Sole Trader, Partnership, or Company? Choosing the right business structure

One of the most consequential decisions you'll make as a business owner isn't about your product, your marketing, or your pricing. It's about your structure - the legal and financial framework that underpins everything else.

Get it right, and your structure supports your growth, protects your assets, and keeps your tax position efficient. Get it wrong, and you can find yourself personally exposed, overpaying tax, or facing complications when you want to sell, bring in a partner, or pass the business on.

The good news: this is entirely solvable. But it helps to understand the options clearly before making a call.

New Zealand businesses typically operate through one of four main structures: sole trader, partnership, look-through company (LTC), or a standard limited liability company. Each has distinct implications for liability, taxation, administration, and flexibility.

Sole Trader

This is the simplest structure - you're the business. There's no separate legal entity, minimal setup requirements, and low compliance cost. Income is reported on your personal tax return.

The appeal is obvious: simplicity. But the risk is real. As a sole trader, you are personally liable for all business debts. If the business gets sued, or if a creditor comes knocking, your personal assets - house, savings, vehicle - are on the line.

Sole trader works well for individuals in the early stages of business, service providers with low liability exposure, and those with minimal complexity in their income or team structure. As the business grows - in revenue, in team size, or in risk - it's usually worth reviewing whether this structure is still appropriate.

Partnership

A partnership is formed when two or more people go into business together without incorporating. Like a sole trader, there's no separation between the partners and the business - each partner is personally liable for business debts, including debts incurred by their partners on behalf of the business.

Partnerships can work well for professionals in trusted long-term relationships - but the liability exposure is significant, and disputes between partners can be complex to resolve. If you're going into business with others, it's almost always worth considering a company structure instead.

Look-Through Company (LTC)

An LTC is a company in most respects, but it's taxed differently - profits and losses 'look through' to the shareholders' personal tax returns, much like a partnership. This can be advantageous when the business has losses to offset against other income, or where the income splitting between shareholders is beneficial.

LTCs come with added compliance requirements and are most effective in specific situations - typically in property investment or businesses with particular income-splitting strategies. They're worth understanding but aren't the right fit for every business.

Limited Liability Company

For most growing businesses in New Zealand, a limited liability company is the structure of choice - and for good reason.

The most significant benefit is in the name: limited liability. The company is a separate legal entity. Unless you've personally guaranteed debts or acted fraudulently, your personal assets are generally protected from business creditors.

Beyond protection, a company structure offers:

•       More flexibility in how profits are distributed and taxed

•       Easier ability to bring in shareholders or investors

•       Greater credibility with certain clients, particularly larger organisations

•       A more transferable structure if you want to sell or pass the business on

•       Potential access to the flat corporate tax rate (currently 28% in New Zealand)

The trade-off is complexity: companies require an annual return, more rigorous record-keeping, and ongoing compliance - all of which have an associated cost. But for most businesses above a certain scale, the benefits substantially outweigh this.

When should you review your structure?

Your business structure shouldn't be set-and-forget. Key moments to review it include:

•       When turnover starts growing significantly beyond sole trader thresholds

•       When you take on staff and your liability exposure increases

•       When you're bringing in a business partner

•       When you're acquiring assets - plant, property, vehicles - that you'd want protected

•       When you're planning to seek external investment or financing

•       When you're starting to think about exit - succession, sale, or transition

Structure isn't just about tax. It's about protection, flexibility, and making sure your business is built on foundations that support where you want to go.

One of the most common mistakes business owners make is treating structure as an administrative afterthought - something to be sorted once and never revisited. In reality, the right structure is a strategic asset. It shapes your tax position, your financing options, your ability to grow your team, and ultimately your ability to exit on your own terms.

The best time to get your structure right is before you need to change it.

The second best time is now.

If you're unsure whether your current structure is still serving you well - or if you're about to make a significant business decision - it's worth taking the time to get proper advice. The cost of getting it wrong is nearly always higher than the cost of getting it right.