How do you engage contractors in New Zealand compliantly in 2026?

The five Gateway Test criteria under Employment Relations Amendment Act 2026, s 6AA:

1. Written agreement stating the person is an independent contractor or not an employee.
2. Right to work for others: the worker may work for another person, but not at the same time as working for the engaging party.
3. Scheduling autonomy or right to subcontract: the worker can choose when to work, or can subcontract the work to a third party.
4. Right to decline work: the worker can decline an additional offer of work without the arrangement ending.
5. Access to independent advice: the worker had a reasonable opportunity to obtain independent advice before signing.

All five must be satisfied. One unmet criterion means the worker falls back to the common law test for the full period.

The common law test: four frameworks, no single answer

Under ERA 2000, s 6, the Employment Relations Authority must determine the real nature of the relationship. The statute expressly states that a label describing the relationship is not to be treated as determinative. Courts apply four overlapping frameworks:

• Control: how much direction does the engaging party have over what, where, when, and how the work is done? Greater control points to employment.
• Integration: is the work fundamental to the engaging business, or supplementary and project-specific? Integrated, continuous work points to employment.
• Economic reality (own business): does the worker operate as a business on their own account, with multiple clients, financial risk, and the possibility of profit or loss from the venture?
• Tools, equipment, and substitution: a worker who provides their own equipment, invests their own money, bears losses, and can get others to work for them without needing permission points toward contractor status.

IRD applies the same common law analysis for tax purposes under Interpretation Guideline IG 16/01. An ERA reclassification and an IRD PAYE audit can happen independently and reach the same conclusion by different routes.

IRD private ruling: Apply under the Tax Administration Act 1994. The application fee is NZ$ 322, which covers the review and the first two hours of IRD's time. IRD states that total costs range from NZD 5,000 to NZD 45,000, with an average of around NZD 15,000. Rulings are ordinarily issued for a period of 36 months. A binding ruling gives certainty for the period and the arrangement it covers; it does not apply retrospectively to earlier arrangements.

ERA determination: Either party can apply to the Employment Relations Authority for a formal determination of employment status. The lodgement fee is NZ$ 71.55, payable before the application is accepted and non-refundable if you withdraw. An ERA determination covers employment status only, not the tax consequences of that status.

If the anticipated engagement is high-value or long-running, a private ruling or ERA determination before engagement is significantly cheaper than a reclassification audit after the fact.

The penalty stack (confirmed by IRD):

• Initial late-payment penalty: 10% of the outstanding amount, reducing to 5% if paid within one month of the penalty being imposed.
• Escalating penalty: a further 10% per month until the debt is cleared or an instalment arrangement is in place.
• Shortfall penalties on the tax not taken: 20% for lack of reasonable care, 40% for gross carelessness, 150% for evasion. The cumulative late-payment penalty is capped at 150%.
• Use-of-money interest at 8.97% per annum on the outstanding tax (rate effective January 2026).

Employment entitlements: a reclassified worker can claim annual holidays, sick leave, and the KiwiSaver employer subsidy for the period they were misclassified. KiwiSaver non-compliance carries its own monthly penalties: NZ$ 50 per month for a small employer, NZ$ 250 per month for a large employer.

Criminal exposure: IRD states that deliberately failing to make PAYE deductions can result in a fine of up to NZ$ 50,000, imprisonment for up to 5 years, or both. A 2026 IRD media release confirms that a company director who decides the company will not pay PAYE deductions to IRD may personally be prosecuted for the company's failure. IRD treats withheld amounts as funds held for the Crown; not remitting them is treated more seriously than other tax debts.

Wage record obligations: employers are required to keep full and accurate wage records for 7 years. A misclassification audit that spans that full window can cover every payment made to the worker throughout the engagement.

Step 1: Assess the Gateway Test criteria. Before any engagement, check all five criteria against the actual intended working arrangement. If any cannot be genuinely met, do not attempt to paper over it with a contract clause.

Step 2: If gateway-compliant, draft the written agreement. The contract must state that the person is an independent contractor or not an employee. Document the right to work for others, the right to decline work without the arrangement ending, and the worker's opportunity to obtain independent advice before signing. Keep the signed agreement and evidence of the advice opportunity.

