What Is a Limited Company? A Plain English Guide for UK Business Owners

If you are starting a business in the UK, you will quickly come across the term “limited company.” It is one of the most common business structures in the country, with nearly 5.5 million companies on the register as of March 2026. But what is a limited company, exactly? And do you need one?

This guide explains what a limited company is, how it works, what it costs, and how to decide whether it is the right structure for your business. No jargon, no accounting degree required.

What Is a Limited Company?

A limited company is a business that is legally separate from the people who own and run it. When you set up a limited company, you are creating a new legal “person” that can do things in its own name: earn money, own property, enter into contracts, employ people, owe debts, and pay taxes.

This is the key difference between a limited company and being a sole trader. As a sole trader, you and your business are the same thing in the eyes of the law. As a limited company director, you and your company are two separate entities.

Think of it like a container. You put money into the container (by buying shares), and the container operates the business. The container owns the assets, earns the revenue, and is responsible for the debts. Your personal finances sit outside the container.

Why Is It Called “Limited”?

The word “limited” refers to limited liability. This means that if the company runs into financial trouble, your personal liability is limited to the amount you have invested in the company, usually the value of your shares.

In practical terms, if you set up a limited company with 100 shares at £1 each and the company later accumulates £50,000 in debts, you could lose your £100 investment but your personal savings, your home, and your car are generally protected. The company is responsible for its own debts, not you personally.

This is one of the biggest reasons people choose a limited company over being a sole trader. As a sole trader, there is no separation. If your business owes money, creditors can pursue your personal assets to recover it.

An important caveat: limited liability is not absolute. If you personally guarantee a business loan (which banks often require for small companies), you are personally liable for that specific debt. And if you act fraudulently or trade while knowingly insolvent, you can be held personally responsible. But for normal, honest business operations, limited liability provides meaningful protection.

How Does a Limited Company Work?

A limited company has a simple structure with three key roles.

Directors run the company. They make the day-to-day business decisions, sign contracts, manage finances, and are legally responsible for ensuring the company meets its obligations. Every limited company must have at least one director who is a real person aged 16 or over. In most small businesses, the founder is the sole director.

Shareholders own the company. They hold shares that represent their ownership stake. Shareholders receive dividends (a share of the company’s profits) when the directors decide to distribute them. In many small businesses, the director and the sole shareholder are the same person.

Persons with Significant Control (PSCs) are individuals who hold more than 25% of the company’s shares or voting rights, or who otherwise have significant influence over the company. PSC information is recorded on the public register at Companies House. For a single-founder company, you are the director, the shareholder, and the PSC.

The company also has a set of rules called the Articles of Association that govern how it operates: how decisions are made, how shares are issued, and how directors are appointed or removed. Most small companies use the standard model articles provided by the government, which work well for straightforward businesses.

What Types of Limited Company Exist?

There are two main types of limited company in the UK.

Private company limited by shares (Ltd) is by far the most common. This is what most people mean when they say “limited company.” The owners hold shares, and their liability is limited to the value of those shares. Profits can be distributed to shareholders as dividends. This is the structure used by the vast majority of small businesses, freelancers, contractors, and entrepreneurs.

Private company limited by guarantee has no shares or shareholders. Instead, it has members who guarantee to contribute a nominal amount (often just £1) if the company is wound up. This structure is typically used by charities, community interest companies, clubs, and not-for-profit organisations.

There are also public limited companies (PLCs), which can sell shares to the public and are listed on the stock exchange. But if you are reading this guide, a PLC is almost certainly not what you need. For the rest of this article, “limited company” means a private company limited by shares.

How Is a Limited Company Taxed?

A limited company pays tax differently from a sole trader, and understanding this is essential to deciding which structure is right for you.

The company pays Corporation Tax on its profits. The current rates (2026/27) are 19% on profits up to £50,000 and 25% on profits above £250,000, with marginal relief for profits in between.

You pay personal tax on what you take out. As a director, you typically pay yourself in two ways. A small salary, which is taxed through PAYE like any employment income. And dividends, which are taxed at lower rates than salary: 10.75% at the basic rate, 35.75% at the higher rate, and 39.35% at the additional rate, after a £500 tax-free dividend allowance.

