Sole Trader vs Limited Company: Which is Right for You?

If you’re starting a business on your own, the main choice is usually whether to operate as a sole trader or form a private limited company. Both can work for a small business. The better fit depends on the risks you take, how you want to own and grow the business, and what you plan to do with its profits.

A public limited company (PLC) is another type of company, but it is rarely a starting point for a new founder. Here’s what each structure means in practice.

Sole trader: you and the business are legally the same

As a sole trader, you run the business personally. You do not form a company or register at Companies House. You can trade under your own name or a business name, but you remain personally responsible for the business’s debts.

You can start trading before registering for Self Assessment. You generally need to register with HMRC if your gross trading income exceeds £1,000 in a tax year. You must keep business records and report your taxable profit.

Why choose it?

• It is quick to start and generally simpler to administer.

• You do not file company accounts at Companies House.

• You control the business without setting up a company or issuing shares.

What are the trade-offs?

• You are personally responsible for business debts and claims.

• You cannot issue shares to bring in equity investors.

• The business does not have a separate legal identity that continues independently of you.

Sole trader can make sense if you are testing an idea, working independently, or running a business with manageable financial and legal risks. It can also remain the right structure for an established business. There is no profit level at which you automatically need to incorporate.

Private limited company: a separate legal entity

A private limited company is registered at Companies House and exists separately from its owners. The company can enter into contracts, own assets and owe money in its own name. A founder can be both its director, responsible for running it, and its shareholder, who owns it.

A private company cannot offer its shares to the general public, but it can bring in co-founders or investors through a properly structured share issue. If ownership is part of your plan, read our guide

Understanding Shareholders and Share Structure in a UK Limited Company

Why choose it?

• Shareholders generally have limited liability for the company’s debts.

• The company can issue shares and establish clear ownership between founders and investors.

• You can leave some profits in the company for future business use rather than withdrawing everything personally.

What are the trade-offs?

• You must keep company records and meet filing obligations, including annual accounts and a confirmation statement.

• The company may need to file a Corporation Tax return and run payroll if it pays a salary.

• Some company and director information is publicly available at Companies House.

• Running the company may involve accounting, payroll and filing costs.

Limited liability is valuable, but it is not a promise that your personal assets can never be at risk. You may still be personally responsible for an obligation you guarantee, and directors can face personal consequences in certain circumstances, particularly if they breach their duties when a company is in difficulty.

A limited company is often worth considering if you want co-founders or equity investment, plan to build a business that can operate beyond you, or face risks that make legal separation especially useful. Our guide to fundraising, intellectual property and tax reporting explores some of those decisions in more detail.

How your business structure affects fundraising, IP, and tax reporting

PLC: able to offer shares to the public

A public limited company can offer shares to the public. It may be listed on a stock exchange, but being a PLC does not mean it is listed.

A PLC needs at least two directors, a qualified company secretary and the required minimum share capital. It also faces more extensive legal and administrative requirements. For someone starting a typical small business, the practical comparison is between sole trader and private limited company.

How does the tax compare?

A company does not automatically mean a lower tax bill. A sole trader pays Income Tax and, where applicable, Class 4 National Insurance on business profits. A limited company pays Corporation Tax on its profits; the founder may then pay tax when taking money out as salary or dividends. A salary can also create employer National Insurance costs for the company.

The outcome depends on how much profit you withdraw, how you take it, whether you have other income, and what it costs to run the company.

A worked comparison for 2026/27

The figures below show total tax and National Insurance, rounded to the nearest pound. “Annual profit” means business profit before paying the founder.

For the limited company example, one founder takes a £12,570 salary and withdraws all remaining post-tax profit as dividends. The company pays employer National Insurance on the salary and cannot claim Employment Allowance. The example assumes a full year of trading, no other personal income, no associated companies and no other reliefs. It excludes accountancy and other administration costs. The sole trader Income Tax figures use the rates for England, Wales and Northern Ireland; Scottish figures would differ.

For example, at £40,000 profit, the company pays the founder a £12,570 salary and incurs £1,135.50 in employer NI. That leaves £26,294.50 of company profit, on which Corporation Tax is approximately £4,995.96. If the founder withdraws the remaining £21,298.54 as a dividend, dividend tax is approximately £2,235.84. Total tax and NI is therefore approximately £8,367, compared with £7,132 for the sole trader in this example.

These figures illustrate one way to take money from a company. Leaving profits in the company, changing the salary and dividend mix, or having other income can change the result. Extra company administration costs also matter. You can explore different figures with our pay yourself calculator, then get tailored advice before making a tax-led decision.

Which structure should you choose?

Start with what you need the business to do:

• Testing a straightforward idea on your own? Sole trader may give you the simplest start.

• Want to share ownership or seek equity investment? A limited company gives you a way to issue shares and record who owns what.

• Concerned about business liabilities? Consider the protection a company can provide, alongside insurance, contracts and any personal guarantees you might be asked to give.

• Choosing mainly because of tax? Compare your likely total taxes and costs based on how much money you need to take out, rather than relying on a profit threshold.

If you decide to incorporate, FOUNDRS can guide you through setting up a limited company. If you are still working through the first decisions, see our guide on starting a business in simple steps.

Starting a Business in Simple Steps

Can you start as a sole trader and form a company later?

Yes. Many businesses change structure as their needs develop. Forming a company later creates a new legal entity, though, so it is more than changing a label. You may need to deal with existing contracts, assets, intellectual property, banking and VAT registration, as well as any tax consequences of transferring the business.

Starting as a sole trader does not close off incorporation later. Equally, if shared ownership or investment is already central to your plan, it may be easier to establish the company structure at the outset.