Sole trader or limited company — which should you be?

This is probably the most-Googled question in British self-employment, and most of the answers are written by accountants trying to get you to ring them.

Here's the plain version. It won't replace your accountant — and you should talk to one before deciding — but you'll walk into that conversation knowing what you're being asked.

What actually differs

As a sole trader, you and the business are the same thing. Your income is your income. You fill in a Self Assessment once a year. If the business owes money, you owe money.

A limited company is a separate legal person. It earns the money, it owes the debts, it files its own accounts. You're a director and usually a shareholder, and you take money out as a mix of salary and dividends.

That's the whole difference. Everything else follows from it.

The three things that actually decide it

1. Liability — what happens if it goes wrong

This is the one people underweight.

As a sole trader there's no line between the business and you. If something goes badly wrong and you're not covered, your own money is on the table.

A limited company puts a wall there. It's not an impenetrable one — banks often want personal guarantees, and directors can still be liable for their own negligence — but it's a real wall and it's the main reason a lot of trades incorporate.

The bigger the jobs, the more this matters. Fitting kitchens is a different risk to roofing a commercial unit.

2. Tax — but not the way people think

Yes, a limited company can be more tax-efficient once profits get past a certain level, mainly because of how dividends are taken.

Two things people miss:

There's a crossover point, and it moves. The rates change, the thresholds change, and where it becomes worthwhile is a moving target. Anyone who tells you a fixed number is quoting last year's rules.

The saving has costs against it. Company accounts, Corporation Tax returns, a Confirmation Statement, probably more from your accountant. If the tax saving is a few hundred pounds and the extra admin costs you most of that, you've bought yourself paperwork.

This is exactly the bit to take to an accountant with your actual numbers, not a blog.

3. Who your customers are

Some customers care.

Householders almost never do. But some commercial clients, main contractors and public-sector buyers will only deal with limited companies, or ask for company details as a matter of course.

If the work you want is commercial, that can settle it on its own.

What being limited actually involves

Worth knowing before you decide, because this is the part that surprises people:

• Annual accounts filed at Companies House
• A Corporation Tax return
• A Confirmation Statement each year
• Your name, and the company's registered address, on the public record
• A separate business bank account
• Payroll if you take a salary
• Money in the company isn't yours to spend — it comes out properly, or you create a problem

None of it is hard. All of it is more than a Self Assessment.

That last point catches people out most. As a sole trader, money in the account is your money. As a director, it belongs to the company until it's taken out correctly.

A rough rule

Not advice, just the shape of it:

Starting out, working for householders, modest profits — sole trader is usually simpler and cheaper, and you can change later.

Profits growing, taking on bigger or commercial work, employing people, or carrying real risk — limited starts making sense on liability alone, before tax comes into it.

Somewhere in between — this is precisely the conversation to have with an accountant, once, with your real figures in front of you.

You're not stuck

Plenty of people start as sole traders and incorporate later. That's normal, not a failure of planning, and it's usually the right order — you learn what the business actually is before you decide what shape it needs.

Going the other way is possible too, just more faff.

Before you go

This is general information, not tax or legal advice. The rates and thresholds move every year, and the right answer depends on numbers I don't have. An hour with an accountant costs less than getting this wrong for three years.

What you should take from it: it's not only a tax question. Liability and who your customers are matter just as much, and those parts don't change every Budget.

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While you're thinking about the money side, our day rate calculator works out what you need to charge to hit a given income — useful either way, and free.