UK Limited Company vs Umbrella: Which to Choose

The choice between operating through a personal service company (PSC) and through an umbrella company is the second-biggest decision for UK contractors after the IR35 determination. The two routes have materially different take-home outcomes, different administrative burdens, and different long-term considerations around pension and tax planning.

This guide compares the two structures across the main dimensions with worked examples at typical day rates.

How each structure works in practice

PSC operation: the contractor sets up a limited company (typically online through Companies House, around GBP 12-50). The contractor is sole director and shareholder. The company contracts with the agency or client. Income flows into the company; the contractor extracts via salary (typically up to the Personal Allowance) and dividends (from post-corporation-tax profit). Annual accountant fee around GBP 1,500-3,000 covers accounts, corporation tax return, payroll, VAT.

Umbrella operation: the contractor signs an employment contract with the umbrella. The umbrella contracts with the agency or client. Income flows into the umbrella as agency receipts. The umbrella deducts contractor's tax, NI, employer NI, Apprenticeship Levy, holiday pay accrual, and umbrella margin (GBP 15-35/week or 5-7%). The contractor receives net pay as an employee.

Worked example PSC: GBP 500/day, 215 days/year = GBP 107,500 fees. Allowable expenses GBP 6,000. Profit GBP 101,500. CT GBP 19,400 (19% on first 50k + marginal on next). Post-CT GBP 82,100. Salary GBP 12,570 + dividend GBP 69,500. Personal tax (dividend tax minus dividend allowance and other reliefs): around GBP 12,000. Total take-home around GBP 70,100. Effective rate 65% of agency fees.

Worked example umbrella: same GBP 500/day = GBP 107,500. Less umbrella margin GBP 1,500. Less employer NI ~GBP 12,000. Less holiday accrual ~GBP 12,000 (paid as cash later). Taxable employment income GBP 82,000. Income tax GBP 19,500 + employee NI GBP 4,800. Net cash GBP 57,700. Effective rate 54% of agency fees, rising to around 65% when the held holiday pay is paid out.

Take-home difference at different rates

The take-home gap between PSC outside IR35 and umbrella grows with rate. At low rates (GBP 250/day) the difference is modest (a few thousand a year) because the dividend efficiency is limited at basic-rate. At higher rates (GBP 600+/day) the gap widens to GBP 15-25k a year as more income would be in higher-rate or additional-rate bands if extracted as PAYE.

Comparative numbers at typical rates (approximate annual take-home assumed 215 working days):

• GBP 250/day: PSC GBP 38,000 / Umbrella GBP 34,000. PSC advantage GBP 4,000.
• GBP 400/day: PSC GBP 55,000 / Umbrella GBP 49,000. PSC advantage GBP 6,000.
• GBP 550/day: PSC GBP 72,000 / Umbrella GBP 63,000. PSC advantage GBP 9,000.
• GBP 700/day: PSC GBP 88,000 / Umbrella GBP 76,000. PSC advantage GBP 12,000.

These figures assume outside IR35 throughout. Inside IR35 PSC operation removes the dividend advantage and the PSC route delivers similar take-home to umbrella.

Pension contributions widen the gap. A GBP 30,000 employer pension contribution from the PSC saves around GBP 24,000 of total tax (corporation tax saving + dividend tax avoided). The same pension contribution through umbrella salary sacrifice saves around GBP 12,000 of tax + NI. The PSC's pension efficiency adds another GBP 10-12k a year to high earners.

Administration and operational burden

PSC administration: company formation, annual accounts to Companies House (9 months after year-end), confirmation statement (annual), corporation tax return (12 months after year-end), payroll filings (monthly if salary paid through PAYE), VAT returns (quarterly), Self-Assessment for the director.

Typical accountant fee GBP 1,500-3,000/year covers all the above for a typical PSC. The contractor's own time: 30-60 minutes a week on bookkeeping (or zero with bank-feed accounting software at minimal additional cost).

Umbrella administration: zero from the contractor's perspective. Sign timesheets each week, receive pay, that is the operational burden. The umbrella handles all tax, NI, holiday pay, pension auto-enrolment internally.

For contractors with limited tolerance for paperwork or those expecting only a short contracting period, umbrella's simplicity is valuable. For contractors planning to contract long-term, the PSC's admin is a small one-time learning curve plus modest ongoing fees against the substantial tax savings.

Pension and other tax efficiencies

PSC pension contributions are deductible by the company at the corporation tax rate (saving 19-26.5% on the contribution amount). The contribution is not taxable to the director. The pension grows tax-free. The combined tax saving versus extracting the same amount as dividend is around 50-60% on the contribution.

