Verified for 2026 Tax Year

GST for Contractors

Your complete roadmap to navigating GST as an independent contractor or sole trader in New Zealand. From the mandatory threshold to maximizing your refunds.

In 2026, contracting is more dynamic than ever. Whether you're a freelance consultant, a tradie, or a tech professional, understanding GST is the difference between a healthy cashflow and a surprise IRD debt.

The Mandatory Registration Threshold

You must register for GST if your annual turnover (gross income before expenses) is over $60,000 in any rolling 12-month period, or if you expect it to be in the next 12 months.

Schedular Payments & GST Flow

Base Rate Invoice: $1,000

+ 15% GST

Adds $150 (Paid to IRD Later)

- 20% Withholding Tax

Deducts $200 from Base ($1,000)

Net Cash to You: $950

Voluntary Registration

Even if you earn under $60,000, you can choose to register voluntarily. Here are the pros and cons:

Pros of Registering

✓ Claim back GST on expensive gear/tools
✓ Look more professional to big B2B clients
✓ Offset setup costs for new businesses

Pros of Unregistered

✓ Lower compliance & less paperwork
✓ Price advantage for everyday consumers (B2C)
✓ No need to file regular GST returns

Common Contractor Deductions

One of the biggest perks of being GST-registered is claiming back the 15% GST on your business expenses. Common items include:

✓ Tools & Technology: Laptops, software (Xero, HNRY, Slack), and specialist tools.
✓ Vehicle Expenses: Claim GST on fuel, repairs, and insurance (apportioned via logbook).
✓ Home Office: A percentage of your power, internet, and rent/interest if you work from home.
✓ Professional Fees: GST on your accountant, legal advice, and professional memberships.

Choosing Your Accounting Basis

For most contractors, the Payments Basis (Cash Basis) is the safest choice. It ensures you only owe GST to the IRD once the cash is actually in your bank account, preventing cashflow gaps if clients are late paying your invoices.

Frequently Asked Questions

Must I register for GST if I earn under $60,000?

No. Registration is only mandatory if your turnover exceeds $60k in a rolling 12-month period. However, you can choose to register voluntarily if you have significant business expenses to claim back.

How does GST work with Schedular Payments?

If you receive schedular payments, your payer withholds income tax (WT). If you are GST-registered, you still charge 15% GST on the base amount of your invoice. The WT is calculated on the pre-GST fee.

Do I need a separate GST bank account?

While not legally required, it is highly recommended. Putting aside the 15% GST as soon as you are paid ensures you never accidentally spend the IRD's money.

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