Umbrella Company Calculator UK: How Umbrella Take-Home Pay Works

What is an umbrella company?

An umbrella company is a UK business that employs contractors on PAYE and handles all payroll, tax and National Insurance on their behalf. Instead of running your own limited company or being paid directly by an agency, you become an employee of the umbrella for the duration of your assignments.

The umbrella signs a contract with your recruitment agency or end client, receives the assignment income, processes it through PAYE and pays you a net salary — usually weekly or monthly. You receive a payslip showing income tax, employee NI, the umbrella margin and any employer costs that have been funded from the contract value.

• You are an employee of the umbrella, not self-employed.
• You get statutory rights such as holiday pay, sick pay and pensions.
• The umbrella handles RTI submissions, payslips and end-of-year P60s.
• You can move between assignments without changing employer.

How umbrella pay works

The headline rate quoted by your agency is the assignment rate — what the end client pays for your work. Before you receive any salary, the umbrella deducts the employment costs it incurs as your employer, then runs what remains through PAYE.

• Assignment income — the day rate or hourly rate × hours worked.
• Umbrella margin — the umbrella's weekly or monthly fee.
• Employer National Insurance — 15% on salary above £5,000 per year.
• Apprenticeship Levy — 0.5% on the gross taxable salary.
• Holiday pay — usually 12.07% of pay, rolled up or accrued.
• Pension contributions — auto-enrolment or salary sacrifice.
• Income tax and employee NI — standard PAYE on the resulting salary.
• Student loan — Plan 1, 2, 4 or postgraduate, if applicable.

Why umbrella deductions feel high

Most contractors are surprised by the gap between their assignment rate and their take-home pay. The reason is simple: the assignment rate has to cover both employer and employee taxes, plus the umbrella's running cost. On a payslip from a permanent job you only see the employee side, so umbrella deductions look higher even when the underlying tax is similar.

Employer National Insurance explained

Employer NI is a tax paid by every UK employer on staff salaries above the secondary threshold (£5,000 per year in 2025/26) at a rate of 15%. With an umbrella company, the employer is the umbrella — but the cost is funded from your assignment income because no one else is paying it on your behalf.

Apprenticeship Levy explained

The Apprenticeship Levy is a 0.5% tax on the employer's wage bill above £3 million per year. Umbrella companies typically have wage bills well over that threshold, so the levy applies and is deducted from the assignment income alongside employer NI. It usually appears on your payslip as a separate line.

Rolled-up holiday pay

UK employees are entitled to 5.6 weeks of paid holiday per year, which is equivalent to 12.07% of working time. Umbrellas handle this in one of two ways:

• Rolled-up: 12.07% is added to each pay packet, so your take-home is consistent but you receive nothing extra when you take leave.
• Accrued: the 12.07% is held back by the umbrella and paid when you take holiday or when your assignment ends.

Umbrella vs limited company

The two main contracting structures are an umbrella company and your own limited company. Each has trade-offs:

Umbrella company

• Simple — no company admin or accountant fees.
• Continuous PAYE employment across assignments.
• Required if your contract is inside IR35.
• Lower take-home pay because all tax is PAYE.

Limited company (outside IR35)

• Tax-efficient salary/dividend split.
• Corporation tax of 19–25% on profits, then dividend tax.
• Requires an accountant and ongoing admin.
• Only suitable when the contract is genuinely outside IR35.

You can model both structures using our contractor calculator and umbrella calculator, then compare them in the IR35 comparison calculator.

Inside vs outside IR35

IR35 is HMRC's set of rules that decide whether a contractor is genuinely in business on their own account or is effectively an employee. Status matters because it changes how your income is taxed:

• Inside IR35: you must be paid via PAYE — typically through an umbrella — and cannot take dividends from a personal service company on that contract.
• Outside IR35: you can be paid through your own limited company and use a salary/dividend strategy.

How to estimate umbrella take-home pay

Rather than estimating manually, use our calculators to get a quick, accurate picture for the 2025/26 tax year:

• Umbrella Company Calculator — enter your day or hourly rate, margin, pension and student loan plan.
• IR35 Comparison Calculator — compare PAYE, umbrella and limited company side by side.
• Take-Home Pay Calculator — for a permanent salary baseline.

Common contractor mistakes

• Forgetting employer NI: assuming the assignment rate equals gross salary and being shocked by the deduction.
• Ignoring the umbrella margin: margins of £15–£30 per week are typical and add up quickly.
• Skipping pension contributions: salary sacrifice into a pension is one of the few ways to recover tax inside IR35.
• Comparing gross rates incorrectly: a £450 outside IR35 contract can pay more than a £550 inside IR35 contract.
• Not checking holiday treatment: rolled-up vs accrued can mean hundreds of pounds at year-end.