Choose a business structure
Your business structure is the most important early decision: it determines how you are liable, how you are taxed, how much admin you take on and how you come across to banks and customers. This guide compares the main UK structures and helps you decide.
Which legal structure suits you?
Three questions – one direction. Not a substitute for legal advice.
1 · Do you want to limit your personal liability?
2 · How much capital can you put in?
3 · Are you planning to bring in investors?
Answer all three questions to see your recommendation.
The most common business structures
Sole trader: you run the business as an individual, register with HMRC for Self Assessment and pay Income Tax and National Insurance on your profits – but you are personally liable for all business debts. Partnership: two or more people share profits and liability; each partner is personally liable. Limited liability partnership (LLP): a partnership registered with Companies House in which the members’ liability is limited.
Private limited company (Ltd): a separate legal entity owned by shareholders and run by directors. It pays Corporation Tax on its profits, and your liability is generally limited to the value of your shares. A public limited company (PLC) is only relevant if you want to offer shares to the public.
The four decisive questions
How high is your risk? With customer contracts, staff or stock, limited liability protects your private assets. How high will your profits be? As profits grow, a limited company can be more tax-efficient. Are you starting alone or with others? Do you need investors? Investors almost always expect a limited company, because shares can be issued and transferred.
Rule of thumb – and the planix finder
Low risk, testing an idea → sole trader. Starting with a partner on a small scale → partnership; professional partners who want limited liability → LLP. Liability protection, investors or growth plans → private limited company. Use the finder on this page or let planix recommend the structure that suits your situation based on a few questions.
Frequently asked questions
Which structure suits me – sole trader or limited company?
As a sole trader you start quickly and with little admin, but you are personally liable. A limited company protects your private assets and can be more tax-efficient at higher profits, but it brings more obligations: annual accounts, a confirmation statement and a Corporation Tax return.
Can I change my business structure later?
Yes. Many founders start as a sole trader and incorporate a limited company once the business grows. The switch means a new legal entity, new registrations and transferring contracts – plan it with an accountant.
Which structure gives me the least personal liability?
A private limited company or an LLP. Your liability is then generally limited to your investment. Banks often still ask directors of young companies for a personal guarantee, and directors can be personally liable for wrongful trading.
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