This two-layer system (company pays Corporation Tax, then you pay dividend tax on what you extract) is what creates the tax efficiency of a limited company at higher income levels. Because dividend tax rates are lower than Income Tax plus National Insurance rates, you can end up keeping more of your earnings compared to being a sole trader, particularly once profits exceed £50,000 per year.

Below roughly £40,000 to £50,000 in annual profit, the tax advantage is minimal or non-existent once you account for the higher accountancy costs of running a limited company. See our detailed comparison in our sole trader vs limited company guide for a full breakdown at different income levels.

What Are the Advantages of a Limited Company?

Limited liability. Your personal assets are protected from business debts (with the caveats mentioned above). This matters most for businesses that carry financial risk: holding stock, taking on debt, working with large contracts, or operating in sectors where legal claims are possible.

Tax efficiency at higher profits. Once your business earns above £50,000 per year, a limited company typically results in lower overall tax than operating as a sole trader. The gap widens significantly at higher income levels.

Professional credibility. Some clients, particularly larger businesses and corporate organisations, prefer to work with limited companies. Having “Ltd” in your name can signal professionalism and stability, and some procurement processes require suppliers to be incorporated.

Access to Statutory Maternity Pay. As a limited company director, you are an employee of your own company and can qualify for Statutory Maternity Pay, which pays 90% of your average weekly earnings for the first six weeks. Sole traders can only claim Maternity Allowance, which pays a flat rate from day one with no earnings-related uplift.

Pension flexibility. A limited company can make employer pension contributions that are deductible from Corporation Tax and free from National Insurance, offering a more tax-efficient route to retirement saving than personal pension contributions as a sole trader.

Easier to bring in investors or co-founders. A limited company has a ready-made ownership structure through shares. If you want to take on investment, add a business partner, or eventually sell the business, the share structure makes this straightforward.

What Are the Disadvantages?

More administration. You must file annual accounts with Companies House, submit a Corporation Tax return to HMRC, run payroll for your salary, maintain statutory registers, file a Confirmation Statement annually, and keep your identity verification current with Companies House. Most of this is handled by an accountant, but it still costs more than sole trader administration.

Higher costs. Accountancy fees for a small limited company typically run £800 to £1,500 per year, compared to £200 to £600 for a sole trader. Companies House registration costs £100, and the annual Confirmation Statement costs £50. You will also need bookkeeping software (£0 to £40 per month) and possibly a registered office address service (£50 to £150 per year).

Public information. Your company’s accounts, director details, and registered office address are publicly available on the Companies House register. Anyone can look them up. This lack of privacy can be uncomfortable, particularly if you use your home as the registered office.

Less flexibility with money. As a sole trader, the business profits are yours to spend as you wish. In a limited company, the money belongs to the company until you formally extract it as salary or dividends. You cannot simply dip into the company bank account for personal expenses without tax implications.

Do You Need a Limited Company?

For many women starting their first business, the honest answer is: not yet. If you are testing a business idea, freelancing on the side, or earning under £30,000 to £40,000 per year, starting as a sole trader is simpler, cheaper, and perfectly adequate. You can always incorporate later when your income justifies the switch.

A limited company makes sense from the start if you need liability protection for the type of work you do, if you expect to earn above £50,000 quickly, if you are planning a family and want access to Statutory Maternity Pay, or if your clients require you to be incorporated.

The beauty of the UK system is that switching from sole trader to limited company is straightforward and can be done at any point. There is no penalty for starting simple and scaling up.

How to Set Up a Limited Company

Setting up a limited company takes less than 24 hours online and costs £100 through Companies House. You will need a company name, a UK registered office address, details of your directors and shareholders, identity verification (mandatory since November 2025), and your Articles of Association.

For a full walkthrough of every step, read our guide on how to register a company in the UK.

Quick Summary

A limited company is a separate legal entity from you. It protects your personal assets through limited liability, can be more tax-efficient once profits exceed roughly £50,000, and offers benefits like Statutory Maternity Pay and flexible pension planning. The trade-off is more paperwork, higher costs, and less privacy. For most new businesses earning under £40,000 to £50,000, starting as a sole trader and incorporating later is the simplest approach.

Not sure which structure is right for you? Read our sole trader vs limited company comparison for a detailed side-by-side analysis with 2026/27 tax figures.