Umbrella pension contributions go through salary sacrifice or employee contribution. The contractor saves income tax and NI at marginal rate (typically 42% for higher-rate, 32% for basic-rate). The saving is less than PSC because there is no corporation tax saving and the dividend route is unavailable.

Other PSC efficiencies: business expenses (laptop, professional fees, business travel, business mobile phone) are deductible at corporation tax rate. The same expenses incurred personally by an umbrella employee are typically not deductible (umbrella's flat margin includes some expense recovery but is limited).

Family income splitting: a PSC's shares can be held by spouse/civil partner alongside the trading director. Dividends to a basic-rate spouse are taxed at 8.75% versus 33.75% at the higher-rate director's marginal rate. The settlements legislation (Jones v Garnett 2007) provides some protection for joint family ownership.

When umbrella makes sense despite PSC efficiency

Inside IR35 engagements: the PSC's dividend efficiency disappears under deemed payment rules; umbrella's simpler operation typically wins on net take-home and admin. Most inside-IR35 contractors operate exclusively through umbrella for the engagement period.

Short engagements (under 6 months): the setup cost of PSC (registration, bank account, accountant onboarding) outweighs the tax saving for short-duration work. Umbrella suits 1-2 quarter contracts.

First-time contractors: the operational learning curve of PSC can be daunting for first contracts. Many contractors start with umbrella for the first engagement, then move to PSC for the second engagement when they have more confidence.

Specific client requirements: some clients (often financial services, large public-sector engagements after 2017 reforms) refuse PSC engagements entirely, requiring umbrella for risk simplicity. The contractor has no choice on those engagements.

Setting up and switching

PSC setup: company formation through Companies House (24 hours online), business bank account opening (1-2 weeks with major banks; potentially faster with fintech business banks like Tide, Starling, Mettle), accountant engagement (typically 1-2 weeks to onboard), VAT registration if above threshold (4-6 weeks), payroll registration. Total typical setup 2-4 weeks before first invoice.

Umbrella setup: contractor onboarding usually within 1-2 days, sometimes same-day. ID checks, employment contract signing, payroll setup all handled by the umbrella. First invoice and pay cycle typically in the first week of engagement.

Switching PSC to umbrella: typically straightforward. The PSC remains as a dormant company between umbrella engagements (annual confirmation statement still required) and can be reactivated for a future outside-IR35 PSC engagement. Striking off the PSC (closing it formally) costs around GBP 10 and frees the contractor from confirmation statement obligations.

Switching umbrella to PSC: requires the company setup process above. The contractor must coordinate the timing - PSC needs to be in place before the first PSC engagement to handle invoicing and payments. Some contractors maintain a dormant PSC throughout umbrella periods to be ready for any outside-IR35 opportunity.

Family income splitting through PSC

A spouse or civil partner can hold shares in the PSC alongside the trading director, enabling dividend extraction at the spouse's marginal rate. Where one spouse is higher-rate and the other basic-rate, splitting 50/50 saves dividend tax of up to GBP 15,000 a year for higher-income households.

The Jones v Garnett (2007) House of Lords decision provided substantial protection for spouse shareholdings where both spouses contribute to family life. Typical structure: husband and wife each hold 50% of company shares; dividends paid 50/50; settlements legislation challenge unlikely. The structure has been used routinely by PSC contractors since 2007.

Umbrella structure has no equivalent. The contractor is sole employee of the umbrella; family income splitting through the umbrella structure is not available. For families where one spouse has limited independent income and the contractor's earnings sit in higher rate, the PSC's family income splitting opportunity is a significant advantage.

Worked example: a higher-rate contractor with GBP 80,000 of dividend income alone pays around GBP 26,800 of dividend tax. Splitting 50/50 with a basic-rate spouse: contractor takes GBP 40,000 (tax around GBP 8,800), spouse takes GBP 40,000 (with spouse's PA used by part-time employment, tax around GBP 3,400). Combined GBP 12,200 versus GBP 26,800 - saving GBP 14,600 per year.

Liability and personal risk between structures

PSC contractors operate through the limited liability of the company. Where the company faces legal action (a client claim for defective work, a supplier dispute), the contractor's personal assets are typically protected. However, directors can be held personally liable in specific situations: personal guarantees signed for company debts, wrongful trading under section 214 Insolvency Act 1986, breach of director's duties under sections 171-177 Companies Act 2006.

Professional indemnity insurance protects against client claims for professional negligence. Typical cover GBP 1m-5m for an IT or consulting contractor, premium GBP 200-600/year. The policy responds to claims arising from the contractor's services and is typically a contractual requirement under client agreements.

Umbrella contractors are employees of the umbrella, with the umbrella as the contracting entity. Liability for the contractor's services typically sits with the umbrella; the contractor's personal exposure is limited. The umbrella holds its own insurance covering its employees' professional acts.

