The benefits of a limited company for the 2026/27 tax year

For practitioners advising clients on business structures in the 2026/27 financial year, the decision to incorporate requires a precise calculation of legal protections against updated tax burdens. The legislative changes introduced by the Finance Acts of 2025 and 2026 have shifted the fiscal math, but the core structural advantages of incorporation remain intact.

When evaluating the benefits of a limited company, you must assess the client’s risk profile, their profit extraction strategy under the new dividend rates, and their eligibility for the 19% small profits rate.

Separate Legal Personality and Limited Liability

The most fundamental benefit of a limited company lies in its legal separation from its owners.

Separate Legal Personality

The Supreme Court recently reaffirmed this foundational principle in its 2025 decision, Royal Bank of Canada v HMRC. The Court re-stated the long-standing rule from Salomon v A Salomon & Co Ltd, confirming that an incorporated company has a separate legal personality from its shareholders.

“[O]nce the company is legally incorporated it must be treated like any other independent person with its rights and liabilities appropriate to itself… a company’s income and assets are not treated as ‘really’ being those of its shareholder”.

Limited Liability

This separate personality facilitates limited liability. Under section 3(1) of the Companies Act 2006, a company is a “limited company” if its constitution limits the liability of its members.  Section 3(2) confirms that a company limited by shares restricts the shareholders’ liability strictly to the amount, if any, unpaid on the shares they hold.  Consequently, if the company fails, creditors cannot pursue the directors’ or shareholders’ personal assets to satisfy the corporate debt.

Corporation Tax Tiers (19% vs 25%)

For the 2026/27 financial year, a limited company allows trading profits to be sheltered at lower corporate tax rates compared to the higher rates of personal Income Tax applied to sole traders.

Section 13 of the Finance Act 2025 sets the main rate of Corporation Tax at 25% for the financial year 2026.  However, section 279E of the Corporation Tax Act 2010 applies a highly beneficial tiered system for smaller enterprises:

• Small Profits Rate (19%): If the company generates augmented profits below the £50,000 lower limit, it pays a flat 19% Corporation Tax.
• Marginal Relief: If profits fall between the £50,000 lower limit and the £250,000 upper limit, you apply the 25% rate but deduct marginal relief, creating a gradual effective rate.
• Main Rate (25%): Only profits strictly exceeding the £250,000 upper limit suffer the full 25% rate.

Arithmetic Application: If your client’s company generates £40,000 in taxable profit, the entire amount is taxed at 19% (generating a £7,600 liability). A sole trader generating the same profit would face 20% Income Tax plus Class 4 National Insurance Contributions on the bulk of those earnings.

Flexible Profit Extraction (The 2026 Dividend Rates)

Operating as a limited company provides the directors with the flexibility to dictate exactly when and how they extract profits, allowing for aggressive tax planning. Directors typically extract a small, tax-efficient salary up to the National Insurance threshold, taking the remainder as dividends.

Section 4 of the Finance Act 2026 increased the tax rates on dividend income for the 2026-27 tax year.  If the company distributes profits, the shareholders face the following rates (after utilising the tax-free dividend allowance):

• Dividend Ordinary Rate: Increased to 10.75%.
• Dividend Upper Rate: Increased to 35.75%.
• Dividend Additional Rate: Maintained at 39.35%.

Despite these increases designed to narrow the gap between taxes on work and taxes on assets, extracting dividends free from National Insurance Contributions often remains more tax-efficient than generating self-employed trading income.

Summary Table: Limited Company Elements 2026/27

For completeness, practitioners should model the client’s projected profit levels to ensure the administrative costs of running a limited company (such as preparing statutory accounts and iXBRL tax returns) do not outweigh the Corporation Tax savings achieved by accessing the 19% small profits rate.