Sole Trader vs Limited Company UK 2026/27: Tax, Liability & Which Is Better?

Quick answer: there is no universal profit level at which every UK sole trader should become a limited company. A sole trader is usually simpler to start and administer, but the individual and the business are legally the same person. A limited company is a separate legal entity, can provide limited-liability protection and gives more flexibility over how profits are retained or extracted, but it brings Corporation Tax, Companies House, payroll, dividend and accounting responsibilities.

Tax is important, but it should not be reduced to an outdated rule such as “go limited once profit reaches £30,000”. In 2026/27 the comparison is affected by Income Tax, Class 4 National Insurance, Corporation Tax, employer and employee National Insurance, dividend tax, the owner’s other income, available allowances, pension strategy, associated companies and whether profits need to be withdrawn immediately.

The right question is therefore not simply “which structure pays less tax?” It is: which legal and tax structure best fits the business risk, expected profits, cash requirements, customers, ownership plans and compliance burden?

Sole trader vs limited company: key differences

A new business should consider these differences before focusing on headline tax rates. A one-person consultancy with low financial risk has different priorities from a construction contractor, ecommerce importer, technology business seeking investors or company employing staff.

How a sole trader is taxed in 2026/27

A sole trader is self-employed. There is no Corporation Tax layer between the owner and the business: the taxable trading profit is generally part of the individual’s taxable income.

If gross self-employment income exceeds £1,000 in a tax year, registration for Self Assessment will normally be required, subject to the detailed HMRC rules and exceptions. See HMRC’s sole-trader registration guidance.

For 2026/27 the standard Personal Allowance is £12,570. For taxpayers in England, Wales and Northern Ireland, taxable non-savings income generally enters the 20%, 40% and 45% Income Tax bands. Scottish taxpayers have different earned-income bands and rates, so a UK-wide comparison must not assume the English rates apply everywhere. See current Income Tax rates and allowances.

Self-employed Class 4 National Insurance for 2026/27 is generally:

• 6% on relevant profits above £12,570 up to £50,270; and
• 2% on relevant profits above £50,270.

The National Insurance position has changed materially from older guides that still quote a 9% Class 4 rate. HMRC’s current rates are available in its National Insurance guidance.

A sole trader pays tax on profit, not drawings

This distinction is fundamental. If a sole trader makes £70,000 of taxable business profit but only transfers £35,000 from the business bank account to a personal account, the other £35,000 is not automatically sheltered from personal tax merely because it stayed in the business account. The taxable figure is based on business profit under the applicable accounting and tax rules, not simply the cash withdrawn.

That is different from a company, where profits legally belong to the company until they are paid or otherwise transferred to the owner through a lawful mechanism.

Britvex’s Self Assessment service covers self-employment reporting, expenses and the wider personal tax position. Our updated guide to freelancing in the UK also explains the practical tax and record-keeping position for independent workers.

How a limited company and its owner are taxed

A limited company is a separate taxpayer. Its trading profit does not automatically become the director’s personal income simply because that director owns all the shares.

For the financial year beginning 1 April 2026, the main Corporation Tax framework remains:

The £50,000 and £250,000 limits can be reduced for short accounting periods and where there are associated companies. See HMRC’s Corporation Tax rates. Britvex also maintains a detailed Corporation Tax guide.

Salary

A director may receive a salary through PAYE. The salary can be an allowable company expense where the normal tax conditions are met, but it can also create Income Tax, employee National Insurance and employer National Insurance consequences.

The general employer Class 1 National Insurance rate above the applicable secondary threshold is 15% in 2026/27. Salary planning therefore needs to consider more than the director’s Personal Allowance. Whether the company qualifies for Employment Allowance, whether there are other employees and the director’s wider circumstances can materially alter the result.

Dividends

Dividends are paid from legally distributable company profits after Corporation Tax. A director-shareholder cannot simply label any withdrawal a dividend: the company needs sufficient distributable reserves and appropriate records.

The dividend allowance for 2026/27 is £500. Dividend income above available allowances is generally taxed at:

• 10.75% in the basic dividend rate band;
• 35.75% in the higher dividend rate band; and
• 39.35% in the additional dividend rate band.

These are the 2026/27 rates, so comparisons using the previous 8.75% basic dividend rate are no longer current. See HMRC’s dividend tax guidance.

Retained profits

A company can retain post-Corporation-Tax profits for working capital, equipment, recruitment, expansion or future distribution. This can provide useful timing flexibility because the shareholder does not necessarily incur dividend tax on every pound of company profit in the year the company earns it.

However, retaining money does not make the underlying company profit tax-free. Corporation Tax still applies, and later extraction can create personal tax.