Practical action: PSC contractors should hold professional indemnity insurance regardless of legal entity structure. Umbrella contractors are usually covered through the umbrella's insurance but should confirm the cover details and any contractor-specific exclusions before signing.

Pension contributions deep-dive

PSC pension contributions are the largest tax-efficiency difference between PSC and umbrella. A higher-rate contractor making GBP 30,000 of employer pension contributions through PSC saves approximately GBP 19,000 of total tax (corporation tax saving + dividend tax avoided + future tax-free growth in the pension wrapper).

The same GBP 30,000 through umbrella salary sacrifice saves approximately GBP 12,000 of tax + NI. The PSC route's GBP 7,000 advantage on pension contribution alone exceeds typical PSC administration costs of GBP 2,000/year. Multiplied across multiple years of contribution, the difference compounds materially.

For a contractor planning long-term pension saving (GBP 30,000+ per year for 20+ years), the PSC's pension efficiency is the single biggest financial reason to choose PSC over umbrella for outside-IR35 engagements. Above other tax-efficiency considerations, the pension uplift makes the PSC choice clear.

Edge case: contractors aged 50+ approaching retirement may make less use of pension contributions because the time horizon is short. For these contractors the dividend efficiency of PSC may matter more than the pension efficiency. The optimal structure varies with age and career stage.

Retained reserves and dormant period operation

The PSC can retain reserves rather than distribute all profit as dividend each year. Retained reserves accumulate at corporation tax rate (19-26.5%) without further personal tax until extracted. This is useful for contractors with variable income or those planning future periods of lower income.

During inside-IR35 periods (where the contractor works through umbrella), the PSC remains dormant - no trading income, no expenses, no corporation tax accruing. Annual confirmation statement and dormant accounts must still be filed at Companies House. Maintenance cost during dormant periods is minimal (GBP 13/year confirmation statement, modest accountancy for dormant accounts).

On returning to outside-IR35 work, the PSC reactivates. The retained reserves remain available for extraction as dividend in lower-income years. Some contractors plan dividend extraction to spread across multiple tax years to use lower marginal rates.

Practical action: maintaining the PSC even during longer inside-IR35 periods (rather than striking off and re-forming) preserves the option to return to outside-IR35 PSC operation without setup costs and delays. The annual maintenance is small relative to the strategic flexibility.

Frequently asked questions

PSC or umbrella: which has better take-home?

PSC outside IR35 typically delivers 5-15% more take-home than umbrella at the same agency rate, with the gap growing at higher rates. At GBP 500/day, PSC outside IR35 typically takes home around GBP 70k versus GBP 60-63k through umbrella - around GBP 8-10k per year advantage. Inside IR35 the PSC dividend efficiency is lost; umbrella simpler and similar net.

What does a PSC cost to run?

Annual accountant fee GBP 1,500-3,000 covers accounts, CT return, payroll, VAT, confirmation statement. Companies House confirmation statement GBP 13/year. Business bank account GBP 0-100/year. Business insurance (PI, public liability) GBP 200-600/year. Total GBP 1,800-3,800/year all-in. The PSC's tax saving versus umbrella at typical rates substantially exceeds this cost.

How long does a PSC take to set up?

Company formation through Companies House: 24 hours online. Business bank account: 1-2 weeks with major banks; potentially same-day with fintech business banks (Tide, Starling, Mettle). Accountant onboarding: 1-2 weeks. VAT registration if above threshold: 4-6 weeks. Total typical setup 2-4 weeks before first invoice. Some contractors maintain a dormant PSC continuously to be ready for outside-IR35 opportunities.

Can I switch between PSC and umbrella?

Yes between engagements. Many contractors maintain a PSC throughout their contracting career and operate inside-IR35 engagements through umbrella while the PSC is dormant. Mid-engagement switches are less common and depend on the specific contract terms. The PSC remains a separate legal entity requiring annual confirmation statements during dormant periods.

Do umbrella contractors get pension contributions?

Yes through auto-enrolment, on the same basis as any other UK employee. The umbrella enrols the contractor into a qualifying pension scheme (typically NEST or similar). Total contribution 8% of qualifying earnings (3% employer + 5% employee including tax relief). Some umbrellas offer salary sacrifice arrangements that provide better pension efficiency than the standard auto-enrolment minimum.

Does the umbrella margin come out of my pay?

Yes. The umbrella deducts its margin (typically GBP 15-35/week or 5-7% of the contract rate) from the gross income received from the agency or client. The deduction is before tax calculation. The margin covers the umbrella's costs (payroll processing, employment administration, holiday pay management, employer's liability insurance) plus profit. A GBP 25/week margin equates to around GBP 1,300/year on full-time contracting.