Sole Trader vs Limited Company in NZ: When to Make the Switch

Many New Zealanders start their first business as a sole trader: no registration required, income reported on your personal tax return, simple to set up. But as the business grows, staying a sole trader can cost you more than you realise. Understanding when to form a limited liability company is one of the most important decisions a NZ business owner can make.

How Sole Trader vs Company Works in NZ

As a sole trader, you and your business are the same legal entity. You report business income on your individual IR3 tax return, pay income tax at your marginal rate (up to 39% on income above NZ$180,000), and are personally liable for all business debts. There is no separate business entity to protect your personal assets.

When you form a limited company, it becomes a separate legal person. The company pays the flat 28% corporate tax rate. Your personal liability is generally limited to the amount you paid for your shares (with some exceptions for director misconduct). You can also pay yourself a salary, draw dividends, and split income across shareholders in ways that a sole trader structure does not allow.

The Tax Tipping Point

The most common reason NZ business owners incorporate is tax. Once your business income is high enough that your marginal personal tax rate exceeds 28%, a company structure starts saving you money. The current NZ income tax rates are:

• Up to NZ$14,000: 10.5%
• NZ$14,001 to NZ$48,000: 17.5%
• NZ$48,001 to NZ$70,000: 30%
• NZ$70,001 to NZ$180,000: 33%
• Over NZ$180,000: 39%

If your business is generating more than around NZ$70,000 in profit, the 28% corporate rate starts to look attractive. An accountant can model the exact break-even point for your situation, taking into account how much you need to draw as salary to live on versus retain in the company.

Liability Protection

Tax is not the only reason to incorporate. If your business carries risk, a limited company protects your personal assets. A sole trader who is sued for professional negligence, a bad debt, or a contract dispute faces personal liability. A company director in the same situation generally has the company (not their personal assets) as the defendant, provided they have not traded recklessly or committed fraud.

Industries with higher liability risk include construction, professional services, healthcare, property development, and any business working on client premises. If you are in one of these areas, incorporating earlier rather than later is often worth the cost for the peace of mind alone.

When to Hold Off on Incorporating

If you are in the early testing phase of a business idea, a sole trader structure is fine. The compliance costs of a company, including annual returns, a separate bank account, and accounting fees, may not be worth it until you are confident the business has legs.

As a rule of thumb: incorporate when you are regularly invoicing clients, your profit is approaching NZ$60,000 to NZ$70,000, you want to protect personal assets, or you want to bring in investors or co-founders.

How to Incorporate a Company in NZ

Registering a NZ company takes less than an hour on the Companies Office website. You will need to choose a company name, appoint at least one director (who must be a NZ resident or have a NZ-resident co-director), and issue at least one share. The registration fee is NZ$112.36. You will also need to open a separate business bank account and register for GST if your turnover will exceed NZ$60,000 per year.

An accountant can help you structure the shareholding, set up the right bank accounts, and make sure you are making the most of the company structure from day one. Most NZ accountants who work with small businesses offer a fixed-fee incorporation package.

If you are looking for an accountant who works with new NZ companies, FreshFirms can connect you with professionals in your region.