Sole trader or limited company? It's one of the biggest decisions a UK business makes, and the right answer depends on profit, risk and how much admin you can stomach. Here's the honest comparison.

Sole trader — simple, personal

As a sole trader, you and the business are the same legal person.

  • Tax: you pay Income Tax and National Insurance on your profits through Self Assessment.
  • Admin: minimal — no Companies House filings, just your tax return and records.
  • Liability: unlimited — your personal assets are on the line if the business owes money.
  • Privacy: your details aren't published on a public register.

It's the easiest way to start, and for many small or lower-profit businesses it stays the sensible choice.

Limited company — more structure, potential tax efficiency

A limited company is a separate legal entity that you own and (usually) direct.

  • Tax: the company pays Corporation Tax on its profits; you take money out as a mix of salary and dividends, which can be more tax-efficient at higher profit levels.
  • Admin: more — annual accounts and a Corporation Tax return, Companies House filings, and running payroll if you take a salary.
  • Liability: limited — generally your personal assets are protected (barring personal guarantees or wrongdoing).
  • Credibility: some clients and lenders prefer dealing with a limited company.

So which is better?

There's no universal answer, but as a rough guide:

  • Lower profits / just starting / want simplicity → sole trader often wins.
  • Higher, stable profits / want limited liability / plan to reinvest → a limited company often becomes more efficient.

The crossover point depends on your numbers, so it's worth modelling both with an accountant rather than guessing.

Don't forget Making Tax Digital

The structure also affects your digital obligations. MTD for Income Tax is arriving for sole traders and landlords by income band from April 2026; limited companies file differently (Corporation Tax, with MTD for CT still further out). Either way, keeping digital records now means whichever route you pick, you're ready — see MTD for Income Tax.

Books that work either way

BookEnu handles both sole traders and limited companies — with UK GAAP starter charts for each, reports tailored to the structure, and MTD-ready digital records throughout. So if a client incorporates later, the books come along for the ride. Apply for early access to try it on real clients.

General information, not tax or legal advice. The right structure depends on individual circumstances — take advice before deciding.