You've landed a contract, the agency has sent over a "key information document", and now you have to decide: run your pay through an umbrella company, or set up your own limited company? It's one of the first real decisions a contractor makes, and it shapes your take-home pay, your admin, and your tax for years.
The honest answer is that neither option is "better" in the abstract. The right choice depends mostly on one thing: whether your contract sits inside or outside IR35. Get that part right and the rest follows.
This guide explains how each structure works, walks through an illustrative take-home comparison using current rates, and gives you a clear way to decide. It's written for UK contractors and freelancers weighing up their options for the 2026/27 tax year.
What is an umbrella company?
An umbrella company employs you. You do the work for the end client (often found through a recruitment agency), but on paper you're an employee of the umbrella.
The mechanics are straightforward. The agency or client agrees an "assignment rate" with the umbrella. That rate isn't your salary. It's the total pot the umbrella receives, and it has to cover the cost of employing you before anything reaches your payslip. So the umbrella takes out the employment costs it has to pay, deducts its own margin (a fixed weekly or monthly fee for running your payroll), and the rest becomes your gross salary. Income Tax and employee National Insurance are then deducted through PAYE, just like any employed job.
Because you're a genuine employee of the umbrella, you get statutory rights: holiday pay, sick pay, pension auto-enrolment. HMRC's own guidance confirms that the off-payroll working (IR35) rules "are unlikely to apply if you are employed by an umbrella company", which is exactly why umbrellas are the default for inside-IR35 work.
The trade-off is control. You don't decide how you're paid, and you can't claim the same range of business expenses you could through your own company.
What is a contractor limited company?
With a limited company, you set up and run your own business, usually as the sole director and shareholder. This is often called a personal service company, or PSC.
Your company invoices the client or agency, the money lands in the company bank account, and you decide how to pay yourself. Most contractor directors take a modest salary plus dividends, because dividends don't attract National Insurance. The company pays Corporation Tax on its profits, and you pay personal tax on what you draw out.
You get more control and, when a contract is outside IR35, better tax efficiency. The cost is responsibility: you're a company director with statutory accounts, a Corporation Tax return, payroll, dividend paperwork, and Companies House filings to keep on top of. Most contractors use an accountant to handle this, and the fee is a genuine business cost. Our accounting support for contractors is built around exactly this kind of setup.
How does IR35 decide which one suits you?
IR35, also called the off-payroll working rules, exists to stop people who work like employees from paying less tax just because they invoice through a company. The rules look at how you actually work, not what the contract is labelled.
- Outside IR35. You're genuinely in business on your own account: you control how the work is done, you can send a substitute, you carry commercial risk. A limited company is usually the more tax-efficient home for this income.
- Inside IR35. The way you work looks like employment. Here the tax advantage of a limited company largely disappears, because the income has to be taxed broadly like a salary anyway. An umbrella is usually simpler.
Who decides? For contracts with public sector bodies and medium or large private sector clients, HMRC's guidance is clear: "the client will be responsible for determining the employment status of the worker", and they must issue a status determination statement (SDS) explaining the decision. Only when you work for a small private sector client does the responsibility for deciding status sit with your own company.
If you're new to this, our deeper guide to IR35 for contractors walks through how status is assessed and what to do if you disagree with a determination.
Umbrella vs limited company: illustrative take-home comparison
Numbers make this concrete. Below is an illustrative example for the 2026/27 tax year. It is a simplified model to show the shape of the difference, not a personal calculation, and it assumes England/Wales/Northern Ireland rates (Scotland sets its own Income Tax bands).
The scenario. "Sam", a contractor, has agreed work worth £55,000 for the year. We compare two routes for the same headline figure: as an umbrella assignment rate, and as fees invoiced by Sam's own limited company on an outside-IR35 contract. Sam takes a director's salary of £12,570 plus dividends.
Umbrella route (the £55,000 is the assignment rate)
The assignment rate has to fund the cost of employing Sam before it becomes salary. The biggest cost is employer's National Insurance at 15% on pay above the £5,000 secondary threshold, plus a typical umbrella margin of around £25 a week (£1,300 a year).
| Step | Amount |
|---|---|
| Assignment rate | £55,000.00 |
| Less umbrella margin (£25/wk) | -£1,300.00 |
| Funds available for employment | £53,700.00 |
| Less employer's NIC (15% above £5,000) | -£6,352.17 |
| Gross salary | £47,347.83 |
| Less Income Tax (20% on income above £12,570) | -£6,955.57 |
| Less employee NIC (8% from £12,570 to £50,270) | -£2,782.23 |
| Take-home pay | £37,610.03 |
Limited company route (the £55,000 is company fees, outside IR35)
| Step | Amount |
|---|---|
| Company fees | £55,000.00 |
| Less director's salary | -£12,570.00 |
| Less employer's NIC on salary (15% above £5,000) | -£1,135.50 |
| Taxable profit | £41,294.50 |
| Less Corporation Tax at 19% | -£7,845.96 |
| Profit available as dividends | £33,448.54 |
| Income Tax on dividends (£500 allowance, then 10.75%) | -£3,541.97 |
| Take-home pay (salary + dividends after tax) | £42,476.57 |
In this illustration, the limited company route leaves Sam roughly £4,900 a year better off on the same headline figure, because outside-IR35 income avoids employer and employee National Insurance and uses lower dividend tax rates. The salary of £12,570 sits at the National Insurance primary threshold, so there's no employee NIC on it.
