Baseline (KS 0%, no SL)
$17,242
Baseline take-home
🇳🇿 New Zealand2026/27IRD≈ $1,667/mo turnover
Sole trader tax on $20,000 New Zealand turnover
This page models New Zealand sole-trader tax on $20,000 annual turnover with NZ$0 expenses (2026/27). With KiwiSaver opted out and no student loan: taxable profit $20,000, income tax about $2,408, ACC earner levy about $350, take-home about $17,242. That turnover is about $1,667/month before tax. Use the calculator below to add expenses, KiwiSaver, or student loan.
By Sammy S. · Founder · AuthorUpdated for 2026
$17,242
Take-home
$2,408
Income tax
$350
ACC earner
No
GST flag
Baseline (NZ$0 expenses, KS opted out)
$17,242
Tax $2,408 · ACC $350 · 13.8% effective
With student loan (same turnover)
$17,242
SL $0 · 13.8% effective
Adjust expenses, KiwiSaver, or student loan
Pre-filled with $20,000 turnover and NZ$0 expenses. Toggle KiwiSaver or student loan below.
Sole trader inputs (NZD)
Enter turnover and expenses — we model income tax, ACC earner levy, GST likelihood, and provisional tax
$
GST-exclusive tax base. GST registration flag uses turnover vs $60,000 unless you override.
$
Allowable business costs — capped at turnover in this model.
Default is opted out (0%).
Include compulsory student loan when applicable
Need invoice GST maths? See the New Zealand GST calculator or the New Zealand paycheck calculator.
Take-home (NZD)
$17,242
from $20,000 taxable profit
Total tax
$2,758
13.8% of profit
GST flag
No
registration
Effective rate
13.8%
tax ÷ profit
Tax breakdown
Taxable profit$20,000
Income tax$2,408
ACC earner levy$350
GST registration likelyNo
ACC work levyNot modelled
Take-home$17,242
- • ACC earner levy is included. ACC work levy by industry classification is not modelled (no industry rates in this tool).
- • Not PAYE employment withholding — annual liability model for sole traders / contractors.
How to use
1
Enter turnover (NZD)
Gross business income for the year — GST-exclusive tax base in this model.
2
Add deductible expenses
Allowable business costs reduce taxable profit (capped at turnover).
3
Choose KiwiSaver & student loan
Optional KiwiSaver employee rate (default opted out) and student loan repayments.
4
Review take-home & flags
Income tax, ACC earner levy, GST registration likelihood, and provisional tax hint.
GST maths
This tool flags GST registration likelihood only. Use the GST calculator to add or remove the IRD 15% rate on invoice amounts.
GST Calculator New ZealandSole trader hubWhat we model
Taxable profit
Turnover − deductible expenses
Income tax (PAYE bands)
IRD progressive individual rates + IETC where applicable
ACC earner levy
1.75% up to $156,641
ACC work levy
Not modelled (industry rates excluded)
Student loan (optional)
12% above $24,128
The take-home and tax figures above come from the turnover, expenses, and options you enter—not a third-party feed. We treat taxable profit as turnover minus deductible expenses, then apply the same New Zealand PAYE + ACC earner levy engine used for employment modelling. GST registration likelihood and provisional-tax instalment hints use published IRD thresholds. Below are the formulas, steps, and a worked example from the same engine as the live calculator.
Worked example
$20,000 turnover, $0 expenses, KiwiSaver 0%, student loan off, 2026/27
| Annual turnover | $20,000 |
| Expenses | $0 |
| Taxable profit | $20,000 |
| Income tax | $2,408 |
| ACC earner levy | $350 |
| Take-home | $17,242 |
| GST registration likely | No |
| Provisional hint / instalment | — |
| Effective tax rate | 13.8% |
- Turnover $20,000 − expenses $0 = taxable profit $20,000
- $2,408 income tax + $350 ACC earner levy = $2,758 total tax (13.8% of profit)
- $20,000 − $2,758 tax = take-home $17,242
- ACC work levy not modelled (industry rates excluded)
Formulas
- Taxable profit: Turnover − deductible business expenses (expenses capped at turnover)
- Income tax (PAYE bands): Progressive IRD individual rates on taxable profit, less Independent Earner Tax Credit where applicable (full credit $520 between $24,000 and $66,000)
- ACC earner levy: 1.75% of liable earnings up to $156,641 (max levy $2,741.22)
- KiwiSaver / student loan (optional): KiwiSaver employee rate when selected (default opted out at 0%); student loan 12% on income above $24,128 when enabled
- Take-home: Taxable profit − income tax − ACC earner levy − optional KiwiSaver − optional student loan (additive rounded lines)
- ACC work levy: Not modelled — industry classification rates are not in this tool
- GST registration flag: Likely when turnover ≥ $60,000 (IRD), or when you override “GST registered”. Standard GST rate 15% shown for education; collected/remitted GST not modelled.
- Provisional tax hint: Educational three equal instalments when income tax (RIT proxy) exceeds $5,000 — not IRD standard uplift, estimation, or AIM
Calculation steps
- Compute taxable profitTurnover − expenses
Expenses cannot exceed turnover. Profit is the base for income tax and ACC earner levy.
- Apply optional deductionsKiwiSaver rate · student loan toggle · GST registered override
Same PAYE engine options used for New Zealand employment modelling; KiwiSaver defaults to opted out (0%).
- Run income tax + ACC earner levyPAYE brackets, IETC, ACC earner levy, optional KiwiSaver/student loan
Uses published IRD rates for tax year 2026/27.
- Flag GST and provisional taxGST if turnover ≥ $60,000 (or override); provisional hint when income tax > $5,000
Flags are educational likelihoods — not GST ledgers or IRD provisional notices.
