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UK Calculator · 2026 Benchmarks

Workplace wellbeing ROI calculator

Model the financial return of a workplace wellbeing programme using conservative Deloitte, HSE and CIPD benchmarks. Adjust any input — the numbers update live.

Your workforce

Estimated annual return

£14.77return per £1 spent
Absence saving
£168,409
Presenteeism saving
£421,023
Attrition saving
£119,700
Total annual benefit
£709,132
Programme cost
-£48,000
Net benefit
£661,132
Net ROI
1377%
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Assumptions used

  • Loaded day rate = (salary × 1.25) ÷ 220 working days — covers employer NI and pension.
  • Absence reduction = 20% (Deloitte 2024 mid-range for proactive programmes).
  • Presenteeism cost = 2.5× absence cost (HSE long-run estimate).
  • Attrition replacement cost = 30% of annual salary (Oxford Economics).
  • Wellbeing programme reduces regrettable attrition by 15%.
  • All figures pre-tax, year-one. Returns compound from year two.

Frequently asked questions

What is the average ROI on workplace wellbeing?

Deloitte's 2024 UK Mental Health Report puts the average return at £4.70 for every £1 spent on workplace mental health, ranging from £4 for early-stage prevention to £8+ for organisational culture work. Physical and financial wellbeing show comparable returns.

How is workplace wellbeing ROI calculated?

ROI = (financial benefit – programme cost) ÷ programme cost. Benefits sum three buckets: reduced absence (sick days × loaded day rate), reduced presenteeism (HSE estimates 2–3× the cost of absence), and reduced attrition (replacement cost is typically 20–50% of annual salary).

What benchmarks does this calculator use?

Deloitte 2024 (UK mental health ROI), HSE annual stress and MSD statistics, CIPD absence-management survey averages, and Oxford Economics replacement-cost research. Numbers are conservative defaults — you can adjust any input.