How is my take-home pay calculated when working through an umbrella company?

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An umbrella company is a business that employs contractors and processes their pay through PAYE, commonly used for inside-IR35 assignments. Understanding the two-stage deduction is essential, because the rate quoted by an agency (the assignment rate) is not your gross salary. Stage one - the assignment rate covers employment costs. From the rate the umbrella retains: its margin (a fixed weekly or monthly fee, not a percentage of a compliant umbrella), employer National Insurance at 15% on earnings above GBP 5,000 for 2026/27, and the apprenticeship levy (0.5%). What remains is your gross taxable salary. Note the GBP 10,500 Employment Allowance does not apply to single-director or umbrella arrangements, so the full employer NI is borne from the rate. Stage two - your gross salary is taxed like any employee. Income tax applies after the GBP 12,570 personal allowance: 20% on income to GBP 50,270, 40% above that, 45% over GBP 125,140. Employee NI (Class 1) is 8% between GBP 12,570 and GBP 50,270, then 2%. Any student loan and pension deductions also apply. Worked illustration of the structure (not exact figures): on a GBP 600/day inside-IR35 rate, the umbrella first strips out its margin and employer NI before you reach a gross salary, then PAYE and employee NI reduce that to net pay. The effective deduction from the headline rate to your bank account is often 30-45%. Who it affects: contractors caught by IR35, agency workers, and anyone choosing between umbrella and a limited company. Key 2026/27 points are the GBP 5,000 employer NI threshold and 15% rate, which raise the employer-cost slice. Always insist on a Key Information Document showing both stages. To estimate your figure, use a take-home pay calculator and check the national insurance and income tax tools.

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