Sole trader or limited company – what’s the difference?

When you start a business in the UK, one of the first decisions you’ll face is choosing your legal structure. Most entrepreneurs pick between becoming a sole trader or forming a limited company.

At first glance, the choice seems simple: sole traders enjoy ease and flexibility, while limited companies offer protection and potential tax benefits. But there’s more to the decision than meets the eye, especially when it comes to your income, appetite for risk, and long-term ambitions.

This guide explains the key differences, compares the advantages and disadvantages, and provides a framework for determining which route best suits your goals.

What’s the difference between a sole trader and a limited company?

Both structures are popular and valid ways to start a business in the UK. The main distinction is that a sole trader and their business are legally the same, whereas a limited company is a separate legal entity. This legal distinction affects everything from liability to tax treatment.

• What is a limited company?
• Is it worth forming a limited company? The insider’s guide
• Limited liability: what does this mean for you and your company?

Here’s how they compare at a glance:

Feature	Sole trader	Limited company
Legal status	Not legally distinct – you and the business are the same entity	Separate legal entity, registered at Companies House
Liability	Unlimited – you are personally responsible for debts	Limited – personal assets protected beyond what you invest
Tax	Income Tax and NICs on all profits	Corporation Tax on profits, dividends taxed separately
Setup	Register with HMRC for Self Assessment	Incorporate online at Companies House
Admin	Simple bookkeeping, annual tax return	Annual accounts, Corporation Tax return, Companies House filings
Perception	Seen as small and informal	Seen as professional and credible

Let’s examine the strengths and weaknesses of each structure to see how this plays out in practice.

Pros and cons of operating as a sole trader

For many freelancers and early-stage entrepreneurs, becoming a sole trader is the easiest way to get started.

Advantages of being a sole trader

Simple setup

Registering with HMRC is quick and free. There’s no need to incorporate at Companies House, and you can be up and running in minutes.

Low running costs

Ongoing filing requirements are minimal, and accounting costs are typically lower than those of a company. Many sole traders even manage their own accounts and tax returns.

Full control

All decisions rest with you, which means you can act quickly without consulting anyone else.

Direct profit

All profits go to you directly – there’s no legal distinction between personal and business income.

Privacy

No personal or business details are published on the public record, unlike limited company information at Companies House.

Disadvantages of being a sole trader

Unlimited liability

You and your business are legally the same. That means you’re personally liable for all debts, claims, and obligations. 

Harder to raise finance

Many lenders and investors view limited companies as more stable and creditworthy than sole traders, making them more willing to offer funding.

Perception

Sole traders can be seen as smaller or less established than companies, which may affect their credibility with larger clients.

Less tax-efficient at scale

At lower incomes, the simplicity works in your favour. But as profits grow, you may pay more in Income Tax and NICs than you would under a limited company structure.

For side hustles or early experiments, sole trader status is often enough. Once your income grows or your risk exposure increases, the simplicity of sole trader status may start to feel restrictive. That’s when many people start to consider alternatives.

Pros and cons of operating as a limited company

A limited company takes more effort to set up and maintain, but it comes with benefits that can outweigh the admin, particularly for growing businesses.

Advantages of a limited company

Limited liability

As a shareholder, your personal liability is limited to what you’ve invested or guaranteed. The company exists as its own entity, so your personal assets are shielded from business debts.

Tax efficiency

Companies can be more tax-efficient, especially at higher profit levels. Directors can take income as a mix of salary and dividends, reducing their overall tax burden.

Professional credibility

Many clients, suppliers, and lenders see companies as more established and professional. Incorporation can give you an edge when bidding for work or negotiating contracts.

Access to capital

Limited companies often find it easier to raise money, whether through bank lending or by issuing shares to investors.

Continuity

A limited company continues to exist even if directors or shareholders change, giving businesses greater long-term continuity.

Disadvantages of a limited company

Increased administration

Companies must file annual accounts, submit Corporation Tax returns, and keep up with Companies House reporting requirements.

