NZ Tax Guide for Plumbers (2025-26)
Plumbers in New Zealand must be registered with the Plumbers, Gasfitters and Drainlayers Board (PGDB) to perform licensed work. Self-employed plumbers running their own business have access to significant tax deductions including vehicle and equipment costs.
Quick Tax Snapshot — Median Plumber Salary
Based on Stats NZ data. Apprentice plumbers earn approximately $40,000–$55,000. Registered plumbers and gasfitters earn $65,000–$85,000. Master plumbers running their own business may earn $90,000–$120,000+.
| Item | Annual | Monthly |
|---|---|---|
| Gross Salary | $70,000 | $5,833 |
| Income Tax (PAYE) | −$13,221 | −$1,102 |
| ACC Levy (1.6%) | −$1,169 | −$97 |
| KiwiSaver (3%) | −$2,100 | −$175 |
| Take-Home Pay | $53,511 | $4,459 |
Key Deductions for Plumbers in NZ
PGDB registration and licensing fees
Plumbers, Gasfitters and Drainlayers Board registration and annual practising certificate fees are deductible.
Tools and plumbing materials (business)
Tools, safety equipment, and materials consumed in performing plumbing work (where billed through the business) are deductible business expenses.
Vehicle expenses
Work vehicle running costs for transporting tools and visiting job sites are deductible for self-employed plumbers. A logbook is recommended for mixed-use vehicles.
Protective clothing and uniforms
Work uniforms, safety boots, and protective clothing purchased for work are deductible where not provided or reimbursed by an employer.
Deductibility depends on individual circumstances. Consult a registered tax agent or accountant for personalised advice. See IRD guidance on individual expenses.
Frequently Asked Questions
How much tax does a plumber pay in NZ?
On a $70,000 salary in 2025-26, a plumber pays approximately $13,220 in income tax. The effective rate is about 18.9% and the marginal rate is 30%. Including ACC levy and 3% KiwiSaver, take-home pay is approximately $53,500.
Do self-employed plumbers need to register for GST?
If a plumber's annual turnover exceeds $60,000, GST registration is mandatory. Most full-time self-employed plumbers will exceed this threshold and must charge 15% GST on their labour and materials.
Can plumbers claim apprenticeship training costs?
Yes. Employers can claim training costs for apprentices as a business expense. Apprentices may also be able to claim PGDB examination fees not covered by their employer.
What tax code does a plumber use?
Employed plumbers use the M tax code (or M SL with a student loan). Self-employed plumbers do not use tax codes but pay provisional tax based on their estimated annual income.
Calculate Your Actual Take-Home Pay
The figures above are based on a median salary estimate. Use our free calculator to see your exact take-home pay for your own salary — including student loan repayments if applicable.
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See NZ tax breakdowns for other common professions:
Calculations assume 2025-26 tax year, 3% KiwiSaver employee contribution, no student loan, and ACC earner's levy at 1.6% (capped at $152,790). Figures are estimates only. New Zealand has no personal allowance — income tax applies from the first dollar of income.
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