Different Types of Business Structures in the UK: 2026 Guide
Before you register anything, you need to answer one question: what type of business structure fits you? The UK offers several options, and each one changes how much tax you pay, whether your personal assets are protected, and how much admin lands on your desk every year.
This guide breaks down every major UK business structure — sole trader, partnership, limited liability partnership, private limited company, public limited company, and the lesser-known community interest company — with current 2026 costs, tax treatment, and a clear framework for choosing between them.
Key Takeaways
- Only limited companies (Ltd), LLPs and PLCs offer limited liability — sole traders and ordinary partnerships carry unlimited personal liability.
- Incorporating a limited company now costs £100 online, following the Companies House fee rise from 1 February 2026.
- Sole traders and partnerships keep their finances private; limited companies and LLPs must file accounts publicly at Companies House.
- A Community Interest Company (CIC) is a lesser-known option for businesses with a social or community purpose, with profit distribution restrictions.
- Switching structure later — most commonly sole trader to limited company — is common and doesn’t require starting from scratch.
- The right structure depends on liability tolerance, tax position, privacy preference, and how much admin you’re willing to take on.
Table of Contents
- What Are Business Structures?
- The Main Types of Business Structures in the UK
- Side-by-Side Comparison
- Lesser-Known Structures: CICs and Limited Partnerships
- Tax by Structure
- Common Challenges When Choosing a Structure
- Illustrative Examples
- Common Mistakes to Avoid
- Which Structure Is Right for You? Decision Framework
- What Does Each Structure Cost to Set Up?
- Choosing Your Structure: Checklist
- FAQs
What Are Business Structures?
A business structure is the legal form your business takes, which determines who’s liable for debts, how profit is taxed, and what you must report publicly. It’s the first decision every new business owner makes, usually before registering with HMRC or Companies House.
The structure you choose isn’t permanent — many businesses start as a sole trader and incorporate later as profits grow — but changing structure involves real admin, so it’s worth choosing with your next 2–3 years in mind rather than just your first month of trading.
The Main Types of Business Structures in the UK
The UK’s main business structures are sole trader, ordinary partnership, limited liability partnership (LLP), private limited company (Ltd), and public limited company (PLC) — each with a different balance of liability protection, privacy and administrative burden.
- Sole Trader: You and the business are legally the same entity. Simplest to set up, no Companies House registration, but unlimited personal liability.
- Partnership: Two or more people share ownership, profit and unlimited liability under a partnership agreement. No Companies House registration required.
- Limited Liability Partnership (LLP): Combines partnership flexibility with limited liability. Must register with Companies House and file annual accounts.
- Private Limited Company (Ltd): A separate legal entity from its owners. Shareholders’ liability is limited to what they’ve invested. Most common structure for growing businesses.
- Public Limited Company (PLC): Can offer shares to the public and list on a stock exchange, with higher regulatory requirements and a minimum share capital.
Side-by-Side Comparison
The clearest way to compare UK business structures is liability, privacy, tax and admin side by side — most guides explain each structure separately, which makes comparing them harder than it needs to be.
| Structure | Liability | Privacy | Registers With | Main Tax |
|---|---|---|---|---|
| Sole Trader | Unlimited | Fully private | HMRC only | Income Tax + Class 4 NI |
| Partnership | Unlimited, shared | Fully private | HMRC only | Income Tax + Class 4 NI (per partner) |
| LLP | Limited | Public accounts filed | Companies House + HMRC | Income Tax per member (LLP itself is tax-transparent) |
| Ltd (Private) | Limited | Public accounts filed | Companies House + HMRC | Corporation Tax (19%–25%) |
| PLC | Limited | Public accounts + higher disclosure | Companies House + HMRC | Corporation Tax (19%–25%) |
Lesser-Known Structures: CICs and Limited Partnerships
Beyond the five main structures, a Community Interest Company (CIC) is a limited company variant designed for businesses with a social or community purpose, with legal restrictions on how much profit can be distributed to owners. A limited partnership (LP), meanwhile, allows a mix of general partners (unlimited liability, active management) and limited partners (limited liability, passive investment only) — used far less often than LLPs.
- CIC: Registers with Companies House and the CIC Regulator; must pass a “community interest test” and file an annual community interest report alongside standard accounts.
- Limited Partnership (LP): Common in investment structures; limited partners cannot take part in day-to-day management without risking their limited liability status.
Tax by Structure
Sole traders and partnership members pay Income Tax and National Insurance on profits through Self Assessment; LLP members are taxed the same way despite the LLP’s limited liability; Ltd and PLC companies pay Corporation Tax on profits, with directors paying separate personal tax on salary and dividends. This is the single biggest reason profitable businesses eventually consider incorporating.
Common Challenges When Choosing a Structure
- Choosing Ltd purely for a “professional” image before profits justify the extra admin
- Underestimating how public a limited company’s information becomes once incorporated
- Partnerships formed without a written partnership agreement, causing disputes later
- Not realising LLP members are still taxed individually, despite the “limited liability” name
- Assuming structure choice is permanent and delaying a decision indefinitely
Illustrative Examples
Illustrative Example — Sole Trader: A freelance copywriter starts out as a sole trader for simplicity, keeping full privacy and no Companies House filings while profits are modest.
Illustrative Example — LLP: Three architects form an LLP so each is only liable up to their investment, while still being taxed individually on their share of profits through Self Assessment.