Public disclosure

Company details (including directors, shareholders, and registered addresses) are published on the public record.

Restrictions on withdrawing funds

You cannot simply take money from a company bank account. Unlike sole traders, company funds can’t be used freely for personal expenses without tax implications. Funds must be withdrawn as salary, dividends, or loans, all subject to strict rules.

Added costs

Many company directors hire accountants to ensure compliance, which adds to the cost of running the business.

For many entrepreneurs, incorporation is the point where a business shifts from being personal to being professional. But the true impact of that shift becomes clearest when you look at how each structure is taxed.

Tax differences between a sole trader and a limited company

Taxes are often the deciding factor. The way profits are taxed under each structure can have a big impact on your take-home pay.

Income Tax rates for sole traders

Sole traders pay Income Tax and National Insurance contributions (NICs) on profits above the personal allowance (£12,570 in 2026/27).

• 20% on income from £12,571–£50,270
• 40% on income from £50,271–£125,140
• 45% on income above £125,140

Bear in mind that the Personal Allowance is reduced by £1 for every £2 earned over £100,000 – meaning that it’s fully lost once income exceeds £125,140. And because all profits are taxed as income, liabilities can escalate quickly as earnings rise.

Corporation Tax and dividends for limited companies

Limited companies pay Corporation Tax on profits, at rates between 19% and 25%. Directors can then pay themselves in two ways:

• A salary, which is deducted before Corporation Tax.
• Dividends, which are paid after Corporation Tax.

Dividends are taxed separately from salary and aren’t subject to National Insurance, which can make them more efficient at higher incomes. The first £500 of dividend income (2026/27) is tax-free.

This structure often makes companies more tax-efficient once profits pass a certain level, though the savings depend on how much you earn and how you split income between salary and dividends. Once you understand how tax treatment differs, the next step is knowing what’s required to get started in either structure.

How to register your business in the UK

Registering as a sole trader

Setting up as a sole trader is straightforward. You simply sign up for Self Assessment with HMRC online. You’ll need to provide:

• Your personal details (name, address, NI number)
• Your business name and start date
• The nature of your business activities

HMRC will then issue your Unique Taxpayer Reference (UTR) and confirm your filing responsibilities.

Registering a limited company

Forming a company involves an application to Companies House. You’ll need:

• A unique company name
• A registered office address
• At least one director and one shareholder
• Details of people with significant control (PSCs)
• SIC code(s) for your business activity
• A registered email address

Once approved, Companies House issues your incorporation documents and you can begin trading immediately. While it’s possible to DIY your company formation, it can be confusing, and unless you use a registered office service, your home address may appear publicly.

That’s why many new business owners prefer to get a helping hand, using company services like ours to make sure the admin is taken care of correctly and privately from the start.

Should I switch from sole trader to limited company?

Many entrepreneurs start as sole traders, then incorporate later. The tipping point usually comes when profits grow, risks increase, or the need for credibility becomes more pressing.

If you’re in a similar position, a checklist can help you weigh the decision more clearly. When weighing your options, ask yourself:

• How much profit do I expect to make in the next few years?
• Am I comfortable with unlimited liability?
• Am I comfortable with full personal liability and minimal reporting, or do I prefer added protection even with extra admin?
• Will I need outside investment or borrowing?
• Do I want my business identity to remain personal or appear more formal and professional?

Your answers will point you toward the structure that fits your goals best. And whichever you choose, it’s worth remembering that structures can be changed as your business evolves.

Understand business structures and your next steps

Both sole trader and limited company structures are valid ways to start a business in the UK. The right choice depends on your goals, expected income, and how much responsibility you’re comfortable shouldering on your own.

If you’re looking for ease and flexibility, becoming a sole trader might feel like the obvious first step. While running your business solo can be empowering, many find the realities more demanding than expected. For those who want greater credibility, limited liability, and potential tax efficiencies as their income grows, incorporation tends to offer a more robust long-term setup.

Ready to incorporate? 1st Formations makes it easy to register your company online with expert support, official documents, and optional services like a registered office address.