- Return take-home and notesTake-home, tax lines, GST/provisional notes, ACC work levy exclusion
Component lines are rounded to whole NZD; take-home uses additive total tax for display consistency.
We model sole-trader trading profit under standard individual PAYE rates—not company structures, trusts, partnership splits, or GST collected/remitted ledgers. ACC work levy by industry classification is excluded (no industry rates here). Provisional instalment amounts are educational thirds of income tax when residual income tax likely exceeds the IRD gate—not standard uplift, estimation method, or AIM. Results are planning figures for education, not IRD advice.
Key takeaways — $20,000 sole trader turnover
- $20,000 turnover, NZ$0 expenses → about $17,242 take-home (KiwiSaver opted out, no student loan).
- Income tax ≈ $2,408; ACC earner levy ≈ $350; ACC work levy not modelled.
- Student loan does not change this vignette — profit stays at or below the $24,128 repayment threshold.
- With $10,000 expenses, taxable profit is $10,000 and total tax about $1,225.
- At $20,000 turnover (expenses = 0), GST registration is not flagged — IRD registration generally applies from $60,000 GST turnover.
Sole trader tax on $20,000 turnover (2026/27)
This page models New Zealand sole-trader tax on $20,000 annual turnover with NZ$0 expenses (2026/27). With KiwiSaver opted out and no student loan: taxable profit $20,000, income tax about $2,408, ACC earner levy about $350, take-home about $17,242. That turnover is about $1,667/month before tax. Use the calculator below to add expenses, KiwiSaver, or student loan.
Breakdown at $20,000 (expenses = NZ$0)
Baseline solves from the same engine as the live calculator (KiwiSaver opted out, no student loan).
| Line | Amount |
|---|---|
| Taxable profit | $20,000 |
| Income tax | $2,408 |
| ACC earner levy | $350 |
| Total tax | $2,758 |
| Take-home | $17,242 |
| Effective rate | 13.8% |
At $20,000 turnover (expenses = 0), GST registration is not flagged — IRD registration generally applies from $60,000 GST turnover.
Provisional tax is not flagged as likely on this $20,000 expenses=0 vignette under the residual income tax gate of more than $5,000.
Same $20,000 turnover — other scenarios
+ Student loan
$17,242
SL ≈ $0
+$10,000 expenses
$8,775
Profit $10,000
How to read this $20,000 page
What $20,000 turnover means
$20,000 a year is about $1,667 per month of business income before expenses and tax.
On the expenses=0 baseline (KiwiSaver opted out), income tax is about $2,408 and ACC earner levy about $350, leaving roughly $17,242 take-home.
ACC work levy by industry remains outside this model — confirm classification rates separately if they apply to your trade.
GST and provisional tax at this turnover
At $20,000 turnover (expenses = 0), GST registration is not flagged — IRD registration generally applies from $60,000 GST turnover.
Provisional tax is not flagged as likely on this $20,000 expenses=0 vignette under the residual income tax gate of more than $5,000.
Confirm registration and provisional options on ird.govt.nz — this tool does not replace IRD systems.
Expenses, KiwiSaver, and student loan at this turnover
Claiming $10,000 deductible expenses reduces taxable profit to $10,000 and total tax to about $1,225 (take-home from that profit ≈ $8,775).
Student loan repayments start above $24,128. At $20,000 profit with NZ$0 expenses, enabling student loan leaves take-home unchanged in this model.
Selecting 3% KiwiSaver on this expenses=0 vignette lowers take-home to about $16,642 (KiwiSaver ≈ $600).
Compare with employment and GST maths
For employment PAYE from a known salary, use the New Zealand paycheck calculator. For salary needed to hit a take-home target, use Net to Gross New Zealand.
For add/remove GST on invoice amounts at the IRD standard rate, open the New Zealand GST calculator.
Checklist for $20,000 turnover
- 1Confirm $20,000 annual ($1,667/month) matches your expected turnover.
- 2Enter real allowable expenses — do not leave NZ$0 if you have deductible costs.
- 3Leave KiwiSaver at 0% unless you contribute at an employee rate.
- 4Toggle student loan if compulsory repayments apply.
- 5At $20,000 turnover (expenses = 0), GST registration is not flagged — IRD registration generally applies from $60,000 GST turnover.
- 6Provisional tax is not flagged as likely on this $20,000 expenses=0 vignette under the residual income tax gate of more than $5,000.
- 7Compare with the New Zealand paycheck calculator if weighing a job offer.
- 8Confirm rates on ird.govt.nz before relying on a figure.
Related turnovers & tools
FAQ — $20,000 sole trader turnover
With NZ$0 expenses, KiwiSaver opted out, and no student loan: income tax about $2,408 plus ACC earner levy about $350 (total ≈ $2,758), leaving about $17,242 take-home (2026/27 educational model).
About $17,242 with no expenses, KiwiSaver opted out, and no student loan. Add expenses or options in the calculator for a closer figure.
Not flagged at $20,000 expenses=0. IRD registration generally applies from $60,000 GST turnover.
Not flagged as likely on this expenses=0 vignette under the residual income tax gate of more than $5,000.
At $20,000 profit, enabling student loan does not change take-home in this model while income stays at or below the repayment threshold.
Taxable profit becomes $10,000; total tax about $1,225; take-home from that profit about $8,775 (KiwiSaver opted out, no student loan).
No. ACC earner levy is included; ACC work levy by industry classification is not modelled.
Use the sole trader New Zealand hub for any amount, open another turnover page (NZ$20k–NZ$100k), or compare employment on the New Zealand paycheck calculator.
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