Illustrative Example — Ltd: A software consultancy incorporates as profits pass £40,000, trading unlimited personal liability protection and Corporation Tax rates for public accounts and more admin.
Common Mistakes to Avoid
| Mistake | Why It Happens | Consequence | How to Avoid It |
|---|---|---|---|
| Incorporating too early | Wanting to “look professional” from day one | Extra admin and cost with no matching tax benefit yet | Incorporate once profit level genuinely justifies it |
| No written partnership agreement | Assuming a verbal understanding is enough | Disputes over profit share or exit terms later | Draft a partnership agreement before trading |
| Confusing LLP with limited company tax | Assuming “limited liability” means Corporation Tax applies | Wrong tax planning assumptions | Remember LLP members pay Income Tax individually |
| Ignoring privacy implications | Not realising accounts become public | Competitors or clients see turnover and director details | Factor privacy into the structure decision upfront |
| Never revisiting the decision | Treating structure as a one-time choice | Missed tax efficiency as profits grow | Review your structure annually with your accountant |
Editor’s Insights
- The most common switch is sole trader to limited company — rarely the other way around.
- LLPs are most popular among professional services (accountants, solicitors, architects) rather than product-based businesses.
- A PLC is rarely the right starting structure — it’s typically a later-stage conversion once a business needs public share capital.
- CICs suit businesses genuinely built around a social mission, not businesses simply looking to appear more ethical.
- Your structure decision should factor in your next 2–3 years, not just your first month of trading.
Which Structure Is Right for You? Decision Framework
- Do you want the simplest, lowest-cost start? Sole trader (or partnership, if there’s more than one of you).
- Do you need your personal assets protected from business debt? Choose Ltd, LLP or PLC over sole trader/partnership.
- Do you value privacy over limited liability? Sole trader or partnership keeps your finances off the public register.
- Are you a professional services firm sharing ownership with colleagues? LLP is worth considering specifically for your sector.
- Does your business have a genuine social or community mission? A CIC may fit better than a standard Ltd.
What Does Each Structure Cost to Set Up?
Current, government-confirmed costs as of 2026:
Sole Trader / Partnership
Free
Register with HMRC only — no incorporation fee.
LLP / Ltd
£100
Standard digital incorporation via Companies House.
CIC
£115
Digital incorporation, plus CIC Regulator approval.
All limited structures also pay an ongoing £50 annual confirmation statement fee. For a full walkthrough of the registration process itself, see our business registration guide.
Choosing Your Structure: Checklist
- ☐ Estimate your expected profit for the next 2–3 years
- ☐ Decide how much personal liability risk you’re comfortable with
- ☐ Consider whether public disclosure of accounts matters to you
- ☐ Check whether your sector commonly uses LLP (professional services)
- ☐ Discuss the tax comparison (Income Tax vs Corporation Tax) with an accountant before deciding
- ☐ Revisit your choice annually as profit and circumstances change
Frequently Asked Questions
What are the main types of business structures in the UK?
The five main types are sole trader, partnership, limited liability partnership (LLP), private limited company (Ltd) and public limited company (PLC), plus the less common Community Interest Company (CIC) for social enterprises.
Which business structure offers the most protection?
Ltd, LLP and PLC all offer limited liability, meaning your personal assets are generally protected beyond what you’ve invested in the business.
Is a sole trader or limited company better for tax?
It depends on profit level — limited companies pay Corporation Tax (19%–25%) rather than Income Tax, which often becomes more efficient once profits comfortably exceed the personal allowance, but the right answer depends on your specific numbers.
What’s the difference between a partnership and an LLP?
An ordinary partnership has unlimited liability shared between partners; an LLP offers limited liability while still taxing members individually, and must register with Companies House.
Can I change my business structure later?
Yes — switching from sole trader to limited company is common as profits grow, though it involves formal incorporation and closing out your sole trader affairs with HMRC.
What is a Community Interest Company (CIC)?
A CIC is a limited company structure for businesses with a social or community purpose, subject to a “community interest test” and restrictions on profit distribution.
Do all business structures need to register with Companies House?
No — only LLPs, Ltds, PLCs and CICs register with Companies House. Sole traders and ordinary partnerships register with HMRC only.
Sources & References
- GOV.UK / Companies House — official business structure definitions and fee changes 2026
- Small Business Commissioner — guide to UK business structure types
- GOV.UK — Corporation Tax rates and thresholds
- GOV.UK — Community Interest Companies (CIC) Regulator guidance
About the Author
Written and reviewed by the Epiclectic Editorial Team. Epiclectic is an independent UK publication owned by Eternity Accountants Limited, publishing practical, fact-checked guides across accounting, business, home & living, gardening, travel, sustainability and wellness.
Editorial standards: original research, fact-checking against official sources, and regular review.
Last reviewed: September 2026
Related Guides
- How to Register a Business in the UK: 2026 Step-by-Step Guide
- Small Business Tax UK: The Complete 2026/27 Guide
- Starting a Small Business in the UK
- How to Find an Accountant: Expert UK Guide 2026
- Explore more Business guides
In Summary
There’s no single “best” business structure — only the one that fits your liability tolerance, tax position, and appetite for admin right now. Most UK businesses start simple, as a sole trader or partnership, and incorporate later once profit and risk justify the change. What matters most is understanding the trade-off you’re making, not just the label on the structure.
If you’re ready to register, our step-by-step business registration guide walks through exactly how — or browse more Business guides on Epiclectic.
