“Sole trader or limited company?” — every self-employed person asks it eventually, usually late at night before something important starts. Here’s the honest version of the answer.
What each one actually is
Sole trader means you are the business. You register for Self Assessment, keep records of income and costs, and pay Income Tax and National Insurance on your profits. Simple, low-admin, does what it says on the tin.
Limited company means the business is a separate legal thing that you own and run. The company earns the money, pays Corporation Tax on its profits, and you take money out — typically as a small salary plus dividends. More moving parts, more filing, more rules; and at higher income levels, sometimes a more tax-efficient overall result.
The four differences that actually matter
1. Tax
At modest profits, the difference is often small — sometimes in the sole trader’s favour once you count the extra accountancy cost of a company. As profits climb, the salary-and-dividends route through a company can become more efficient. Whether it does depends on your income, your other income, your plans, and current tax rates — there is no single correct structure, and no threshold borrowed from a forum thread will do this calculation for you.
2. Admin
A sole trader files one tax return a year. A company files statutory accounts, a Corporation Tax return and a confirmation statement, runs payroll for the director, and the director usually files a personal return too. It’s all entirely manageable — it’s what accountants are for — but it’s real, and it’s why company accounting costs more.
3. Risk
A sole trader’s business debts are personal debts. A limited company puts a legal wall between the business’s liabilities and your house — “limited liability” is the clue in the name. The wall has limits (it won’t protect against personal guarantees or wrongdoing), but for work with meaningful commercial risk, it matters.
4. Image and access
Some clients and agencies — especially in contracting and consulting — prefer or require a limited company. For a plumber or a personal trainer, customers rarely mind either way. Your market decides how much weight this carries.
Our honest take
Start from what you’re trying to do, not from the structure. A tradesperson building steady local work and a consultant signing a six-month outside-IR35 contract can both be “self-employed” and still have completely different right answers.
Our team’s background spans consulting and contracting, so we’ve lived this question from both sides of the desk — and we’re happy to work through it with your actual numbers, no jargon, no pressure, and no agenda either way.
This guide is general information, not advice for your specific circumstances. Tax rules change, and how they apply depends on your situation — if you'd like to talk yours through, we're happy to help.
Quick answers
At what income does a limited company become worth it?
There’s no magic number, despite what the internet says. The tax comparison shifts with rates and your circumstances, and tax is only one factor alongside admin, risk and your plans. It’s a calculation worth doing properly with your own figures rather than a threshold borrowed from a forum.
Can I switch from sole trader to limited company later?
Yes — plenty of people start as sole traders and incorporate once the numbers or the clients justify it. Starting simple and switching later is often a perfectly good strategy.
Do agencies and clients care which one I am?
In contracting, often yes — many agencies and end clients prefer or require a limited company for outside-IR35 engagements. For local trades and services, customers rarely mind either way.