Amazon Seller Business Structure: Sole Trader vs Company

Best Business Structure for Amazon Sellers: Sole Trader vs Company vs Trust

21/08/2026

Picking the right amazon seller business structure is one of the first decisions that shapes how much tax you pay, how protected your personal assets are, and how easily your store can scale. Most sellers start out without giving this much thought, choosing whatever feels quickest to set up. That decision often needs revisiting once revenue climbs and the risks of running an online store grow alongside it.

This guide walks through the three most common structures Australian Amazon sellers use — sole trader, company, and trust — and explains when each one actually makes sense.

Every year, thousands of Australians launch an Amazon store without ever discussing structure with an accountant. Some get lucky and never run into problems. Others discover, usually during a growth spurt or a stock dispute, that their setup wasn’t built to handle the risk they’re now carrying. A little planning upfront avoids that scramble later.

Why Structure Matters More Than Most Sellers Realise

When you’re focused on sourcing products, managing listings, and chasing sales, business structure can feel like paperwork that can wait. In reality, it affects almost every financial decision you make from that point forward. Getting your amazon seller business structure setup right from the start makes every decision after it — tax, GST, growth planning — noticeably simpler.

Your structure determines how profit is taxed, whether your personal assets are protected if something goes wrong, and how easily you can bring in a business partner or investor later. It also affects how much admin work your accountant needs to do each year, which has a direct impact on your compliance costs.

Getting your amazon seller business structure sorted early, rather than after a growth spurt, tends to save both money and stress down the track.

It’s also worth remembering that structure isn’t a one-time decision. What suits a store in its first year rarely suits the same store three years later, once revenue, stock value, and risk have all changed shape. Reviewing this regularly, rather than setting it once and forgetting it, keeps your tax position and asset protection aligned with how the business actually runs today.

Sole Trader: The Simplest Starting Point

A sole trader structure is the fastest and cheapest way to start selling on Amazon. There’s no separate legal entity, which means less paperwork and lower setup costs. Profit is simply taxed at your personal marginal rate.

This simplicity comes with real trade-offs. As a sole trader, there’s no legal separation between you and your business. If your store faces a supplier dispute, a large refund liability, or any other financial risk, your personal assets are exposed.

Sole trader structures work well for sellers testing a product idea or running a small side business alongside other income. They tend to become less suitable once turnover grows past the point where personal liability becomes a genuine concern.

Company Structure: Built for Growth and Protection

A company structure creates a separate legal entity, which means the business itself — not you personally — is liable for its debts and obligations. Profit is taxed at the flat corporate rate, which for many growing e-commerce sellers works out lower than the top personal marginal rate.

Companies also make it easier to bring on business partners, reinvest profit back into stock and advertising at a lower tax rate, and present a more established structure if you ever look to sell the business.

The trade-off is more ongoing compliance. Companies must lodge separate tax returns, maintain proper company records, and meet ASIC obligations each year. For sellers who’ve moved past six figures in revenue, this extra admin is usually worth the protection and tax planning flexibility it provides — a common turning point in the amazon seller business structure decision.

If you’re weighing up whether it’s time to move from sole trader to company, reviewing your current business structure against your actual turnover and risk exposure is the best place to start.

Trust Structure: Flexibility for Family-Run Stores

A trust structure is less common for solo sellers but can make sense for family-run Amazon businesses or sellers planning to distribute profit across multiple people. A discretionary trust lets you allocate income to different beneficiaries each year, which can reduce overall tax when income is spread across family members on lower marginal rates.

Trusts come with their own compliance requirements, including annual trust resolutions and specific tax reporting obligations. They also don’t offer the same liability protection as a company unless paired with a corporate trustee.

This structure tends to suit sellers with a family business dynamic, rather than someone running the store solo, and it’s worth getting tailored advice before setting one up.

Comparing the Three Structures Side by Side

Laying the three options next to each other makes the trade-offs easier to see:

Sole trader — lowest cost and admin, but no asset protection and profit taxed at personal rates
Company — flat corporate tax rate, strong asset protection, but higher ongoing compliance
Trust — flexible income distribution across family members, but added reporting complexity and limited liability protection on its own

Most Amazon sellers in Australia move through these structures in roughly that order as their business grows, starting simple and adding complexity only once the benefits clearly outweigh the extra admin. This progression is exactly why reviewing your structure choice periodically matters more than getting it perfect on day one.

GST Registration Applies Regardless of Structure

No matter which structure you choose, GST registration amazon sellers need to consider kicks in once annual turnover passes $75,000 AUD. This obligation sits separately from your business structure decision, but the two are closely linked in practice.

A company structure, for example, often makes GST reporting more straightforward because business and personal transactions are already separated by design. Sole traders need to be more disciplined about keeping business banking and GST-relevant transactions apart from personal spending. This is another reason GST registration amazon sellers need to plan for is worth reviewing alongside your structure decision, not after it.

Whichever structure you land on, getting your GST registration and reporting set up correctly from day one avoids messy backdated corrections later.

This is one of the most common gaps we see when reviewing a new client’s Amazon business structure — GST registration that was set up correctly at first, but never updated after the business changed entity type. Keeping these two decisions aligned as your store grows saves a lot of cleanup work later.

Signs It’s Time to Change Your Structure

There’s no fixed revenue number that triggers a structure change, but a few signs are worth watching for:

Your turnover has moved well past six figures and personal liability feels riskier
You’re reinvesting most profit back into the business rather than drawing it out
You’re considering bringing on a business partner or investor
You want to plan for eventually selling the business
Your current structure is creating more compliance headaches than it’s worth

If two or more of these sound familiar, it’s a reasonable time to sit down and review whether your structure still fits how the business actually operates. This kind of periodic check is central to getting your amazon seller business structure right at every stage, not just at the start.

Making the Switch Without Disrupting Your Store

Changing structure doesn’t mean shutting down and starting over. It typically involves setting up the new entity, transferring existing contracts and accounts across, and updating your Amazon seller registration details. Done properly, this transition can happen without any interruption to your listings or sales.

The bigger risk is doing it without proper planning — missing a step in the transfer, misreporting the changeover for tax purposes, or leaving GST registration details out of sync with your new entity. Getting business advisory support through the transition helps make sure nothing falls through the cracks, and reviewing your cloud accounting setup at the same time keeps your records clean under the new structure from day one.

Choosing What’s Right for Your Store

There’s no single best structure for every Amazon seller. A store doing $40,000 a year with no employees has very different needs to one turning over half a million dollars with a small team behind it.

The right approach is to look at your current turnover, growth plans, risk exposure, and whether you’re running the store solo or with family involved. From there, a structure decision becomes much clearer, and it’s one worth revisiting every year or two as the business evolves.

Ultimately, choosing the right amazon seller business structure isn’t just about saving tax this year. It’s about building a foundation that can support the store you’re aiming to have in three or five years, without needing a stressful, last-minute restructure along the way.

Frequently Asked Questions

What’s the best business structure for a new Amazon seller in Australia?

Most new sellers start as sole traders because it’s simple and low-cost. It’s worth reviewing this decision once turnover grows or liability risk increases.

Do I need to register for GST if I run my Amazon store through a company?

Yes. GST registration is based on turnover, not business structure. Once you pass $75,000 AUD in annual turnover, registration is required regardless of how your business is set up.

Can I change my business structure after I’ve already started selling?

Yes, sellers switch structures regularly as their business grows. It requires careful planning to transfer contracts, accounts, and registrations correctly, but it doesn’t require stopping sales.