"You should go limited" is the most freely given — and least examined — advice in construction. Sometimes it's right. Often, for a one-person band, it isn't. Here's the honest comparison.

Sole trader: the case for

  • Minimal admin — one tax return (or MTD updates), no Companies House filings, no separate company accounts.
  • Every pound of profit is simply yours (taxed through Income Tax and NI).
  • CIS is simpler — deductions offset directly against your own tax, refunds through your return.
  • Cheaper accountancy, often by several hundred pounds a year.

Limited company: the case for

  • Limited liability — business debts generally aren't your personal debts (though lenders often want personal guarantees anyway).
  • Potential tax efficiency at higher profits, via salary + dividends — the gap has narrowed considerably in recent years.
  • Some main contractors and clients simply prefer dealing with companies.

The costs people forget

A company means statutory accounts, a Corporation Tax return, confirmation statements, payroll if you take a salary, dividend paperwork, and typically £1,000+ a year in accountancy. Under CIS, company deductions offset against PAYE in-year — more moving parts, not fewer. The tax saving has to beat all of that before it's a real saving.

A reasonable rule of thumb

At modest profits, simplicity usually wins and sole trader is hard to beat. As profits climb well into higher-rate territory — sustained, not one good year — the company conversation becomes worth having with an accountant who can model your actual numbers. Liability exposure and client requirements can tip it either way regardless of tax.

Note: SubReady is built for sole traders and the self-employed; it isn't designed for limited company accounting. This article is general information, not advice — model real numbers with an accountant before switching.

This article is general information for UK sole traders and subcontractors, not tax, accounting or financial advice. Rules change — check current HMRC guidance or speak to an accountant about your own position.