Sole Trader vs Limited Company for UK Tradespeople — Which is Better for Your Trade Business? (2026)
The sole trader vs limited company question comes up the moment a tradesperson starts earning serious money. The short answer: sole trader is simpler and cheaper to run at lower profit levels, but a limited company starts winning on tax once your annual profit clears £40,000–£50,000. Here is every factor you need to weigh up.
The Core Trade-Off: Simplicity vs Tax Efficiency
As a sole trader, you and your business are legally the same entity. The income is yours, the debts are yours, and the admin is minimal. As the director of a limited company, you run a separate legal entity — one that pays corporation tax on its profits and can then distribute the remainder to you as a salary and dividends in a way that legally reduces your overall tax and National Insurance bill.
The trade-off is real. A limited company costs more to set up and maintain (accountancy fees, Companies House filings, annual accounts), but at higher profit levels those costs are dwarfed by the tax saved. Knowing the crossover point is the key to making the right decision for your stage of business.
How Sole Trader Works
Register with HMRC as self-employed and you are done. You file a Self Assessment tax return each January covering the previous tax year. All profits after allowable expenses are added to any other income you have, and taxed at income tax rates:
- Personal Allowance: £12,570 — taxed at 0%
- Basic rate band (£12,571–£50,270): taxed at 20%
- Higher rate band (£50,271–£125,140): taxed at 40%
- Additional rate (above £125,140): taxed at 45%
On top of income tax, you pay National Insurance. Class 2 NI was abolished from April 2024. In 2026 you pay Class 4 NI only: 6% on profits between £12,570 and £50,270, and 2% on profits above £50,270.
No payroll. No corporation tax return. No Companies House filing. Just one annual Self Assessment and payments on account in January and July. That simplicity is the main reason tradespeople stay sole trader for as long as possible.
How a Limited Company Works
You incorporate at Companies House, creating a separate legal entity. The company earns revenue, deducts its expenses, and pays corporation tax on the remaining profit:
- Small profits rate: 19% on profits up to £50,000
- Marginal relief: effective rate between 19% and 25% on profits £50,001–£250,000
- Main rate: 25% on profits above £250,000
After the company pays corporation tax, you extract money as a combination of salary and dividends. Most directors set their salary at the secondary NI threshold — £9,100 in 2026/27 — which is enough to maintain a National Insurance contribution record without triggering employer or employee NI. Remaining profit is taken as dividends, which are taxed at lower rates than income: 8.75% (basic rate), 33.75% (higher rate) and 39.35% (additional rate), with a £500 dividend allowance each year tax-free.
The Break-Even Point: Around £40,000–£50,000 Profit
At lower profit levels, the accountancy costs of running a limited company (roughly £800–£2,500 per year) cancel out any tax saved. The break-even point shifts depending on your exact accountant fees, but the rule of thumb for tradespeople in 2026 is:
| Annual Profit | Verdict |
|---|---|
| Under £30,000 | Sole trader almost always better — admin costs outweigh any saving |
| £30,000–£40,000 | Marginal — depends on accountant fees and personal circumstances |
| £40,000–£50,000 | Limited company starts to win — typical saving £1,000–£2,500/year after costs |
| £50,000+ | Limited company clearly better — saving grows significantly as profit rises |
Worked Example: £60,000 Profit — Sole Trader vs Director
Take a plumber with £60,000 net profit before any personal drawings or salary. Here is how the two structures compare (2026/27 rates, single person, no other income):
As a sole trader
| Profit | £60,000 |
| Income tax (20% on £12,571–£50,270, 40% on £50,271–£60,000) | ~£11,432 |
| Class 4 NI (6% on £12,570–£50,270, 2% on £50,271–£60,000) | ~£2,486 |
| Total tax + NI | ~£13,918 |
| Take-home | ~£46,082 |
As a limited company director
| Company profit | £60,000 |
| Director salary (at secondary NI threshold) | £9,100 |
| Remaining profit after salary | £50,900 |
| Corporation tax (19% small profits rate) | ~£9,671 |
| Profit available as dividends | ~£41,229 |
| Dividend tax (8.75% on £41,229 minus £500 allowance, above personal allowance remaining) | ~£2,890 |
| Total tax (corp tax + dividend tax) | ~£12,561 |
| Take-home (salary + dividends after tax) | ~£47,439 |
The saving at £60,000 profit: approximately £2,000–£3,500 per year after typical accountancy costs of £1,200–£1,500. The exact figure depends on your accountant, your personal allowance usage, and whether you leave any profit inside the company.
These are approximations. Your circumstances will differ. Always confirm with a qualified accountant before making any structural decision.
National Insurance: The Hidden Saving
National Insurance is where the limited company structure quietly wins a large part of its advantage. As a sole trader, you pay Class 4 NI at 6% on profits between £12,570 and £50,270 — that is up to £2,262 a year before you even touch the 2% rate on higher profits.
As a limited company director drawing a salary of £9,100 (below the secondary threshold), you pay zero employee NI and zero employer NI on your salary. Dividends are not subject to NI at all. The result is a structurally lower NI burden at most profit levels, which is a significant part of the overall saving illustrated in the worked example above.
VAT Registration: Same Rules for Both Structures
VAT applies to turnover, not to your business structure. If your VAT-taxable turnover exceeds £90,000 in any rolling 12-month period (2026 threshold), you must register — whether you are a sole trader or a limited company. The same VAT schemes (standard, flat rate, cash accounting) are available to both. Incorporating does not reset your VAT registration, and if you are already VAT-registered as a sole trader and then incorporate, you will need to transfer the registration to the new company.
