RIT \times 105\%, & \text{if } RIT > \$5,000 \\ 0, & \text{otherwise} \end{cases} \\
Instalment = \frac{Provisional\ Tax}{3} \quad (\text{28 Aug, 15 Jan, 7 May})Sole traders pay personal income tax on net business profit plus ACC CoverPlus levies (work levy based on industry risk plus 1.60% Earner's levy). If Residual Income Tax exceeds $5,000, IRD mandates Provisional Tax (standard uplift: 105% of previous year's tax) paid in three instalments on 28 August, 15 January, and 7 May.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual Reserve Bank of New Zealand (RBNZ) interest rates, IRD PAYE brackets, ACC Earner's Levy, KiwiSaver regulations, and lender criteria may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult a qualified financial advisor, CPA, or official Inland Revenue documentation prior to executing financial commitments.
Add 15% GST or extract embedded GST using New Zealand's official 3/23 statutory fraction with instant penny precision and multi-item quote builder.
Calculate IRD Schedule 4 Withholding Tax (WT code) deductions on contractor invoices, GST components, net payouts, and end-of-year tax reconciliation.
Расчет объемного веса почтовых и курьерских посылок: (Д × Ш × В) / делитель.