Sole trader vs private limited company: our honest take on which is right for you
It is one of the most common questions we get asked, and the answer is rarely as straightforward as the internet makes it look. Here is how we actually think through the decision with clients — including the point at which the maths shifts.
Every week we speak to business owners wrestling with the same question: should I stay as a sole trader or move to a private limited company? The honest answer is that the right structure depends on where you are now — not where you hope to be in three years.
The sole trader vs private limited company debate tends to get distorted online. You will find articles that make incorporation sound like an obvious tax win for anyone earning decent money, and others that make it sound impossibly complicated. The truth sits somewhere in between, and it changes depending on your profit level, your appetite for admin, and a few other factors that do not always get the attention they deserve.
We have helped clients on both sides of this decision. Below is how we genuinely think about it.
What actually separates the two structures
A sole trader is the simplest way to trade in the UK. You and the business are legally the same entity. Your profits are your income, taxed through Self Assessment. There is no Companies House filing, no annual accounts in a prescribed format, and no corporation tax return. You register with HMRC, keep records, and file once a year.
A private limited company is a separate legal entity. It has its own registration number, its own tax obligations, and — critically — its own liability. When you trade through a limited company, the company owns the assets and owes the debts. Your personal exposure is generally limited to the value of your shares.
That liability protection is often undersold. For sole traders in higher-risk industries — trades, construction, client-facing services — the day your business runs into a serious dispute or an unexpected claim can be the day you wish you had incorporated. Limited liability is not just a technicality; it is real protection for your personal finances, your home, and everything else you have worked to build.
The company structure also opens doors that sole trader status does not: easier access to investment, the ability to bring in shareholders, and a more formal appearance when pitching for larger contracts.
The tax question: where does the maths actually shift?
This is where most of the debate lives, and it is worth being precise rather than vague.
As a sole trader, you pay Income Tax on your profits above the personal allowance (£12,570 in 2025-26) at 20%, 40%, or 45%, depending on your total income. You also pay Class 4 National Insurance contributions — currently 6% on profits between £12,570 and £50,270, and 2% above that. That combination bites harder as profits grow.
A limited company pays Corporation Tax on its profits — 19% on profits up to £50,000 for 2025-26, rising to 25% on profits above £250,000, with marginal relief in between. As a director-shareholder, you typically pay yourself a small salary (keeping you within the NIC threshold) and draw the rest as dividends. Dividends carry a lower tax rate than income and are not subject to National Insurance.
In broad terms: if your profits are under £40,000, the tax saving rarely justifies the extra cost and admin of running a company. Around £50,000 to £60,000 the comparison starts to tip. By the time you are consistently drawing £80,000 or more, a limited company structure is almost certainly more tax-efficient — often meaningfully so.
We always stress the word net saving. You will pay for accountancy, Companies House filings, and potentially payroll processing. Factor those costs in before assuming incorporation is a windfall.
The tax saving from incorporation is real — but it only becomes meaningful at the right profit level. Incorporating too early costs you more in admin than you save in tax.
Making Tax Digital changes the picture for some sole traders
Something worth flagging in 2026 specifically: Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) came into force on 6 April 2026 for sole traders and landlords with gross income above £50,000.
Under MTD, you are required to submit four quarterly updates to HMRC throughout the year, plus a final end-of-year declaration. That is a significant increase in reporting frequency compared to the traditional annual Self Assessment return — and it effectively means you need to maintain real-time digital records throughout the year.
Limited companies, by contrast, are not within the scope of MTD for Income Tax. They file an annual Corporation Tax return and, if VAT-registered, submit VAT returns under Making Tax Digital for VAT as they have done for some time.
For some sole traders crossing the £50,000 threshold, the arrival of MTD has prompted a genuine review of whether incorporation makes sense. The extra reporting burden of MTD, combined with the tax efficiency gains at higher profit levels, tips the balance for quite a few people. That said, a limited company has its own compliance obligations — it is not a simpler life overall, just a different set of requirements.
If you are approaching or above the £50,000 gross income mark and have not yet set up compliant software, this is worth addressing now rather than after the first quarterly deadline passes.
The factors that go beyond the tax calculation
We have seen clients incorporate purely for the tax saving and find they resent the extra admin within six months. Before making the move, it is worth thinking through a few things the headline numbers do not capture.
Privacy
Your limited company accounts are filed at Companies House and are publicly available. Your name, registered address, and financial results are on record. Sole traders have no such obligation — your income is private. For some clients, particularly those in professional services or those who do not want competitors reading their accounts, this genuinely matters.
Credibility with larger clients
Certain clients — particularly in construction, corporate supply chains, or the public sector — prefer to contract with limited companies. If winning those clients is part of your growth plan, incorporation can open doors that sole trader status keeps closed.
Future planning
A limited company structure is easier to grow, easier to sell, and easier to bring a business partner into. If there is any chance you want co-founders, investors, or an eventual exit, incorporating earlier tends to make that path smoother.
None of these factors overrides the tax maths, but they can tip a borderline decision one way or the other.
Our take
The sole trader vs private limited company decision is not one-size-fits-all, but it is also not as mysterious as some make it sound. For most people starting out or trading at lower profit levels, sole trader status is simpler, cheaper, and perfectly sensible. As profits grow — particularly above £50,000 — the case for a limited company strengthens, and MTD obligations for sole traders add further weight to that calculation.
If you are unsure which side of the line you fall on, the best starting point is a clear picture of your current profits and likely trajectory over the next two to three years. That is exactly the kind of conversation we have with clients regularly — no jargon, no pressure, just a straightforward look at what the numbers actually suggest for your situation.
Common questions
At what profit level does a limited company become more tax efficient?
As a broad guide, a limited company tends to become more tax efficient once profits are consistently around £50,000 to £60,000. Below £40,000, the admin and accountancy costs of running a company typically outweigh the tax saving. Above £80,000, incorporation is almost always the more efficient choice — though personal circumstances always affect the precise figure.
Do limited companies have to comply with Making Tax Digital in 2026?
No. Making Tax Digital for Income Tax Self Assessment applies to sole traders and landlords, not to limited companies. Limited companies file an annual Corporation Tax return and, if VAT-registered, submit VAT returns digitally — but they are not subject to the quarterly update requirements that now apply to higher-earning sole traders.
Is it complicated to switch from sole trader to limited company?
Incorporating is straightforward — you register a company at Companies House, which can be done in a matter of hours. The complexity lies in the transition: notifying HMRC, closing your sole trader registration, transferring contracts, opening a business bank account, and setting up payroll. An accountant can manage most of this on your behalf and make sure nothing gets missed.
Can I still pay myself a salary as a limited company director?
Yes. Most director-shareholders pay themselves a modest salary — typically set around the National Insurance secondary threshold to minimise employer and employee NIC — and draw additional income as dividends. The combination is usually more tax-efficient than taking the equivalent amount as sole trader profits, provided profits are at the right level.
What are the main ongoing obligations for a private limited company?
A private limited company must file annual accounts at Companies House, submit a Corporation Tax return (CT600) to HMRC, file a confirmation statement each year, run a payroll if paying salaries, and register for VAT once turnover exceeds the threshold. These are manageable obligations, but they require more ongoing attention than sole trader Self Assessment.