CIS: Works for Both Structures
The Construction Industry Scheme applies regardless of whether you operate as a sole trader or a limited company. A limited company can be registered as a CIS subcontractor and have deductions made by contractors at the standard 20% rate (or gross payment status if you qualify). The company then offsets those CIS deductions against its PAYE and corporation tax liabilities.
One important point: as a limited company director, your CIS deductions are made to the company — not to you personally. The money stays in the company account until you extract it as salary or dividends. This is a cash flow consideration worth understanding before you switch structure.
Personal Liability: The Protection Argument
A limited company is a separate legal entity. In most circumstances, your personal assets — your home, savings, car — are protected if the business is sued or cannot pay its debts. As a sole trader, there is no legal separation: a court judgment against your business is a judgment against you personally.
This protection is real, but it is not absolute. If you personally guarantee a business loan or credit line, that liability follows you regardless of the company structure. Directors who trade fraudulently or recklessly can also be held personally liable. That said, for most tradespeople, limited liability is a meaningful benefit — particularly if you take on larger contracts where the financial exposure is significant.
Setting Up a Limited Company: Costs and Process
Incorporating at Companies House costs £13 online and takes less than 24 hours. You can do it yourself at companies house.gov.uk or through a formation agent for £20–£50. You will need:
- A company name (must be unique on the Companies House register)
- A registered office address (can be your accountant's address)
- At least one director (you)
- At least one shareholder (usually you, holding 100% of shares to start)
- A Memorandum and Articles of Association (standard versions are available)
Most tradespeople who incorporate also use an accountant to handle the initial setup, which typically costs £200–£500 as a one-off fee. The accountant will set up the PAYE scheme, advise on share structure, and make sure you are registered correctly with HMRC.
Ongoing Running Costs of a Limited Company
This is where many tradespeople underestimate the commitment. Running a limited company is more administration-intensive than being a sole trader, and that administration costs money:
| Cost | Typical Range |
|---|---|
| Accountancy (annual accounts, CT600, Self Assessment, payroll) | £800–£2,500/year |
| Confirmation statement (Companies House) | £34/year (online) |
| Registered office address (if using a third party) | £50–£150/year |
| Business bank account | £0–£25/month |
| Total typical overhead | £1,000–£3,000/year |
These costs are all tax-deductible against your corporation tax bill, which reduces their net impact — but they need to be factored into your break-even calculation nonetheless.
IR35 and Off-Payroll Working: When It Applies
IR35 legislation targets contractors who work through their own limited company but are operating in a way that is economically indistinguishable from being an employee. If IR35 applies to an engagement, the income from that contract is treated as employment income — meaning you pay full income tax and NI with no dividend advantage.
For most tradespeople working on domestic properties — plumbers, electricians, builders, roofers — IR35 is unlikely to apply because:
- You supply your own tools and equipment
- You take on financial risk (fixed price quotes)
- You work for multiple clients, not one dominant engager
- You have the right to substitute another worker
However, if you work primarily for one main contractor on a long-term basis — particularly in the medium and large private sector or public sector — it is worth getting a formal IR35 assessment. Working outside IR35 is one of the primary reasons to have a limited company; working inside IR35 removes most of the tax benefit.
When to Stay as a Sole Trader
Sole trader is the right structure if:
- Your annual profit is consistently below £35,000–£40,000
- You are just starting out and turnover is uncertain
- You value minimal admin and do not want the overhead of running a company
- Your business situation is temporary — you are testing a trade, filling in time between jobs, or planning to retire within a few years
- You do not have significant personal assets that need protecting from business risk
There is no shame in staying sole trader. The majority of UK tradespeople operate this way and it is a perfectly legitimate and efficient structure for smaller operations.
When to Switch to a Limited Company
Consider incorporating when:
- Your net profit is consistently above £40,000–£50,000 per year
- You want to protect your home and personal savings from business liability
- You are taking on larger commercial contracts where clients expect a limited company
- You want to retain profit inside the company to fund growth rather than withdraw everything
- You are clearly working outside IR35
- You want to bring in a business partner or investor — limited company share structure makes this straightforward
Getting Professional Advice: Why a Trade-Specialist Accountant Is Worth the Cost
The numbers in this article are illustrative. Your actual tax position depends on your full income picture — other employment income, rental income, partner's income, pension contributions, and a dozen other factors that shift the calculation.
A trade-specialist accountant — one who works predominantly with plumbers, electricians, builders and other tradespeople — will understand CIS, the specific expense claims available in your trade, and how to structure your extraction from a limited company optimally. The cost of a good accountant (£1,200–£2,000 per year for a limited company) is almost always recovered in tax savings and avoided mistakes.
Ask for a referral from other tradespeople in your area, check whether they are regulated by the ICAEW, ACCA or AAT, and get a fixed-fee quote up front so there are no surprises at year end.
Side-by-Side Summary
| Factor | Sole Trader | Limited Company |
|---|---|---|
| Setup | Register with HMRC — free | Companies House — £13 online |
| Tax on profits | Income tax up to 45% | Corporation tax 19%–25%, then dividend tax |
| National Insurance | Class 4 NI on all profits over £12,570 | Minimisable through salary/dividend mix |
| Personal liability | Unlimited | Limited (with exceptions) |
| Admin burden | Low — one Self Assessment return | Higher — accounts, CT600, confirmation statement, payroll |
| Accountancy cost | £200–£600/year | £800–£2,500/year |
| CIS | Works fine | Works fine — deductions go to company |
| VAT | Same rules apply | Same rules apply |
| IR35 risk | Does not apply | Can apply — assess each contract |
| Tax sweet spot | Below £40,000 profit | Above £40,000–£50,000 profit |
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