You can download an IRD number application (external link) form from the What’s Tax website.
You may need a tax code. Your tax rate and the amount of PAYE (pay as you earn) tax that your employer deducts is based on your tax code.
You may also be eligible for a tax credit (also known as rebates). A tax credit is usually calculated at the end of the income year and reduces the total tax you need to pay. This may lead to a refund at the end of the year.
Under some circumstances you may be engaged as an independent contractor and be required to pay your own tax.
The What's Tax website (external link) has been designed to provide introductory tax information.