Is a limited company more tax-efficient?

Sometimes — but not automatically. There is no statutory £30,000, £40,000 or £50,000 point at which a sole trader must become a limited company, and there is no reliable universal “break-even” figure.

A proper comparison needs to start with the same commercial profit and then model both structures using the owner’s actual circumstances.

This is why a comparison that simply places a sole trader’s Income Tax percentage beside the company’s 19% Corporation Tax rate is incomplete. A shareholder who wants to spend the company’s profit personally may still need to extract it, potentially adding salary or dividend taxes after Corporation Tax.

Conversely, a profitable owner who does not need to withdraw all earnings immediately may value the company’s ability to retain capital for future growth.

Practical rule: calculate both structures using the same expected revenue, genuine expenses, owner cash requirement and tax year. Then compare the total business and personal position rather than one isolated tax rate.

Personal liability and business risk

The legal distinction can matter more than the tax saving.

A sole trader normally contracts personally. If the business cannot meet a valid debt or claim, the individual can be personally responsible. Insurance can reduce particular risks, but it does not create a separate legal entity.

A limited company normally enters contracts and owns its business assets in its own name. Shareholder liability is generally limited to the amount invested or unpaid on shares.

But limited liability is not absolute immunity. Personal exposure can still arise, for example where an individual gives a personal guarantee, commits fraud, breaches particular director duties or becomes personally liable under another legal rule. Company status should therefore be viewed as a legal structure, not as permission to ignore risk management.

For businesses with employees, significant borrowing, leased premises, construction exposure, valuable customer contracts, stock, import liabilities or professional risk, legal separation can be a major consideration even where the pure tax difference is small.

Administration, filing and Companies House

Sole trader administration

A sole trader normally needs adequate business records and Self Assessment compliance. From 2026, some sole traders also fall within Making Tax Digital for Income Tax, which can materially increase digital record and reporting requirements.

There is no Companies House annual account or confirmation statement merely because a person is a sole trader.

Limited company administration

A company director has legal responsibilities that exist even when an accountant handles the practical filing work. These include maintaining appropriate records and ensuring required filings are completed.

A normal trading company may need to deal with:

• statutory annual accounts;
• a Corporation Tax computation and Company Tax Return;
• Corporation Tax payment deadlines;
• Companies House accounts filing;
• at least one confirmation statement every 12 months;
• director, shareholder and PSC information;
• PAYE payroll where applicable;
• dividend records and supporting company documentation;
• VAT filings where registered; and
• changes to registered office, officers, shares or other statutory information.

Companies House’s current online incorporation fee is £100, while an online confirmation statement currently costs £50. These statutory fees can change, so they should not be hard-coded into a long-term business budget without checking the current Companies House fee schedule.

Britvex’s guide to Limited Company Accounts and filing deadlines explains the accounting timetable in more detail.

Identity verification is now part of company compliance

Companies House identity verification became a legal requirement from 18 November 2025, with requirements phased according to the person’s role and relevant filing dates.

New directors need to provide their Companies House personal code as part of incorporation or appointment. Existing directors provide their code through the applicable confirmation-statement process, while PSCs have separate requirements and timing.

Britvex is a Companies House-approved Authorised Corporate Service Provider and can support eligible identity-verification cases through its ACSP identity-verification process. Official requirements remain governed by Companies House guidance.

Making Tax Digital and digital records

This is now one of the most important differences between old sole-trader guides and the 2026 position.

Making Tax Digital for Income Tax began from 6 April 2026 for qualifying sole traders and landlords whose relevant qualifying income exceeded £50,000 under HMRC’s rules.

The planned threshold then extends to:

• qualifying income over £30,000 from April 2027; and
• qualifying income over £20,000 from April 2028 under the currently announced timetable.

Qualifying income is broadly based on gross income from self-employment and property before expenses, not business profit. Someone near the threshold therefore should not assume that £45,000 of profit means they are safely below a £50,000 test.

MTD taxpayers need compatible software, digital records and quarterly updates, followed by the required year-end tax return process. See HMRC’s MTD eligibility guidance.

A limited company does not fall into MTD for Income Tax merely because it operates a business. It has its own Corporation Tax and company filing regime. However, a company director could separately have personal property or self-employment income that brings the individual into MTD.

VAT: does business structure change the threshold?

Choosing a limited company does not by itself create a higher VAT threshold, and remaining a sole trader does not avoid VAT.

The compulsory VAT registration threshold is currently £90,000 of taxable turnover. Registration can be required if taxable turnover for the previous 12 months goes over the threshold or if the business expects to exceed it within the relevant forward-looking period.

