Sole Trader vs Limited Company: Which Is Right? (2026)

Choosing between sole trader and limited company is one of the most common questions for self-employed people in the UK — and one of the most misunderstood. The short answer: most freelancers and sole traders are better off staying as sole traders until their profits consistently exceed £40,000–£50,000. Here is why, and when that changes.

Sole trader vs limited company: key differences at a glance

	Sole Trader	Limited Company
Setup	Register with HMRC	Incorporate at Companies House
Tax on profits	Income tax + NI	Corporation tax (19–25%)
Personal liability	Unlimited	Limited to your investment
Admin	Self Assessment only	Annual accounts + payroll + confirmation statement
Privacy	No public filing	Accounts filed publicly at Companies House
MTD from April 2026	Quarterly submissions required (over £50k)	Separate regime — not affected by MTD Income Tax

Both structures have genuine advantages. The question is which set of trade-offs fits your situation — and, critically, your profit level.

Tax: how much will you actually pay?

This is where most people start — and it is more nuanced than it appears.

As a sole trader (2025-26):

• Personal Allowance: £12,570 (tax-free)
• Basic rate: 20% on profits £12,571–£50,270
• Higher rate: 40% on profits £50,271–£125,140
• Class 4 NI: 6% on profits £12,570–£50,270, then 2% above

For a detailed breakdown, see our guide to income tax rates for sole traders 2025-26 and National Insurance for sole traders.

As a limited company (2025-26):

• Corporation tax: 19% on profits up to £50,000; 25% above £250,000 (marginal relief in between)
• You take a salary — typically set at the NI threshold, around £12,570/year — and the rest as dividends
• Dividend tax: 8.75% (basic rate), 33.75% (higher rate), 39.35% (additional rate)
• Dividend allowance: just £500

When the maths tips in favour of a limited company:

At lower profit levels — under £35,000–£40,000 — sole trader and limited company tax bills are very similar once you account for accountancy costs and the reduced dividend allowance. The traditional "£30,000 profit, go limited" advice no longer holds.

Most accountants now suggest the incorporation threshold is around £40,000–£50,000 in consistent profit. Even then, the net saving after increased accountancy fees — typically £800–£2,000/year for limited company accounts versus £300–£600 for sole trader — needs to be worthwhile.

Worked example at £50,000 profit:

Structure	Approximate tax bill
Sole trader	£13,000–£14,000 (income tax + Class 4 NI)
Limited company (optimal salary + dividends)	£10,000–£11,000 (corporation tax + dividend tax)
Net saving	~£2,000–£3,000/year — meaningful, but narrowing

Liability: when does it actually matter?

As a sole trader, you and your business are the same legal entity. If the business owes money or is sued, your personal assets — savings, home, car — are at risk.

As a limited company, your liability is limited to the amount you have invested in the company. Personal assets are protected in most circumstances.

When liability protection matters most:

• You work in high-risk sectors (construction, professional advice, healthcare)
• You have significant personal assets to protect
• You work on contracts where disputes and claims are realistic

When it matters less:

• You already carry professional indemnity insurance (which most freelancers should regardless of structure)
• Your work is low-risk service delivery
• You have few personal assets at stake

One point worth noting: professional indemnity insurance and limited company status are separate protections. Both a sole trader and a company director can — and often should — carry PI cover. Limited liability does not replace appropriate insurance.

Admin: what you are actually signing up for

This is where sole traders often underestimate the difference.

Sole trader admin per year:

• One Self Assessment return
• Keep income and expense records
• MTD quarterly submissions from April 2026 (if qualifying income over £50,000)

Limited company admin per year:

• Annual accounts (prepared and filed with Companies House)
• Corporation tax return (CT600)
• Confirmation statement
• Director's Self Assessment return
• Payroll / PAYE for your director's salary
• Dividend vouchers and board minutes

A limited company almost always requires an accountant. Factor an extra £800–£2,000/year in fees into your calculations. This additional cost is what erodes the tax saving at lower profit levels — and why the maths often does not stack up below £40,000.

When should a sole trader become a limited company?

The rule of thumb most UK accountants apply in 2026:

• Under £35,000 profit: stay as a sole trader. The tax saving does not justify the extra costs and admin.
• £35,000–£50,000 profit: start evaluating. Run the numbers with an accountant. The net saving may be £1,000–£2,000/year after costs — meaningful for some, marginal for others.
• Over £50,000 profit: incorporation usually makes financial sense. Tax savings become more material, and liability protection more valuable.

Other factors that can accelerate the decision:

• Clients require limited company status to award contracts
• You need to retain profits in the business and reinvest them over time
• You have a business partner (a partnership or LLP may also be worth exploring)
• The credibility of a limited company materially affects your ability to win larger work

The MTD factor: Making Tax Digital for Income Tax requires sole traders with qualifying income over £50,000 to file quarterly from April 2026. This partially closes the admin gap — sole traders now face more regular compliance obligations than they previously did. But limited companies carry a significantly more complex compliance regime of their own. MTD is not a reason to incorporate; it is a factor in the overall picture.

Use the MTD eligibility checker to confirm whether MTD applies to you and from when.

Making the switch: what incorporation involves

Incorporating is straightforward, but it has tax implications worth planning for.

The process:

1. Incorporate at Companies House online (around £50, usually same day)
2. Notify HMRC you have ceased self-employment as a sole trader
3. Transfer assets and contracts to the new company
4. Open a business bank account in the company name
5. Set up payroll for your director's salary
6. Appoint an accountant

Watch out for:

• Asset transfers — if you transfer assets of value into the company, HMRC may treat this as a disposal for capital gains purposes
• Timing — incorporating mid-year creates complexity; most people choose the start of a new tax year (6 April)
• Contracts — existing contracts may need to be reissued in the company name

The transition typically costs £500–£1,500 in professional fees on top of ongoing accountancy costs. Make sure the long-term tax saving justifies it before you begin.

The short version

Most sole traders are better off staying as sole traders until their profits consistently exceed £40,000–£50,000. Below that level, the tax saving from a limited company rarely outweighs the additional accountancy costs and admin burden. Above it, incorporation starts to make financial sense — but run the numbers with an accountant first, because the break-even point is specific to your situation.

The decision is not purely about tax. Liability protection, the credibility a limited company provides, and the ability to retain and reinvest profits all factor in. For the majority of freelancers and sole traders, however, the structure question can wait until profits are consistent and your accountant tells you the sums actually add up.