GST basics for New Zealand small businesses

Goods and Services Tax (GST) is part of running almost every business in New Zealand. The rules are simpler than many people expect, but small mistakes around registration and filing add up quickly. Here is what matters.

When you have to register

You must register for GST with Inland Revenue (IRD) once your turnover passes $60,000 in any 12-month period, or when you expect it to pass that figure in the next 12 months. Turnover means your total sales, not your profit.

If you are below the threshold you can still register voluntarily. That can be worth it if you buy a lot of GST-charged supplies and want to claim the GST back, but it also means you take on the filing obligations. It is a choice, not an automatic win, so weigh it against the extra admin.

The standard rate

GST is charged at 15% on most goods and services. Some supplies are zero-rated, such as exports and the sale of a going-concern business, and a few are exempt, such as residential rent and most financial services. Zero-rated and exempt are not the same thing, and treating one as the other is a common source of errors.

Filing your returns

Once registered, you file GST returns and pay or claim the difference between the GST you charged on sales (output tax) and the GST you paid on purchases (input tax). You choose a filing frequency:

• Monthly, usually for larger or fast-growing businesses
• Two-monthly, the most common choice for small businesses
• Six-monthly, available if your turnover is under $500,000

You also pick an accounting basis. The payments basis records GST when money actually moves, which helps cash flow for small businesses. The invoice basis records it when you issue or receive an invoice. Most small operators start on the payments basis.

Keep the records IRD expects

You need to hold valid taxable supply information for your purchases. For anything over $1,000 that means the supplier’s name and GST number, the date, a description, and the amount. Keep records for seven years. Good record-keeping is what makes a return quick instead of painful, and it is the difference between claiming everything you are entitled to and leaving money behind.

Common mistakes to avoid

• Claiming GST on things that do not qualify, such as private spending or exempt supplies
• Forgetting that some imports and certain digital services have their own GST treatment
• Missing the filing deadline, which triggers late penalties and interest
• Mixing personal and business accounts so the numbers are hard to separate at filing time

Plan for the GST you collect

The GST you charge is not your money. Set it aside as it comes in, ideally in a separate account, so you are never caught short when the return is due. Businesses that treat GST as part of their cash flow are the ones that get surprised.

How we help

We register your business for GST, set the right filing frequency and accounting basis for how you actually trade, and prepare and file your returns with IRD so they are correct and on time. We work with small businesses across New Zealand and Australia, and our team are hands-on experts in Xero and MYOB, so your GST flows straight out of clean, reconciled books.

This article is general information, not tax advice. Talk to us about your specific situation.