Running a trade business comes with plenty of expenses. Fortunately, many of them are tax-deductible. Understanding what you can and can’t claim could mean the difference between overpaying on tax and keeping more of your hard-earned money. However, the process isn’t always straightforward – this guide breaks down the essential tax deductions for tradies in 2026, common tax mistakes to avoid, and how to make tax time stress-free.

Note: This guide is designed for self-employed tradies. If you operate through a company, your tax obligations may differ. This information is general in nature and does not constitute tax advice; please consult a qualified professional for advice specific to your circumstances.

How tax works for self-employed tradies

Unlike employees who have PAYE tax deducted automatically, self-employed tradies must calculate and pay their tax directly to Inland Revenue (IRD). If your residual income tax (tax owing after deductions) exceeds $5,000, you may be required to pay provisional tax in instalments throughout the year.

If your annual turnover exceeds $60,000, you must register for GST and charge your customers accordingly.

Tax rate changes for 2025/26

Income tax rates have been adjusted for the 2025/26 tax year, which could affect how much tax you pay. For example, income up to $15,600 is now taxed at 10.5%, while income between $53,501 and $78,100 is taxed at 30%. To check the latest tax brackets, visit the IRD website.

2025/2026 Tax Rates for NZ Tradies

Income Range Tax Rate
$0 – $15,600 10.5%
$15,601 – $53,500 17.5%
$53,501 – $78,100 30%
$78,101 – $180,000 33%
Over $180,000 39%

Use IRD’s tax rate calculator to find your exact tax obligations

It’s important to stay on top of tax return deadlines to avoid penalties. Many tradies get caught out because they don’t realise they need to set aside money throughout the year.

Key Rules for 2026:

  • ✔ Provisional Tax: Required if residual income tax exceeds $5,000 (paid in instalments).
  • ✔ GST Registration: Mandatory if annual turnover reaches or is expected to surpass $60,000.
  • ✘ Late Payment Penalties: An initial 1% penalty is applied the day after the due date, followed by a 4% penalty seven days later.
  • ✘ Interest: IRD also charges Use of Money Interest (UOMI) on overdue tax, currently set at 10.91% per annum.

Tax deductions for tradies in New Zealand (2026)

There are many expenses you can legally claim to lower your taxable income:

Tools and equipment. Most tradies can deduct the cost of tools and equipment used for work. For items costing $1,000 or less (excluding GST), you can claim the full amount immediately. For items costing $1,000 or less (excluding GST), you can claim the full amount immediately. For more expensive items, depreciation rules apply – however, with the 20% Investment Boost you could claim a bigger portion of the cost in your first year of ownership. Keep receipts to make sure your claims hold up in case of an audit.

Vehicle expenses. If you have a dedicated work vehicle, expenses like fuel, registration, insurance, repairs, and even loan interest may be deductible. If you use your personal car for work, you can claim mileage using IRD-approved kilometre rates, but you need to keep a logbook to track business-related trips.

Home office expenses. If you do paperwork, store tools, or manage bookings from home, you may be eligible to claim a portion of your household expenses. The simplest way to do this is often the IRD’s square metre rate, which covers electricity, gas, and water based on the area used exclusively for business.

Work clothing and protective gear. Branded uniforms, steel-capped boots, gloves, and high-vis jackets are deductible. However, everyday clothing, even if worn on-site, is not claimable. This is a common mistake, so ensuring your gear meets IRD’s criteria is essential.

Travel and accommodation. Costs directly related to work, such as attending a job in a different town, travelling for a trade conference, or taking part in specialised training, are deductible. However, daily commuting from home to your usual place of work is not claimable.

Phone and internet expenses. You can claim a portion of your phone and internet expenses if used for work purposes. If your mobile phone is used for both personal and business use, you can only claim the work-related portion. A reasonable estimate is required, or better yet, maintaining an itemised record.

Insurance and professional expenses. Public liability insurance, income protection, accounting fees, and costs associated with renewing trade licenses or certifications can also be claimed. These expenses are often overlooked but can add up to significant savings.

KiwiSaver contributions. Self-employed tradies can make voluntary contributions to KiwiSaver, and the government may top up your savings with a contribution of up to $521.43 annually. However, it’s important to note that these contributions are not tax-deductible for self-employed individuals.

Common tax mistakes tradies make (and how to avoid them)

One of the biggest tax mistakes tradies make is mixing personal and business expenses. When business and personal spending are combined in the same bank account, it makes figuring out deductible expenses nearly impossible. Setting up a separate business account and using a dedicated business card simplifies tax time significantly.

Poor record-keeping is another frequent issue. IRD requires proper documentation to back up all claims. Relying on bank statements alone isn’t enough; you should keep receipts and invoices for at least seven years. Using accounting software or a simple app to track income and expenses makes this much easier.

Some tradies miss out on savings by not claiming all eligible deductions. Small expenses, such as trade magazine subscriptions, work-related parking, and software costs for invoicing or quoting jobs, might seem minor but can add up over the year.

Failing to plan for tax payments is another common issue. Many sole traders wait until the end of the financial year to find out what they owe, leading to cash flow stress. A simple strategy is setting aside a portion of each payment received into a separate tax savings account.

How to make tax time easy

Staying organised throughout the year can make tax time far less stressful. Using a record-keeping app like Xero, MYOB, or even a simple spreadsheet can help you track expenses and invoices with ease. The more accurate your records, the simpler it is to claim deductions and avoid issues with IRD.

Hiring an accountant isn’t just for large businesses – many self-employed tradies find that professional tax advice saves them more than it costs. An accountant can ensure you claim everything you’re entitled to and help structure your finances to reduce your tax bill legally.

Don’t forget to check your eligibility for the Independent Earner Tax Credit (IETC). If your annual income is between $24,000 and $70,000, you could be eligible for a tax credit of up to $520 per year.

Even with the best planning, cash flow can be tight when tax payments are due. Some businesses use small business loans or a line of credit to cover tax obligations while keeping day-to-day operations running without a hitch.