Our IR335 Employer's guide explains your obligations if you need to withhold tax from a payment made to a nonresident contractor. Read our stepbystep guide to learn how to comply with New Zealand's labor laws, including how to classify, manage, and pay your New Zealand contractors.Being a contractor or freelancer, withholding tax can get complicated because your earnings fluctuate. NRCT works like an interim withholding tax, which is collected from the non-resident contractor's payments and paid to Inland Revenue. Get a comprehensive understanding of the tax system for expats in New Zealand. Our guide covers everything from income tax rates to tax treaties and more. PAYE and NRCT simplification coming for crossborder workers. Inland Revenue proposes concessions to improve certainty, efficiency, and fairness for businesses. A common gripe for businesses bringing workers from offshore is that the New Zealand tax rules are difficult to comply with and expensive to get wrong. (b) the benefits conferred in a Contracting State under the Convention in accordance with Articles 19 (Government Service), 20 (Students), and 26 (Diplomatic.