Whether umbrella or sole trader makes sense depends on how you are engaged and what your agency allows. For many agency contractors, there is not much of a choice. If the agency rules apply, you are taxed as employed, so sole trader is not on the table.
What’s the difference between umbrella and sole trader?
As a sole trader, you invoice clients directly and handle your own tax through Self Assessment. As an umbrella contractor, you’re employed by the umbrella company. The umbrella runs PAYE, NIC and payslips. For agency work, the agency rules can rule out sole trader. IR35 itself covers workers using an intermediary.
Sole traders set their own rates and claim business expenses. They pay tax once a year through Self Assessment. There is no employer, so you carry full responsibility for tax compliance.
Umbrella contractors are employees of the umbrella for tax purposes. They get a payslip each pay period. Employer and employee costs come out of the contract rate before pay is calculated.
Which option pays more?
This depends on how you are engaged. If you are genuinely self-employed, sole trader can be more tax efficient. You control expenses, and you pay income tax only on profit, not on turnover.
If the agency rules apply, you are taxed as employed and the agency runs PAYE. You do not pay as a sole trader on that work.
In 2026-27, the main rates are the same for both. Personal allowance is £12,570. Basic rate income tax is 20%. Higher rate is 40%. Employee NIC is 8% up to the Upper Earnings Limit and 2% above it.
For umbrella, employer NIC at 15% comes out of the contract rate first. The NLW is £12.71 per hour. Use the UK umbrella calculator to run your own numbers.
What does IR35 mean for sole traders?
The off-payroll working rules matter here. IR35 is the off-payroll working legislation. It targets workers who operate like employees but bill through an intermediary.
For public sector contracts, hirers have determined IR35 status since April 2017. For medium and large private sector hirers, the rules expanded in April 2021. Small private sector clients do not decide status. The worker’s intermediary does.
A sole trader contracting directly has no intermediary, so these rules do not normally apply. Medium and large clients issue a Status Determination Statement (SDS) to workers using an intermediary. Through an agency, separate agency rules can tax you as employed.
Many agencies require PAYE or an umbrella for this work. They may not accept sole trader invoices. Check with your agency before you rely on sole trader status.
When can you still use sole trader?
Sole trader still works in a few situations.
You work directly for clients and run your own business. With no intermediary, IR35 does not normally apply. Client size does not change your employment status.
You have multiple clients. Sole trader can work well when you genuinely take on several clients on short engagements. Bidding for work and not being directly supervised can point to self-employment.
You do ad-hoc project work. Short-term projects with genuine commercial risk on your side suit sole trader. Ongoing work for one client does not.
If a client directly supervises your work, you may not be self-employed. Talk to a specialist contractor accountant before you assume sole trader is available.
What does the umbrella option give you?
You keep the admin simple with an umbrella company for freelancers. You do not need an accountant for your main income. The umbrella handles payroll, PAYE and employment admin.
You get employment rights as an umbrella worker. These include statutory sick pay, holiday pay and workplace pension auto-enrolment. Sole traders do not get those.
Holiday pay is at least 12.07% of your total pay when it is rolled up with each payslip. Some umbrellas hold it in a pot until you take leave. Ask which method they use before you sign up.
You also get PAYE employment that agencies recognise. Agencies are used to umbrella payroll, so they normally accept it without fuss.
What does JSL mean for umbrella contractors?
Since 6 April 2026, Joint and Several Liability (JSL) applies. Agencies now share responsibility for unpaid PAYE when their umbrella fails. That has made agencies much stricter about checking providers.
Some agencies may only work with umbrellas that hold FCSA, Professional Passport or SafeRec accreditation. If you choose an unaccredited umbrella, your agency may not accept it. You could lose the contract.
DASA Umbrella holds accreditation from FCSA, Professional Passport and SafeRec. Three independent bodies verify the payroll process. Very few umbrellas hold all three.
For more on how umbrella companies work, read the full explainer.
Should you switch from sole trader to umbrella?
If your agency wants an umbrella, the decision is already made. Read our guide on switching to umbrella company for the practical steps.
If you genuinely run your own business, sole trader may still suit you. Speak to a contractor accountant before you decide.
If you are unsure, start with DASA Umbrella. You can get a clear pay illustration before you commit. Visit DASA Umbrella to get started.