A business can also choose voluntary VAT registration below the threshold where appropriate. See HMRC’s VAT registration guidance.

When an existing sole trader incorporates, any existing VAT registration needs to be reviewed carefully because the legal entity operating the business has changed. Do not simply continue using old business details without considering whether a transfer or new registration procedure is required.

Clients, contracts, investment and IR35

The decision is not only tax-driven.

Customers and procurement

Some larger customers, agencies, suppliers and procurement departments prefer contracting with companies. Others are completely comfortable dealing with established sole traders. Do not incorporate purely for “credibility” without checking what your actual target customers require.

Investment and ownership

A company can issue and transfer shares, making it structurally easier to introduce another shareholder or external investor. A sole trader cannot sell shares in the business because no separate company exists.

Retaining value in the business

Where profits are being reinvested into staff, inventory, technology or expansion, a company may offer useful separation between personal spending and retained business capital.

IR35 and employment status

Contractors should not assume that incorporation automatically converts employment-like work into genuine independent business activity. If an individual supplies personal services through an intermediary company, the off-payroll working/IR35 framework can become relevant depending on the engagement.

Likewise, calling someone a sole trader does not automatically determine their employment status. The actual working relationship matters.

Switching from sole trader to limited company

You can move from sole trader status to a limited company, but it is not simply a matter of changing the name on invoices.

The new company is a separate legal person. A controlled transition can involve:

1. incorporating the company with the correct shareholders, directors and SIC codes;
2. completing required Companies House identity verification;
3. deciding the date on which the sole trade will cease and the company will begin trading;
4. opening and using the company’s own bank account;
5. moving contracts, customer arrangements and supplier accounts where appropriate;
6. reviewing ownership and transfer of equipment, stock, vehicles, intellectual property and goodwill;
7. reviewing VAT registration and whether a transfer process is needed;
8. registering the company for Corporation Tax after it starts business activity;
9. establishing PAYE where salary will be paid;
10. closing or adjusting the old sole-trader bookkeeping records;
11. preparing the individual’s final sole-trade accounts and Self Assessment reporting; and
12. changing invoices, insurance and statutory business information to the company details.

Transfers of business assets or goodwill can have tax consequences. Depending on the facts, specific reliefs may be relevant, but they should not be assumed to apply automatically.

For someone ready to incorporate, Britvex’s complete UK limited-company setup guide explains the process. A company formation application can also begin directly through the Britvex company-formation portal.

Decision checklist: which structure fits you?

Before deciding, answer these questions using real numbers rather than a generic profit threshold:

1. What turnover and taxable profit do you realistically expect over the next 12–24 months?
2. How much of the profit must you withdraw personally to live on?
3. Do you have employment, rental, dividend or other personal income?
4. Are you exposed to debts, claims, employees, leases or significant contractual risk?
5. Do important customers require you to operate through a company?
6. Will you need another shareholder or outside investment?
7. Do you intend to retain substantial profits inside the business?
8. Will pension contributions form part of the remuneration strategy?
9. Are you already within Making Tax Digital for Income Tax?
10. Are you approaching the VAT threshold?
11. Could IR35 or another employment-status rule affect your work?
12. Are you willing to maintain company accounts, payroll and Companies House compliance?
13. What would both structures cost after tax, NI, accounting fees and statutory fees?

A good decision should still look sensible if tax rates move slightly. If the only reason for incorporating is a small calculated tax difference, the additional administration and loss of flexibility may outweigh it. If liability protection, retained profits, investors or contractual requirements matter, the company structure can be compelling even before tax produces a large saving.

When to involve Britvex

Britvex can compare both structures using the actual expected turnover, expenses, owner withdrawals, other income and commercial requirements rather than applying a generic “incorporate at £30,000” rule.

Where a limited company is appropriate, Britvex can coordinate UK company formation, Companies House requirements, accounting setup, Corporation Tax, payroll and ongoing compliance. Where remaining self-employed is more appropriate, the business can continue with proper bookkeeping, Self Assessment and MTD preparation.

Existing company owners can review their position through Britvex’s Corporation Tax service. Sole traders can use our Self Assessment service. Documents and supporting information can be shared through the secure Britvex Client Portal.

Official sources and further reading

• GOV.UK — Register as a sole trader
• GOV.UK — Income Tax rates and Personal Allowances
• GOV.UK — National Insurance rates
• GOV.UK — Corporation Tax rates
• GOV.UK — Tax on dividends
• GOV.UK — Running a limited company
• Companies House — Identity verification requirements
• HMRC — Making Tax Digital for Income Tax
• HMRC — VAT registration
• Companies House — Current fees