Inside IR35 vs Umbrella Company: The Contractor Take-Home Comparison (2026/27)
An inside-IR35 limited company and an umbrella company arrangement can end up with very similar take-home pay, but the mechanics and admin burden differ. A worked 2026/27 comparison.
Why the two routes end up with similar tax treatment
Since the off-payroll working rules extended IR35 responsibility to medium and large private-sector clients, many contractors working on assignments determined to be inside IR35 find their pay taxed broadly as if they were an employee, regardless of whether they operate through their own limited company or an umbrella company. In both cases, Income Tax and employee National Insurance are deducted from the assignment income in a similar way.
Contractor Take-Home Pay Calculator (IR35)
Compare take-home pay outside IR35 (Ltd), inside IR35 and umbrella for any UK day rate. Side-by-side 2026/27 breakdown.
Open Contractor IR35 calculatorHow an umbrella company actually works
An umbrella company employs the contractor directly, receiving the agreed assignment rate from the recruitment agency or client, then calculating the contractor's gross pay after deducting:
- Employer National Insurance (funded from the assignment rate, not a separate employer cost as it would be for a genuine external employer).
- Apprenticeship Levy contribution, where applicable.
- The umbrella's own margin/fee for processing payroll.
The contractor is then paid the remaining amount through standard PAYE, with employee Income Tax and NI deducted as normal, plus statutory entitlements like holiday pay (often built into the calculation rather than paid as a separate top-up, depending on the specific umbrella's model).
How an inside-IR35 limited company arrangement works
A contractor can also remain inside IR35 while still operating their own limited company β in this case, the fee-payer (recruitment agency or client) deducts tax and NI at source in a broadly similar way to the umbrella model, paying the net amount to the limited company, which then typically passes it to the contractor as employment income (since the deemed employment income can't simply be extracted as dividends in the usual tax-efficient way while inside IR35 for that engagement). The contractor still bears the ongoing costs of running the limited company β accountancy fees, Companies House filings, and other admin β regardless of whether the current contract is inside or outside IR35.
Sole Trader Take-Home Pay Calculator 2026/27
Calculate your net take-home pay as a UK sole trader after Income Tax and Class 4 National Insurance. Compare with PAYE employment.
Open Sole Trader Pay calculatorA side-by-side view
| Factor | Inside-IR35 limited company | Umbrella company |
|---|---|---|
| Who employs the contractor | Contractor's own company remains, but income taxed as employment income for this contract | The umbrella company directly |
| Company admin costs | Continue (accountancy, filings) | None β no company to run |
| Tax treatment of assignment income | Broadly employment-equivalent | Employment (standard PAYE) |
| Flexibility for future outside-IR35 work | Company already in place | Would need to set up a company later if status changes |
| Complexity | Higher (company remains active) | Lower (single employer relationship) |
Choosing between them
- Keep the limited company running if future contracts are likely to include outside-IR35 work, where the company structure remains genuinely tax-efficient, or if the contractor wants to preserve a trading history/company track record.
- Use an umbrella company for simplicity, particularly for contractors expecting only inside-IR35 assignments for the foreseeable future, or new contractors not yet ready to take on company administration.
Sources
Frequently asked questions
What's the difference between being inside IR35 through your own company and using an umbrella company?
Both result in broadly similar tax treatment β Income Tax and National Insurance deducted as if employed β but an inside-IR35 limited company contractor still runs their own company (with associated admin and costs), while an umbrella company employs the contractor directly, processing pay through standard PAYE with an added margin/fee for the umbrella's service.
Does an umbrella company take-home pay include employer National Insurance?
Yes β the assignment rate paid to the umbrella company includes an amount notionally covering employer National Insurance and the Apprenticeship Levy, which the umbrella deducts before calculating the contractor's gross pay, meaning the headline day rate isn't what determines take-home directly.
Is it cheaper to keep a limited company running if inside IR35, or switch to an umbrella company?
It depends on individual circumstances β keeping a limited company running (even while inside IR35 for a specific contract) can make sense if the contractor expects future outside-IR35 work, while an umbrella company removes company administration and costs entirely, which suits contractors wanting simplicity or expecting only inside-IR35 assignments.
Try the calculators
Contractor Take-Home Pay Calculator (IR35)
Compare take-home pay outside IR35 (Ltd), inside IR35 and umbrella for any UK day rate. Side-by-side 2026/27 breakdown.
Sole Trader Take-Home Pay Calculator 2026/27
Calculate your net take-home pay as a UK sole trader after Income Tax and Class 4 National Insurance. Compare with PAYE employment.
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