Sole Trader vs Limited Company in the UK: Which One Should You Choose?

One of the first real decisions you face when starting a business in the UK is how to structure it. Do you register as a sole trader and keep things simple? Or do you set up a limited company and take on more admin in exchange for more protection and potentially lower taxes?

It is a question that trips up many new business owners because the answer is genuinely different depending on your situation, your income level, your industry, your risk appetite, and what you are planning to build. There is no universally right answer. But there is usually a right answer for you, and this guide will help you find it.

We will cover what each structure actually means, how the tax works in 2025/26, the practical differences in day-to-day running, and the specific situations where one makes more sense than the other.

What is a sole trader?

A sole trader is the simplest way to run a business in the UK. You and your business are the same legal entity. You register with HMRC as self-employed, file a Self Assessment tax return each year, and pay Income Tax and National Insurance on your profits.

There is no registration fee, no Companies House filing, and no complicated structure to maintain. You can start trading almost immediately after notifying HMRC, and if your self-employment income is under £1,000 per year, you do not even need to register at all.

The simplicity comes with a trade-off: unlimited personal liability. If your business runs into debt or a client takes legal action against you, your personal assets, your home, your savings, and your car are all at risk. You and the business are the same thing in the eyes of the law, which means there is no protective barrier between your personal finances and your business obligations.

What is a limited company?

A limited company is a separate legal entity from you. The company has its own identity, its own bank account, its own assets and liabilities, and its own tax obligations. You are a director of the company, and typically its sole shareholder, but the company exists independently of you.

This separation is the fundamental advantage of limited company status. If the company runs into debt or faces legal action, creditors can pursue the company's assets, but generally cannot touch your personal assets. Your liability is limited to the amount you have invested in the company.

Setting up a limited company involves registering with Companies House, which costs £12 online and takes less than 24 hours. Ongoing obligations include filing annual accounts, a corporation tax return, a confirmation statement, and, if you pay yourself a salary, running a PAYE payroll scheme.

How the tax works: the key differences

Tax is usually the deciding factor when people make this choice, so it is worth understanding the numbers properly.

Sole trader tax in 2025/26

As a sole trader, your profits are treated as your personal income. You pay:

• Income Tax at 20% on profits between £12,571 and £50,270 (basic rate)
• Income Tax at 40% on profits between £50,271 and £125,140 (higher rate)
• Income Tax at 45% on profits above £125,140 (additional rate)
• Class 4 National Insurance at 6% on profits between £12,570 and £50,270, and 2% above £50,270
• No Class 2 NI is required if your profits exceed £6,845, though you can make voluntary contributions to protect your State Pension record

Your first £12,570 is tax-free thanks to the Personal Allowance.

Example: A sole trader with £40,000 profit in 2025/26 would pay approximately £5,486 in Income Tax and £1,642 in Class 4 NI, a total tax bill of around £7,128, leaving a take-home of roughly £32,872.

Limited company tax in 2025/26

A limited company pays Corporation Tax on its profits at 19% (for profits up to £50,000) or up to 25% (for profits over £250,000, with a marginal rate in between). The company pays this tax, not you personally.

As a director, you typically pay yourself in two ways:

• A salary — is usually set at or around the National Insurance threshold (£12,570 in 2025/26) to minimise NI while still counting as employment for State Pension purposes
• Dividends — paid from post-Corporation Tax profits. Dividends are taxed at 8.75% (basic rate), 33.75% (higher rate), or 39.35% (additional rate), and crucially, they do not attract National Insurance

The combination of a low salary and dividends can be more tax-efficient than paying the same income as a sole trader, but the gap has narrowed significantly in recent years as dividend tax rates have increased and the dividend allowance has fallen to just £500 per year (2025/26).

Example: A limited company with £40,000 profit, director taking a £12,570 salary and the remainder as dividends, would typically see a lower overall tax bill than the sole trader equivalent, but only after accounting for accountancy fees of £500–£1,500 per year that come with running a limited company properly.

When does incorporating actually save money?

The breakeven point where a limited company edges out on tax efficiency generally sits around £40,000–£50,000 in annual profits, depending on your extraction strategy. Below this level, the tax savings from incorporating often do not outweigh the additional accountancy fees and administrative burden.

In recent years, corporation tax, dividend income tax, and employer's National Insurance contributions have all risen, meaning that for many business owners the tax advantage of a limited company is now smaller than it used to be. This is not a reason to avoid incorporating, but it is a reason not to assume incorporating will automatically save you money without running the numbers for your specific situation.

The practical differences

Beyond tax, the day-to-day reality of running each structure is quite different.

Admin and paperwork
As a sole trader, your obligations are minimal. You keep records of your income and expenses, file a Self Assessment tax return each year by 31 January, and register for VAT if your turnover exceeds £90,000. Many sole traders manage this themselves without an accountant.

As a limited company director, your obligations are more involved. You must prepare annual accounts for both Companies House and HMRC, file a Corporation Tax return, submit a confirmation statement to Companies House every year, and run a PAYE payroll if you pay yourself a salary. Most limited company directors use an accountant to manage this, typically costing between £500 and £1,500 per year.

Privacy
As a sole trader, your financial information stays private. Nothing is published publicly about your income, assets, or business dealings. As a limited company director, your company data, including basic financial information, is visible on Companies House and accessible to anyone. Your name, registered address, and filed accounts are all public record. For many people, this is not a concern, but it is worth being aware of.

