The Incorporation Question: When Going Limited Serves Your Business — and When It Doesn't

Ask around any small business network and you will hear it repeated like received wisdom: you should go limited, you'll save on tax. There is a kernel of truth in it. But in our experience, incorporation is neither a windfall nor a trap — it is a trade-off, and whether it suits you depends on profits, plans, and temperament.

The Case For

Tax planning flexibility. A limited company pays Corporation Tax on its profits, currently at 19% for profits up to £50,000 and 25% above the upper threshold. As a sole trader, your profits are taxed at income tax rates reaching 40% and 45%, plus Class 4 National Insurance. For a business generating meaningful profits beyond what the owner needs to live on, the company can retain those profits at a lower rate and extract them later, perhaps in a lower-tax year or via pension contributions.

Dividend and salary planning. Owner-directors commonly take a modest salary up to the National Insurance threshold, then top up with dividends, which carry no National Insurance and benefit from a small annual allowance. This combination, executed properly, is frequently more efficient than a sole trader's straightforward income tax bill.

Limited liability. The company's debts are, in principle, the company's own. In practice, most high street banks will require a personal guarantee from a young company, so the protection is softer than advertised — but for businesses with real exposure, it remains a genuine consideration.

Credibility and continuity. Some larger clients and tender processes prefer dealing with a limited company. And the structure persists beyond any individual, which matters if you plan to sell or bring in partners.

The Case Against

The admin burden is real. A company must file annual accounts with Companies House, a Corporation Tax return with HMRC, a Confirmation Statement, and maintain statutory registers. Directors' self assessments continue. Payroll must be run if a salary is taken. For a sole trader used to a single tax return each January, this is a step change in paperwork — and accountancy fees rise accordingly.

Extraction is not free. Profits inside the company belong to the company. Getting money out means dividends (taxed at up to 39.35%), salary (with employer's NI), or pension contributions. If you withdraw nearly everything you earn, much of the headline Corporation Tax advantage evaporates.

The loss of Incorporation Relief can bite. If you transfer your sole trader business to a company and later sell the shares, you may face a double tax charge — once on the transfer at incorporation, again on the eventual sale — unless Incorporation Relief under s162 applies or the transfer qualifies for the more recent rules on incorporation of a business with no goodwill. This is a technical area, and getting it wrong can be expensive.

Lower profits may gain nothing. If your business earns close to the personal allowance and basic rate thresholds, the savings from incorporation are typically wiped out by extra compliance costs and the loss of the trading allowance.

The Honest Question

So when is incorporation simply not worth it? Our view is candid:

• If you extract most of your profit to live on, and profits sit below roughly £30,000–£40,000, the tax advantage is marginal at best after fees.
• If you value simplicity and the idea of Companies House filings fills you with dread, stay as you are. A structure you resent maintaining is a poor investment.
• If you plan to sell within a few years, take advice on Incorporation Relief before, not after, the transfer.

Conversely, incorporation tends to earn its keep when profits are substantial and growing, when you want to retain earnings in the business, when you are taking on riskier contracts, or when you are building something with a view to eventual sale.

Our Verdict

Do not incorporate because everyone else has. Do it when the numbers, your plans, and your appetite for administration all point the same way. Run both scenarios with real figures — projected profits, intended drawings, likely fees — and let the arithmetic decide. If you would like a second opinion on your own numbers, a short conversation is usually all it takes to see clearly which side of the ledger you sit on.