Two important caveats. First, if the contract were inside IR35, that gap would all but vanish, and the umbrella's simplicity usually wins. Second, the limited company figure is before accountancy fees and ignores any further planning (pension contributions, for example, are efficient under both routes). The dividend basic rate rose to 10.75% from 6 April 2026 (up from 8.75% in 2025/26), which narrows the limited company advantage compared with previous years.
To model your own day rate, use our take-home pay calculator rather than relying on a single worked example.
What's changing for umbrella workers from 6 April 2026?
There's a significant change to how umbrella pay is policed, and it's worth knowing about even though it shouldn't change your day-to-day pay if you use a compliant provider.
From 6 April 2026, responsibility for accounting for PAYE and Class 1 National Insurance on umbrella workers' pay moves up the chain. HMRC's guidance states the recruitment agency that supplies the worker becomes responsible for operating PAYE, and where there's no agency in the chain, that responsibility sits with the end client. HMRC can pursue the agency for any payroll taxes a non-compliant umbrella fails to pay over.
In plain terms: the government is cracking down on dodgy umbrella schemes (including those promising suspiciously high take-home percentages) by making the bigger businesses in the chain accountable. If your umbrella is reputable and runs proper PAYE, your payslip should look much the same. If a provider promises you 80% or 90% take-home, treat that as a red flag, not a deal.
Umbrella vs limited company: the pros and cons
| Factor | Umbrella company | Limited company |
|---|---|---|
| Best for | Inside-IR35 or short-term contracts | Outside-IR35, ongoing contracting |
| Tax efficiency | Lower (taxed like employment) | Higher when outside IR35 |
| Admin | Minimal, the umbrella handles it | Ongoing accounts, returns and filings |
| Control over pay | Low | High (salary and dividends) |
| Employment rights | Yes (holiday, sick, pension) | You're a director, not an employee |
| Expenses | Limited | Broader allowable business expenses |
| Set-up | Instant, just sign up | Form the company, set up payroll |
How do I decide? A simple decision path
Work through these in order:
- Check your IR35 status first. Read the client's status determination statement, or assess a small-client contract yourself. This is the single biggest factor.
- If you're inside IR35, an umbrella is usually the simpler, sensible choice. The tax saving from a limited company is largely gone, and you avoid the admin.
- If you're outside IR35 and plan to keep contracting, a limited company is typically more tax-efficient, as the illustration above shows.
- If you're testing the water, or this is a one-off short gig, an umbrella lets you start earning immediately without forming a company you might not need.
- Mix and match if your contracts vary. Plenty of contractors keep a dormant limited company for outside-IR35 work and use an umbrella when a role is inside IR35.
If you're a higher earner juggling multiple contracts or building toward something bigger, structuring this properly is exactly where good advice pays for itself. Our outsourced CFO and US-CFO services help contractors and small companies plan tax, drawings and growth with a clear head.
Not sure which way to jump? Book a free 20-minute call with a Zmartly accountant. We'll check your IR35 position and tell you, plainly, whether an umbrella or a limited company leaves you better off. Talk to a Zmartly contractor accountant.
FAQs
Is a limited company always better than an umbrella company?
No. A limited company is usually more tax-efficient only when your contract is outside IR35. Inside IR35, the income is taxed broadly like employment whichever route you choose, so the umbrella's lower admin often makes it the better practical choice.
Do umbrella companies deduct employer's National Insurance from my pay?
Effectively, yes. The assignment rate the umbrella receives has to cover employer's National Insurance (15% above the £5,000 secondary threshold for 2026/27) before your gross salary is worked out. It isn't a deduction from your salary, but it does come out of the overall pot, which is why your take-home is lower than the headline rate.
Can I switch from an umbrella company to a limited company later?
Yes. Many contractors start under an umbrella and form a limited company once they're confident contracting suits them and they have outside-IR35 work. You can run the new company alongside winding down umbrella assignments.
What is changing for umbrella companies in April 2026?
From 6 April 2026, the recruitment agency in the supply chain (or the end client where there's no agency) becomes responsible for operating PAYE on umbrella workers' pay, and HMRC can pursue them if a non-compliant umbrella fails to pay payroll taxes. If you use a compliant umbrella, your pay shouldn't change.
How much take-home pay will I keep through an umbrella company?
It depends on your rate, but expect to keep a meaningful chunk less than the headline assignment rate once employer's National Insurance, your margin and PAYE are taken off. Be wary of any provider promising very high percentages, as that often signals a non-compliant scheme.