Personal liability
This is where the structures differ most fundamentally. As a sole trader, there is no legal separation between you and your business. If a customer sues you or a supplier chases you for unpaid invoices, they can go after your house, your car, and your savings. As a limited company, your personal assets are protected. Creditors can only pursue the company's assets, not yours. There are exceptions, fraud, personal guarantees, and wrongful trading, but the general principle of separation is the fundamental benefit of incorporating.

If your business involves meaningful financial risk, large contracts, physical products, employees, or client liability, this protection matters significantly.

Business name protection
As a sole trader, your business name is not legally protected. Anyone can trade under the same name as you, which can cause confusion and reputational problems if your business grows. As a limited company, your registered company name is protected. No other company can register the same name with Companies House, which gives you a degree of brand protection that sole traders do not have.

Credibility and funding
Some customers and suppliers see sole traders as less established compared to limited companies, which could impact your ability to attract certain types of business. This matters more in some industries than others. Contractors and consultants working with large corporates and businesses in professional services often find that limited company status opens doors that are harder to open as a sole trader. A limited company structure also makes it easier to attract funding and investment, since it allows you to issue shares or bring in partners. If you are planning to raise external investment at any point, a limited company is effectively a prerequisite.

Which structure is right for you?

There is no single right answer, but here are the situations where each structure typically makes the most sense.

Start as a sole trader if:

• You are in the early stages and testing whether the business will work
• Your annual profits are currently below £25,000–£30,000
• You offer low-risk services with no significant client liability
• You want minimal admin and to keep full control of every decision
• You are running a side hustle alongside employment
• Privacy is important to you

Consider a limited company if:

• Your annual profits are consistently above £40,000–£50,000, and you want to explore tax efficiency
• Your work involves meaningful financial risk or significant client liability
• You are working in contracting, consulting, IT, or professional services where clients prefer or require company status
• You are planning to bring in investment, take on business partners, or issue shares
• You want to protect your personal assets and separate your personal finances from your business
• You are building something with long-term growth plans that may require formal funding

The most common path is to start as a sole trader, keep things simple while the business finds its feet, and then incorporate once profits and risk levels justify the extra complexity. Many of today's successful UK limited companies started life as sole trader operations.

Managing your finances, whichever structure you choose

Whether you are a sole trader or a limited company director, the fundamentals of good financial management are the same: keep clean records of your income and expenses, invoice clients professionally, and know what your business owes before HMRC asks.

Built For Small Business is free for both sole traders and limited company directors. You can send professional invoices, track expenses, manage client records, and keep your financial history organised in one place, making Self Assessment or your accountant's end-of-year work significantly easier.

Frequently Asked Questions

What is the main difference between a sole trader and a limited company?
A sole trader and their business are the same legal entity; you are personally responsible for all debts and liabilities. A limited company is a separate legal entity, which means your personal assets are protected if the business runs into financial difficulty.

Is it cheaper to be a sole trader or a limited company?
Starting and running a sole trader business is cheaper, with no registration fee, minimal admin, and no need for an accountant in most cases. A limited company costs £12 to register and typically £500–£1,500 per year in accountancy fees. However, a limited company may be more tax-efficient at higher profit levels, which can outweigh the additional costs.

At what profit level should I consider incorporating?
Most accountants suggest the tax savings from incorporating begin to become meaningful at annual profits of around £40,000–£50,000, depending on how you extract income from the company. Below this level, the extra accountancy costs often outweigh the tax savings.

Can I change from sole trader to limited company later?
Yes. This is a common path, starting as a sole trader and incorporating later when profits and circumstances justify it. You would need to register a new limited company, open a business bank account in the company name, notify your clients and suppliers, and file a final Self Assessment as a sole trader covering your income up to the date you stopped trading as one.

Do I need an accountant as a sole trader?
Not legally, many sole traders manage their own Self Assessment returns. However, as your income grows, an accountant can help you claim all allowable expenses and ensure your return is correct. It is worth considering once your annual income exceeds £30,000–£40,000.

Do I need an accountant as a limited company director?
Most limited company directors use an accountant given the volume of filings required, annual accounts, Corporation Tax return, confirmation statement, and payroll. While it is legally possible to do this yourself, the complexity means most directors find the accountancy fee worthwhile.

What taxes does a limited company pay?
The company pays Corporation Tax on its profits (19–25% depending on profit level). As a director, you pay Income Tax and National Insurance on your salary, and Income Tax on dividends above the £500 annual dividend allowance.

What is the VAT threshold for both structures?
The same threshold applies to both sole traders and limited companies; you must register for VAT if your taxable turnover exceeds £90,000 in a rolling 12-month period.

Is a sole trader right for a Nigerian entrepreneur starting a business in the UK?
Yes, if you are based in the UK and starting a business, you can register as a sole trader regardless of your nationality. It is often the simplest first step, particularly if you are in the early stages and want to keep setup costs and admin minimal. You will need a UTR number and to register for Self Assessment with HMRC.

Can a limited company have just one person?
Yes. A single-person limited company, sometimes called a personal service company or one-man limited company, is very common in the UK. You can be the sole director and sole shareholder, which means you own and run the company entirely by yourself while still having the legal separation and liability protection that comes with limited company status.

This article is for informational purposes only and does not constitute tax or legal advice. Tax rates and thresholds are based on 2025/26 HMRC figures and may change in future Budgets. Always consult a qualified accountant for advice specific to your circumstances.