In most cases, your employer will provide a tax form and deduct tax from your wages. But there are some special cases where this may not be the case, particularly if you've been employed to do work in a household environment.
Private domestic workers – such as home-helpers, caregivers, nannies, gardeners and domestic odd-jobbers – may classify as an IR56 taxpayer. This means that the employee is responsible for their own tax.
Self-employed contractors – this includes roles where you need to provide the employer with invoices for your services or work completed. Or where you're working solely on a commission basis and earning a percentage of a sale. In these cases, you're responsible for paying your own tax, ACC levies, and any other associated costs.
You can pay tax yourself using the IRD website or for a small fee, use a third party to do it for you such as Hnry.