Sole Trader Tax Calculator NZ 2026–27
Estimate tax on net business profit while keeping ACC, GST and provisional tax separate.
Source check 10 October 2026 · General information, not tax advice
Calculate your result
Tax year 2026–27 · New Zealand dollars · results update automatically
Results update automatically
Sole Trader Tax Calculator
- Business revenue
- $120,000.00
- Allowable deductions
- $30,000.00
- Net business profit
- $90,000.00
- Total taxable income
- $90,000.00
- Income tax estimate
- $19,577.50
- Allowable deductions and assessable income are user-confirmed.
- Self-employed ACC, provisional tax, GST and student-loan adjusted income are separate.
2026–27 individual income tax brackets
New Zealand has no general tax-free threshold. Each rate applies only to the income slice in that band.
| Taxable income | Marginal rate |
|---|---|
| $0 – $15,600 | 10.5% |
| $15,600 – $53,500 | 17.5% |
| $53,500 – $78,100 | 30% |
| $78,100 – $180,000 | 33% |
| Over $180,000 | 39% |
How this calculator works
Estimate tax on net business profit while keeping ACC, GST and provisional tax separate.
Formula
Net business profit = revenue − allowable deductions; individual rates apply with other assessable income.
Worked example
GST-inclusive revenue must first be normalised where applicable.
Scope and edge cases
Eligibility, tax codes, certificates, multiple income sources and annual reconciliation can change the final outcome. Missing components are disclosed instead of silently becoming zero.
Frequently asked questions
Is this sole trader tax calculator exact?
The result card says whether the calculation is exact for its supported scope, indicative, missing inputs or unsupported. It never promotes an incomplete rule set as exact.
Does Taxliva store my salary?
No account is required and the interactive calculation runs in your browser.
Which tax year is used?
It uses the New Zealand tax year from 1 April 2026 to 31 March 2027.
Official sources
- Tax rates for individuals — Inland Revenue
- Provisional tax options — Inland Revenue
Rule review
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