NZ Company IRD Registration Guide 2026: PAYE, GST, and Tax Obligations for New Businesses

What New NZ Companies Must Register With Inland Revenue

When a company incorporates in New Zealand, registration with the Companies Office is just the first step. Within days or weeks of incorporation, every new company must engage with Inland Revenue (IRD) to register for the right tax obligations. Getting this wrong -- or leaving it too late -- leads to penalties, back-dated obligations, and unnecessary compliance cost.

In 2026, approximately 250 new companies incorporate in New Zealand every weekday. Most directors are first-time business owners who do not know what they need to register for, or when. Accountants and bookkeepers who reach new companies in the first 30 days consistently win long-term clients because they solve this immediate problem.

Step 1: IRD Number for the Company

Every NZ company needs its own IRD number -- separate from the directors' personal IRD numbers. This is required before the company can file any tax return, open a business bank account for the entity, or register for GST or PAYE.

How to apply: Online through MyIR, or by completing an IR596 form. Companies registered through the Companies Office are automatically notified to IRD, and IRD will typically contact the company within a few weeks -- but many accountants proactively register the IRD number for their clients immediately after incorporation to avoid delays.

Timeline: IRD numbers are usually issued within 8 to 10 business days online. Apply immediately after incorporation.

Step 2: PAYE Registration (If Hiring Staff)

Any company that pays employees, directors' salaries, or shareholder-employees must register as an employer and deduct PAYE (Pay As You Earn). Registration is through MyIR and takes effect from the first payday.

Key obligation: PAYE must be deducted before the first payroll is run. Paying wages without deducting PAYE creates a personal liability for directors and triggers an IRD investigation.

Employer monthly schedule: Most new employers file PAYE monthly. The employer monthly schedule (IR348) is due by the 20th of the following month.

KiwiSaver obligations: Employers must auto-enrol eligible employees and make a minimum 3% employer contribution. New companies frequently miss this because they focus on PAYE setup and overlook KiwiSaver deductions. See our KiwiSaver employer obligations guide for the full detail.

Step 3: GST Registration (Threshold and Timing)

GST registration is compulsory when a company's turnover exceeds NZ$60,000 in any 12-month period. Registration must happen within 21 days of hitting the threshold.

Voluntary early registration: Most new businesses register for GST immediately, even if they expect to earn below the threshold. This allows them to claim GST back on setup costs (equipment, fit-out, professional fees) from day one -- often recovering thousands of dollars in the first year.

GST basis: New companies can register on an invoice basis (GST payable when invoiced) or a payments basis (GST payable when received). The payments basis is generally better for cash flow in the first year.

Filing frequency: Companies with annual turnover below NZ$500,000 may file GST 6-monthly. Most new businesses file 2-monthly. See our GST filing frequency guide for the detail.

Step 4: Provisional Tax (Year 2 Onwards)

New companies do not pay provisional tax in their first year of trading. However, from year two, if the company's residual income tax (RIT) in year one exceeds NZ$5,000, they become a provisional taxpayer and must make payments during the year rather than a single end-of-year bill.

Many first-year directors are caught off-guard by provisional tax -- they have a profitable first year, receive a large end-of-year tax bill, and then face provisional tax payments starting in year two. An accountant who explains this in the first 30 days of incorporation avoids this surprise and builds enormous trust with the client.

Common Mistakes New Directors Make

• Paying director salaries without PAYE registration (personal liability)
• Exceeding the GST threshold before registering (back-dated obligations)
• Forgetting KiwiSaver employer contributions from the first hire
• Using a personal bank account for business transactions (complicates GST and income tax)
• Not keeping separate records for the company from day one (IRD can disallow deductions without proper records)

How Accountants Win New Company Clients on IRD Registration

The IRD registration process is exactly the kind of task new directors outsource immediately. A short, helpful email within 30 days of incorporation that outlines what they need to register for with the IRD positions an accounting firm as the expert and gets a phone call or reply.

FreshFirms sends this email automatically on your behalf to newly incorporated companies in your region, personalised with the company name and director name. Accountants using FreshFirms reach new companies in the first week of incorporation -- well before other accounting firms do. Start a free 7-day trial.