New Zealand businesses engage overseas contractors constantly — developers, designers, specialist consultants. The tax treatment is more involved than most people expect, and it is being simplified.
The change signalled
A proposed single-payer approach to non-resident contractor tax would mean a New Zealand business only needs to consider its own contract with the non-resident contractor, rather than assessing the contractor’s wider activity in New Zealand.
That is a substantive improvement. Under the existing approach, working out your withholding obligation can depend on what the contractor is doing for other New Zealand payers — information you have no reliable way of obtaining and no right to demand.
What non-resident contractor tax is
Where a non-resident performs services in New Zealand under a contract, payments can be subject to withholding at source. The payer deducts and pays it to Inland Revenue.
Key points as things stand:
- It applies to services performed in New Zealand, which is the distinction that resolves most cases. A developer working from overseas is in a different position from one who flies in to work on site.
- Exemption certificates can reduce or remove the obligation where a contractor’s circumstances warrant it, and contractors who work here regularly often hold one.
- Double tax agreements can affect the position, and New Zealand has agreements with a substantial number of trading partners.
- Thresholds apply, below which withholding is not required.
Getting it wrong creates an arrears position for the payer, not the contractor, which is why it is worth confirming rather than assuming.
The other consequences of engaging offshore
Employment status. The test is the real nature of the relationship, not the label or the location. A person working exclusively for you, under your direction, on your systems, for an extended period may be an employee regardless of being overseas — which raises questions about which country’s employment law applies.
Intellectual property. This is the one that causes the most damage and gets the least attention. Work created by a contractor frequently belongs to the contractor unless the agreement says otherwise. That default surprises businesses that paid for software, designs or content and assumed they owned it.
Assignment of copyright must be in writing to be effective. Get it in the contract, before the work starts.
Privacy. Where a contractor handles personal information, that is a disclosure and you remain accountable. Where information goes offshore, obligations apply around ensuring comparable protections. The new IPP 3A obligation, in force since 1 May 2026, also covers information collected indirectly.
Confidentiality and security. A contractor with access to your systems is a supply chain risk. The NCSC’s August 2026 supplier guidance frames supplier management as an ongoing process rather than a procurement event, and contractors with system access belong in that assessment.
Paying overseas
Two practical risks:
Currency. Exposure starts when you agree a price, not when you pay. For recurring arrangements, either contract in New Zealand dollars or accept and manage the exposure.
Payment fraud. Altered bank details on an invoice is the most common and most damaging pattern in international payments. Verify any change of account details by phone using a number you already hold — never by replying to the email.
Contract terms worth having
- Assignment of intellectual property, in writing.
- Confidentiality, with defined obligations on data handling.
- Governing law and dispute resolution — a dispute in a distant court is effectively unenforceable for a small business, and arbitration is generally more enforceable across borders.
- Payment terms and currency.
- Warranties about the contractor’s right to do the work and that it does not infringe third-party rights.
- Termination, and what happens to work in progress.
Where to check
Inland Revenue publishes guidance on non-resident contractors, schedular payments and double tax agreements free at ird.govt.nz, and its tax policy site publishes material on proposed changes.
The single-payer approach described was announced in Budget 2026 and remains subject to legislation. Confirm current withholding obligations with Inland Revenue. General information only, not tax advice.
