Sole trader vs limited company: which structure is actually right for you?
It’s the question we get more than almost any other — and the honest answer isn’t the same for everyone. Here’s how we think about it, and the profit level where the maths really starts to shift.
If you’ve been asking yourself whether to stay a sole trader or incorporate as a limited company, you’re in good company. It’s one of the most common conversations we have with clients — and one of the most misunderstood decisions in UK business.
The internet is full of takes that essentially say “it depends” and then leave you none the wiser. So here’s our actual view: for most self-employed people earning under roughly £30,000 in profit, staying a sole trader is simpler, cheaper, and perfectly sensible. Once you’re pushing past that — particularly above £50,000 — the case for a limited company becomes genuinely compelling, and at that point the tax saving is real enough to matter.
The nuance is in the middle. And the admin, credibility, and liability angles matter just as much as the tax numbers. Let’s work through all of it.
The tax picture at different profit levels
This is where most people start, and rightly so — but it’s important to look at the full picture, not just the headline rate.
As a sole trader, your business profits are taxed as personal income. In 2026 that means Income Tax at 20% on profits between £12,571 and £50,270, rising to 40% between £50,271 and £125,140, and 45% above that. On top of Income Tax, you’re paying Class 4 National Insurance Contributions at 9% on profits between £12,570 and £50,270, and 2% on anything above — plus a small Class 2 NIC of £3.45 per week.
A limited company pays Corporation Tax instead: 19% on profits up to £50,000, and 25% on profits over £250,000, with marginal relief applying in between. That’s a significantly lower rate on the first £50,000 of profit.
The standard approach for a limited company director is to pay yourself a modest salary (typically around the National Insurance secondary threshold) and take the rest as dividends, which are taxed at lower rates than employment income. In the right circumstances this can produce a meaningful tax saving — but it requires you to actually leave money in the company, plan your extraction carefully, and factor in the costs of running the company. It isn’t free money; it’s a trade-off that needs to be modelled for your specific situation.
Our rough rule of thumb: the tax saving usually starts to outweigh the additional costs and admin burden once your consistent annual profits are above £30,000–£35,000.
Liability is more than a legal technicality
One of the most practically important differences between the two structures is how liability works — and it’s one that sole traders often underestimate until something goes wrong.
As a sole trader, you and your business are legally the same entity. Your personal assets — your savings, your car, your home in a worst-case scenario — are on the line if the business incurs a debt it can’t pay or faces a legal claim it can’t meet.
A limited company is a separate legal entity. As a director and shareholder, your personal liability is generally limited to the value of your shares. That distinction matters enormously if your work carries any meaningful risk: professional liability, contractual disputes, client claims, or even just the exposure that comes with holding stock or taking on staff.
This is one of the reasons we’d encourage any contractor or consultant doing significant B2B work to at least consider incorporation earlier than the tax numbers alone would suggest. The protection isn’t theoretical — it’s the entire point of the limited company structure.
That said, limited liability has limits of its own. If you’ve personally guaranteed a business loan or acted improperly as a director, the protection disappears. It’s not a blanket shield; it’s a sensible structural boundary.
The tax saving from incorporation is real — but it only pays off if you’re at the right profit level and prepared to run the company properly. Most people who incorporate too early end up paying more, not less.
The real admin cost of going limited
Here’s the part that often gets glossed over in articles that are bullish on incorporation: running a limited company is genuinely more work and more cost than being a sole trader.
A sole trader needs to file one Self Assessment tax return per year, keep basic records, and register for VAT if turnover exceeds £90,000 (the current threshold for 2026). That’s it. A decent accountant can handle all of this for a few hundred pounds a year — or even less if you’re organised.
A limited company needs year-end statutory accounts prepared to a specific format, a Corporation Tax return (CT600) filed with HMRC, a confirmation statement filed with Companies House each year, a director’s Self Assessment on top of that, and payroll running through PAYE if you’re paying yourself a salary. If you’re VAT-registered, that’s quarterly returns too.
