When should you incorporate?

1. Compare the cash results

There is no profit threshold above which a company always gives more personal cash. The result depends on salary, dividends, other income, pension contributions and Employment Allowance eligibility. When all profit is withdrawn, higher profit can favour a sole trade even where a company won at a lower figure.

The Owner-Manager Tax Index compares whole-pound profits from £20,000 to £300,000. On its 2026/27 full-withdrawal baseline, with no other income, pension or Employment Allowance, a company gives more cash only from £60,142 to £60,506. Its largest advantage is £15.33 at £60,249, before extra running costs. At £250,000, the sole-trader cash result is £145,040.40 and the company result is £129,065.96. Different assumptions need a fresh comparison.

Our sole trader vs limited company analysis for 2026/27 compares current personal cash across profit levels and reports money left in the company separately, with the assumptions and figures available to download.

2. The Drawings Question

A sole trader pays Income Tax and Class 4 National Insurance on taxable trading profit, whether the cash is drawn or left in the business. A company pays Corporation Tax on taxable profit after allowable costs, which can include salary, employer National Insurance and qualifying pension contributions. Dividends come from post-tax distributable reserves.

For example, take £80,000 company profit before owner pay, a £12,570 salary, no Employment Allowance, no pension, no associated companies and a full twelve-month period. Employer National Insurance is £1,135.50 and Corporation Tax is £13,818.04. If salary and dividends total £50,000 before personal tax, the dividend is £37,430 and £15,046.46 remains in the company. With no other income or student loan, personal cash is £46,030.03. The retained amount belongs to the company and may be taxed when withdrawn.

3. Non-Tax Factors

Tax is not always the right reason to incorporate. Limited liability separates personal assets from business obligations (with genuine carve-outs, personal guarantees, wrongful trading, directors' duties). Corporate credibility matters in some sectors where clients will not contract with a sole trader. Pension planning, in particular the employer contribution route, is materially more flexible inside a company.

On the other side: a company brings public filing (accounts on the Companies House register), extra compliance, and less flexibility on using losses. The decision is multi-factorial. A 90-minute call covers the tax arithmetic, the structural considerations and the administrative cost on balance.

4. Goodwill and Capital Allowances

Transferring a trade requires a review of goodwill, other chargeable assets, stock, plant, liabilities and the consideration received. Connected-party valuation rules can apply. Business Asset Disposal Relief is generally restricted on goodwill transferred to a related close company; a sale to your own company does not automatically qualify. Any relief on other assets must be checked separately.

Incorporation Relief under section 162 of the Taxation of Chargeable Gains Act 1992 can defer gains into the shares received when a business transfers as a going concern with all its assets, except cash if retained. Relief applies to the qualifying share consideration; cash or a balance credited to a director loan account can leave part of the gain taxable immediately. The transfer agreement and valuations should be settled before completion.

5. Choosing the Date

Choose the transfer date around the actual cessation of the sole trade, company commencement, contracts, records and tax consequences. A 6 April transfer can make the tax-year records easier to follow; a mid-year transfer may suit the business better. Neither date is automatically more tax-efficient.

The default first accounting reference date is the last day of the incorporation month in the following year. Statutory accounts can therefore cover more than twelve months. A Corporation Tax accounting period cannot exceed twelve months, so two Company Tax Returns may be needed for the first accounts. Check the actual trading start, period ends and filing deadlines.

6. The First 30 Days

Arrange company formation and identity verification, a business bank account, any required PAYE scheme, insurance and contract transfers. Check Corporation Tax registration and tell HMRC within three months of starting business activity where required. Deal with the sole trade cessation return and VAT registration or number transfer, including the transfer-of-going-concern conditions where relevant.

Agree who is responsible for each registration and return before the business transfers. Bank, identity and tax-registration checks have their own processing times. Reconcile stock, debtors, creditors and opening balances to the transfer records so the first company accounts follow what actually happened.