Step 3: Handle schedular payments correctly. If the engagement is for labour-dominant work in a specified category, obtain a completed IR330C form from the contractor stating their chosen withholding rate. The minimum self-declared rate is 10%. If no IR330C is provided, you must withhold at the 45% non-notified rate. Failure to withhold can make you personally responsible for the resulting tax debt.

Step 4: Confirm GST position. A contractor with annual turnover at or above NZ$ 60,000 must register for GST and add 15% to their invoices. Verify the contractor's GST registration number before first payment.

Step 5: Keep records. Retain all contracts, IR330C forms, payment records, and correspondence for at least 7 years. IRD's standard lookback is 4 years; the full retention period protects against a late-starting audit.

Step 6: Review the arrangement periodically. A relationship that starts as contractor-compliant can drift into employment territory as control, integration, and exclusivity increase. Schedule a classification review at least annually and whenever the scope of work changes significantly.

When to use EOR instead: if the actual working arrangement cannot satisfy all five Gateway Test criteria, or if the common law factors point clearly toward employment, Teamed's EOR path is the lower-exposure route. The EOR fee starts from $599 per month, with zero FX mark-up, no setup fee, and no exit fee.

1. Assess the Gateway Test

   Before any contract is signed, check all five Gateway Test criteria against the actual intended arrangement. All five must be genuinely met for the test to apply.

2. Draft the written agreement

   The contract must name the worker as an independent contractor and document the right to work for others, decline work, and access independent advice before signing.

3. Handle schedular withholding

   Obtain a completed IR330C form. If none is provided, withhold at 45%. Failure to withhold can make you responsible for the contractor's resulting tax debt.

4. Confirm GST status

   Verify the contractor's GST registration number. Contractors above the NZ$ 60,000 turnover threshold must charge 15% GST on invoices.

5. Keep records for 7 years

   Retain contracts, IR330C forms, payment records, and correspondence. IRD's standard lookback is 4 years; the fraud exception removes the time limit.

6. Review classification annually

   A compliant arrangement can drift into employment territory. Review against the Gateway Test criteria and the common law factors at least once a year and whenever the scope changes.

The Employment Relations Amendment Act 2026 made this explicit. The Government's stated purpose was to prevent retrospective challenges for qualifying arrangements, but only from 21 February 2026 onwards. Pre-commencement periods are judged entirely on the common law Real Nature of the Relationship Test.

In practice, this means a split outcome is possible: the same worker could be correctly classified as a contractor from February 2026 (because the new arrangement satisfies all five gateway criteria) while still being reclassifiable as an employee for the period before that date (because the older arrangement did not meet those criteria). Both outcomes can exist in parallel, covering different periods.

IRD's 4-year standard assessment window under s 108(1) of the Tax Administration Act 1994 means IRD can assess PAYE back 4 years from the date a return is filed. Where a return was fraudulent or wilfully misleading, s 108(2) removes any time limit entirely.

If you have engaged the same person as a contractor for several years and are now restructuring the arrangement, take legal advice on the prior period before moving. Teamed can set up the forward-looking employment structure; the prior period is a separate question that needs qualified New Zealand counsel.

GST registration in New Zealand is mandatory once a contractor's taxable supplies in any 12-month period equal or exceed NZ$ 60,000, or are expected to do so in the next 12 months (confirmed by IRD). The standard GST rate is 15%. A GST-registered contractor adds 15% to their invoice, collects it from you as the paying party, and remits it to IRD on a one-monthly, two-monthly, or six-monthly basis depending on their registration type.

As the payer, you should confirm the contractor's GST number before first payment. A contractor who charges GST without being registered is personally liable to IRD for that amount. A contractor who is registered but does not charge GST is also exposed.

GST registration is separate from the schedular payment withholding obligation. A contractor can be both GST-registered and subject to schedular withholding. The two regimes run independently: you withhold the schedular rate from the pre-GST amount and pay GST on top.

Below the NZ$ 60,000 threshold, the contractor is responsible for their own income tax returns and ACC levies. They do not charge GST and you have no GST recovery. Schedular withholding may still apply depending on the nature of the work.