The accountancy fees are higher, the filing obligations are more frequent, and Companies House filings are public — your accounts, your registered address, and your director details are visible to anyone who looks you up. That’s not a reason to avoid incorporation, but it’s a reason to go in with clear eyes.
Our honest take: if you’re not yet at a profit level where the tax saving is meaningful, the additional cost and admin of a limited company often cancels out the benefit. Starting simple and incorporating when the numbers justify it is usually the right call.
Credibility, contracts, and client perception
There’s a dimension to this decision that doesn’t appear in any tax calculation but is very real in practice: some clients and contracts simply prefer — or require — a limited company.
In the contractor market, particularly in IT and engineering, many end-clients and agencies will only engage with limited companies. If you’re operating through a personal service company to manage IR35 considerations, the limited company structure isn’t optional — it’s how the market works. Similarly, some public sector frameworks and larger corporate procurement processes have requirements that effectively exclude sole traders.
Beyond compliance requirements, there’s a perception element. Trading as a limited company can signal a certain level of permanence and professionalism to prospective clients. That’s not a reason to incorporate on its own, but it’s a genuine secondary benefit for anyone where client perception and contract eligibility matter.
The flip side: for sole traders in service businesses where clients are individuals rather than companies — a personal trainer, a freelance copywriter, a local tradesperson — the business structure is largely invisible to clients and has no bearing on winning work. The credibility argument carries very different weight depending on your market.
Our take
The sole trader vs limited company decision isn’t a one-size-fits-all answer, but it’s not as complicated as it’s sometimes made out to be either. If your profits are modest and your risk is low, sole trader is simpler and often cheaper. If you’re consistently profitable above £30,000–£35,000, facing meaningful professional liability, or working in a market where incorporation is expected, a limited company is very likely worth the extra overhead.
What we’d caution against is incorporating for the wrong reasons — because everyone else seems to be doing it, or because you read somewhere that limited companies always pay less tax. The structure needs to fit your situation, your profit level, and where you’re heading.
If you’re weighing this up and want a straight answer based on your actual numbers, it’s exactly the kind of thing we help clients think through at DG Accountancy. No jargon, no generic checklists — just a clear view of what makes sense for you.
Frequently asked questions
At what profit level does a limited company save tax?
There’s no single threshold, but in our experience the tax saving from a limited company structure typically starts to outweigh the additional costs and accountancy fees once your consistent annual profits are above £30,000–£35,000. Below that level, the admin cost often cancels out the benefit. Your exact position depends on your salary strategy, dividend policy, and personal circumstances.
Can I change from sole trader to limited company later?
Yes — and many people do. You can incorporate at any point by registering a new company with Companies House, then transferring your business activity across. It’s a straightforward process that a good accountant can guide you through. There’s no obligation to incorporate from day one, and starting as a sole trader while you build your income is a perfectly sensible approach.
Do limited companies pay less tax than sole traders?
Often, but not automatically. Corporation Tax rates (19%–25%) are lower than the higher Income Tax rates, and the ability to take dividends at lower effective rates creates a tax efficiency. But you also have to factor in higher accountancy costs, the employer’s NIC you pay on your own salary, and the fact that you can’t spend company profits on personal expenses without tax consequences. The saving is real at the right profit level, but it needs to be modelled properly.
Is a limited company better for contractors specifically?
For many contractors — particularly in IT, engineering, and professional services — yes. The limited company structure is the norm in those markets, and some end-clients or agencies will only engage through a limited company. IR35 is also a consideration that shapes how contractors structure their work. We’d recommend getting advice that’s specific to your sector and contract situation before deciding.
Do I need to register for VAT as a sole trader or limited company?
Both sole traders and limited companies must register for VAT once their taxable turnover exceeds the current threshold, which stands at £90,000 for 2026. You can also register voluntarily below that threshold, which can be advantageous if you work primarily with VAT-registered businesses. The obligation applies to the business activity itself, not the structure you operate through.