Umbrella company
What it really means
A company that employs contractors and temps on behalf of agencies, running their PAYE and paying them. It simplifies tax but takes a fee and can reduce take-home pay. Check the deductions on the payslip carefully.
Context, tips & common mistakes
The classic umbrella shock is discovering the 'rate' you were quoted is the assignment rate — the umbrella deducts its margin and employment costs (employer's National Insurance, holiday funding) from that before your gross pay even appears, so your payslip shows less than the advertised figure without anything illegal happening. Insist on a written illustration converting the assignment rate into an estimated take-home before accepting, and check weekly payslips against it.
Holiday pay deserves special attention: depending on the model it is either paid alongside wages or accrued for you to claim — accrued holiday silently kept when workers forget to claim it is a known abuse. Refuse outright any umbrella promising unusually high take-home (80–85%) via loans or offshore structures: that is disguised remuneration, HMRC pursues the worker for the unpaid tax years later, and the schemes market themselves hardest at agency workers and new arrivals.