The self employed vs limited company question comes up constantly, and it deserves a proper answer rather than a shrug and a “it depends.” The truth is, it does depend — but it depends on specific, identifiable things. Profit level, how much you want to take out of the business each month, whether you work with larger clients, and how comfortable you are with additional admin are all factors that genuinely shift the answer.

In our experience, most people either incorporate too early — before there is any real tax benefit — or they put it off long past the point where a limited company would have saved them meaningful money. Neither is ideal. What we want to do in this post is lay out how we think through this decision with clients, so you can start forming your own view before you sit down with an accountant.

As a sole trader, you pay Income Tax on your profits at 20%, 40%, or 45% depending on how much you earn, plus Class 4 National Insurance Contributions on top of that. Every pound of profit is taxed as personal income, which is straightforward but not particularly efficient once your earnings grow.

A limited company pays Corporation Tax on its profits — currently 19% for profits up to £50,000, rising on a sliding scale towards 25% for profits above £250,000. More importantly, as a director-shareholder you can structure your income as a combination of a modest salary and dividends. Dividends are taxed at lower rates than employment income and are not subject to National Insurance, which is where the efficiency comes from.

The crossover point where a limited company starts to produce a meaningful tax advantage is typically somewhere around £35,000–£40,000 of profit per year, once you account for the additional accountancy costs a limited company brings. Below that, the savings are often marginal at best, and the extra admin overhead erodes whatever you gain. Above that figure, the numbers tend to move more clearly in favour of incorporation — though it is never a guaranteed win without running the actual figures for your situation.

One factor that has shifted the self employed vs limited company conversation in 2026 is Making Tax Digital for Income Tax (MTD ITSA). From April 2026, sole traders and landlords with gross income above £50,000 are required to submit quarterly digital updates to HMRC rather than a single annual Self Assessment return. The threshold drops further — to £30,000 in April 2027, and to £20,000 in April 2028 — meaning this will affect a very large proportion of self-employed people over the next two years.

Limited companies are exempt from MTD for Income Tax entirely. They continue to file an annual Corporation Tax return, which for many business owners feels considerably more manageable.

We are not suggesting that MTD ITSA is a reason on its own to incorporate — if the tax maths do not add up, they do not add up. But for someone already sitting on the fence near the profit threshold, the quarterly reporting obligation is a genuine consideration. If you are earning over £50,000 gross as a sole trader, the administrative burden of MTD is now a real part of the equation, not a background footnote.

The right response to MTD is not necessarily to rush into incorporation — it may simply be to get your bookkeeping in order with good cloud software, which we can help with either way. But it is worth understanding what you are signing up for if you stay self-employed at higher income levels.

A limited company is a separate legal entity. That sounds straightforward, but what it means in practice is a set of ongoing obligations that sole traders simply do not have.

• Annual accounts and Corporation Tax return — filed with Companies House and HMRC each year.
• Confirmation statement — an annual update to Companies House confirming company details are correct.
• Director responsibilities — as a director, you have legal duties under the Companies Act, including acting in the interests of the company and maintaining accurate records.
• Payroll — even if you are the only employee, paying yourself a salary means running a PAYE scheme.
• Dividend paperwork — dividends need to be properly declared with board minutes and vouchers, not just transferred to your bank account.

None of this is unmanageable, and a good accountant will handle most of it for you. But the accountancy fees for a limited company are typically higher than for a sole trader, and it is important to factor that into the savings calculation. We always run this comparison honestly with clients — there is no point paying more in accountancy costs than you are saving in tax.

If you work as a contractor through a limited company, there is an additional consideration that sole traders do not face: IR35, formally known as the off-payroll working rules.

IR35 exists to ensure that workers who would effectively be employees — if they were not operating through a company — pay broadly the same tax as employees. If a contract falls inside IR35, the tax efficiency of a limited company largely disappears, because your income from that contract is treated as employment income for tax purposes.

For contracts with medium or large clients, it is now the client’s responsibility to determine your employment status and issue a Status Determination Statement. For contracts with smaller clients, the responsibility sits with your own company. HMRC’s CEST tool (Check Employment Status for Tax) can help assess this, and HMRC stands by the result where accurate information has been provided.

The IR35 question does not make incorporation wrong for contractors — many genuinely fall outside the rules and benefit significantly from operating through a company. But if your whole business is one long-term contract that looks a lot like employment, it is worth getting proper advice before assuming a limited company will deliver the tax savings you are expecting.

Incorporation gets talked about as a natural progression, as if every serious business owner eventually becomes a limited company. We do not share that view. Sole trader status has real advantages in the right circumstances.

The setup and ongoing admin is minimal. You report your income and expenses once a year through Self Assessment (subject to MTD rules as your income grows). There is no separation between you and the business, which can actually simplify decisions rather than complicate them. And if the business has a difficult year or you want to wind things down, there is no formal dissolution process to navigate.

For someone starting out, testing a new business idea, or running a lower-profit side income alongside employment, staying self-employed is often the cleaner, cheaper, and more sensible choice. We have seen clients incorporate because they felt they “should” — only to spend more on accountancy than they saved in tax for the first two years.

The question is not which structure sounds more professional. It is which structure makes financial sense given where your business actually is right now.