Fully loaded cost is the total cost of employing a person, including base salary, employer National Insurance, pension contributions, benefits, equipment, allocated overhead, and any other costs directly associated with the employee. It represents the true economic cost to the business, which is always significantly higher than the salary alone.
Formula
Fully Loaded Cost = Salary + Employer NI + Pension + Benefits + Equipment + OverheadIn Depth
The fully loaded cost reveals the true price tag of each employee. Most hiring managers think in terms of salary, but the actual cost to the business is 20-40% higher once all employer costs and overhead are included. This gap can create significant budget surprises if FP&A teams do not ensure fully loaded costs are used in planning.
For a typical UK employee, fully loaded cost includes: base salary (the headline number), employer National Insurance (13.8% on earnings above the secondary threshold of £9,100), pension contributions (minimum 3% under auto-enrolment, often higher), benefits (private medical, life insurance, income protection), recruitment costs (amortised over expected tenure), training and development, equipment (laptop, monitors, ergonomic setup), software licences (per-user costs for tools and platforms), and overhead allocation (office space per desk, utilities, facilities).
For a UK employee earning £60,000 base salary, the fully loaded cost might break down as: salary £60,000, employer NI £7,024, pension at 5% £3,000, benefits £3,000, equipment amortised £1,500, software £2,400, overhead £4,000 = approximately £81,000 (35% above salary).
FP&A teams should publish a standard "cost multiplier" that department heads can use for quick headcount cost estimates. This might be 1.25x for a basic calculation (salary plus NI and pension) or 1.35x for a comprehensive fully loaded figure.
Understanding fully loaded costs is essential for make-vs-buy decisions (should we hire or outsource?), contractor rate comparisons (a contractor at £500/day may be cheaper or more expensive than a permanent hire depending on utilisation), and cross-border hiring decisions (UK employment costs versus other countries).
For a deeper walkthrough of each cost component, see our guide on calculating fully loaded employee costs. If you are weighing permanent hires against contractors, the contractor vs employee financial analysis provides a framework. Use the headcount cost calculator to model fully loaded costs for your own team, and explore the headcount plan template for a ready-made planning structure.
Real-World Example
A UK startup compares hiring a senior developer at £85K salary versus a contractor at £650/day. Fully loaded permanent cost: £85K salary + £10.5K NI + £4.25K pension + £3K benefits + £3K equipment + £5K office = £110.7K annually. Contractor cost: £650 x 220 working days = £143K but with no NI, pension, or benefits obligation and full flexibility. At utilisation above 77%, the permanent hire is cheaper — but the startup values flexibility while scaling and chooses the contractor for the first year.
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