Limited Company vs Umbrella Company: How to Choose Your Contracting Structure

Limited company vs umbrella: choosing how to contract

For UK contractors, the choice between trading through a limited company and working via an umbrella company is one of the most consequential decisions you will make. Get it right and you maximise take-home pay and retain control over your business. Get it wrong and you could hand a significant slice of your income to unnecessary costs or find yourself poorly positioned when IR35 status is assessed.

This guide sets out the practical differences so you can make an informed choice.

What is a limited company?

A limited company is a separate legal entity that you own and direct. As a contractor, you are typically both the sole director and an employee of your own company. Your personal service company (PSC) invoices the client or agency, receives the fee, and then pays you a combination of salary and dividends.

Key responsibilities include:

• Filing annual accounts with Companies House
• Paying Corporation Tax at the current rate of 19-25%, depending on profits
• Managing VAT returns if your turnover exceeds the registration threshold
• Meeting all HMRC deadlines for PAYE, self-assessment, and company tax returns
• Holding appropriate insurance, including Professional Indemnity and IR35 insurance

Setting up a limited company is straightforward. Most contractors complete the process within a few hours using an accountant, after which they need a dedicated business bank account and they are ready to trade.

What is an umbrella company?

An umbrella company acts as your employer. You sign an employment contract with the umbrella, which then contracts with the agency or end client. When an assignment is complete, the umbrella receives the fee, deducts its margin, and pays you via PAYE after Income Tax and National Insurance Contributions (NICs) are deducted.

The GOV.UK guidance on working through an umbrella company explains this chain clearly and is worth reading before you sign any umbrella agreement.

Advantages of an umbrella company:

• Minimal administration - no accounts, no company filings
• Immediate employment status and payslips
• Statutory employment rights such as holiday pay and sick pay entitlement
• Straightforward onboarding, often within a day

Disadvantages of an umbrella company:

• You pay employer and employee NICs on your gross fee, substantially reducing net pay
• Umbrella margins typically cost around 30 pounds per week or approximately 1,500 pounds per year
• Since April 2016, Travel and Subsistence tax relief no longer applies to workers supplied via intermediaries, including umbrella companies, removing a benefit that once softened the cost impact
• You cannot access the broader range of allowable business expenses available to a limited company director
• You cannot benefit from Corporation Tax rates or pay yourself in dividends

IR35 and why it determines the right choice

IR35 is the off-payroll working legislation that determines whether a contractor should be treated as a deemed employee for tax purposes. Your IR35 position - which the end client is legally required to determine via a Status Determination Statement (SDS) - is the single most important factor when choosing your trading structure.

If the client states the role is outside IR35

A limited company is the clear choice. Operating outside IR35 through your own PSC allows you to:

• Pay yourself a combination of salary and dividends, which is more tax-efficient than PAYE
• Claim a wider range of allowable business expenses
• Benefit from Corporation Tax rates of 19-25% on company profits
• Retain full control over your business finances

Using an umbrella company when a listing claims the engagement is outside IR35 is, in the view of most contractor accountants, a poor financial decision. You absorb all the disadvantages of umbrella employment without any of the offsetting benefit, because outside IR35 work does not carry the PAYE risk that umbrella engagement is designed to address. Inni Accounts and IT Contracting both set out the tax efficiency gap in detail.

If the client states the role is inside IR35

Where the client's SDS concludes that the engagement falls inside IR35, the tax advantage of a limited company disappears entirely, because all income must be subject to PAYE and NICs regardless of how you structure payment.

In this scenario, an umbrella company removes administrative complexity. It is worth noting that using a limited company for an inside IR35 role is not illegal - the company can operate a PAYE arrangement - but most agencies and clients now prefer or require umbrella engagement for simplicity of compliance. Contractors should check their agency's requirements before assuming one route is available.

Looking ahead: regulatory changes

From 6 April 2026, umbrella companies will be legally defined as employment businesses and brought into the PAYE rules for labour supply chains. This follows provisions in the Employment Rights Bill and means umbrella compliance will face significantly greater scrutiny. Contractors relying on umbrella arrangements should monitor developments via GOV.UK and seek advice from a qualified contractor accountant.

The Fair Work Agency (FWA) now has oversight responsibilities relevant to employment status enforcement, replacing the previous enforcement body.

Making the decision: a practical summary

| Situation | Recommended structure |

|---|---|

| Client states role is outside IR35 | Limited company |

| Client states role is inside IR35 | Umbrella company (most practical option) |

| Short-term or one-off engagement, IR35 position unclear | Seek advice before committing |

| You want minimal administration at any IR35 position | Umbrella company |

If you are contracting regularly through a limited company, ensure you carry IR35 insurance, have a clear substitution clause in your contract, and can demonstrate genuine control over how you deliver your work - both substitution and control are the factors that carry the most weight following the Supreme Court's reasoning in PGMOL.

This platform does not determine, verify, or warrant IR35 status; the SDS is the client's legal responsibility. Contractors should take their own advice and consider IR35 insurance.