This is one of the questions I get asked more than any other. Should I stay as a sole trader or set up a limited company? The honest answer is: it depends on your income level, how much you need to draw out, and your longer-term plans. This guide gives you the full picture.

What is a sole trader?

As a sole trader, you and your business are legally the same entity. You register with HMRC as self-employed, keep records of your income and expenses, and file a self-assessment tax return each year. You pay income tax and National Insurance on your profits — whether you draw the money out or not.

The advantages: simple to set up and run, minimal administration, full control, and complete privacy (no public filing requirements). The disadvantages: you are personally liable for all business debts, and the tax treatment is less flexible as income grows.

What is a limited company?

A limited company is a separate legal entity — it exists independently of you. You are a director (running the company) and a shareholder (owning it). The company pays Corporation Tax on its profits. You take money out as a combination of salary and dividends.

The advantages: more tax-efficient at higher income levels, liability protection, and a more professional image with some clients. The disadvantages: more administration, higher accountancy costs, and your accounts are filed publicly at Companies House.

The tax comparison — real numbers

The key difference is how profits are taxed. As a sole trader, all profit is subject to income tax (20%, 40%, or 45% depending on total income) and Class 4 NIC (9% up to the upper profits limit, 2% above it).

Through a limited company, you typically pay yourself a low salary (around £12,570 — the personal allowance) and draw the rest as dividends. The company pays 19–25% Corporation Tax on its profits. Dividends are taxed at lower rates than income — 8.75% for basic rate, 33.75% for higher rate — and are not subject to National Insurance.

At £50,000 profit, the saving from operating as a limited company is typically in the range of £3,000–£5,000 per year. At £80,000 profit, it can be significantly more. These figures vary based on personal circumstances and how much you need to draw out.

The crossover point

As a rough guide, a limited company typically becomes financially beneficial when your annual profit consistently exceeds £30,000–£35,000. Below that level, the tax saving is modest and the additional accountancy cost (typically £800–£1,500 per year more than sole trader accounts) may outweigh the benefit.

This is a guide — not a rule. Your specific situation, including other income sources and how much you need to draw, changes the calculation. We model this with your actual numbers before recommending anything.

The administration difference

As a sole trader, the annual requirements are: keep records of income and expenses, and file one self-assessment return by 31 January. That is it.

As a limited company director, the annual requirements are: prepare statutory accounts, file a Corporation Tax return, file a Confirmation Statement at Companies House, and file a personal self-assessment return as a director. Four filings instead of one, and statutory accounts must meet specific accounting standards.

A good accountant makes all of this manageable — but the administration overhead is real and should be factored in.

Liability protection

A limited company provides separation between personal and business liability. If the company has debts it cannot pay, your personal assets are generally protected (with exceptions for director loans, personal guarantees, and wrongful trading).

As a sole trader, there is no such separation — your personal assets can be pursued for business debts. For most small service businesses in Brighton, this is a theoretical rather than practical concern, but it becomes more relevant if you have significant contracts, premises, or staff.

When sole trader is clearly the right choice

  • Annual profits below £30,000
  • You need to draw all your income immediately and cannot leave money in the company
  • You are testing a new business idea and want to keep things simple
  • The simplicity and privacy are important to you

When a limited company makes clear sense

  • Annual profits consistently above £35,000
  • You can afford to leave some profit in the company rather than drawing it all
  • Your clients prefer or require a limited company structure
  • You want liability protection
  • You are building a business you may eventually sell

Can you switch later?

Yes — many Brighton business owners start as sole traders and incorporate when their income grows enough to justify it. There are no penalties for switching. The process is straightforward: register a new company and start trading through it. Your accountant handles the transition.

Note that incorporating mid-year creates two sets of accounts for that year, which adds a small amount of complexity. Most people choose to incorporate at a natural financial year end.

The right answer for you

There is no universal right answer to this question. The right structure depends on your income, your need for drawings, your sector, your clients, and your plans. What I can tell you is that getting it right from the start — or making the switch at the right time — is worth considerably more than the cost of a conversation with an accountant who will give you a straight answer.