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Guides on team cost modelling, salary benchmarks, scenarios, departments, and billing.

Cost assumptions

How to view and customise the cost assumptions used in all calculations.

Last updated 11 March 2026

Cost assumptions

TeamCalc uses UK 2025/26 tax rates and sensible defaults for overhead costs. You can customise these to match your organisation's actual figures.

Default assumptions

| Parameter | Default | Notes | |---|---|---| | Employer NI rate | 15% | Above secondary threshold (£5,000 for 25/26) | | Employer NI threshold | £5,000 | Annual secondary threshold | | Pension contribution | 5% | Employer contribution rate | | Benefits allowance | £2,000/year | Health, L&D, perks | | Equipment cost | £1,500/year | Amortised hardware cost | | Office cost | £4,000/year | Per-desk cost (set to £0 for remote) | | Recruitment fee | 15% of salary | Amortised over expected tenure | | Average tenure | 2.5 years | Used for recruitment amortisation | | Management overhead | 10% | Manager time per report | | Working days | 230/year | Used for contractor day rate calculation |

Customising assumptions

Visit Scenarios → Assumptions to adjust any parameter. Changes apply globally to all cost calculations in your workspace.

Common adjustments:

  • Set office cost to £0 if your team is fully remote
  • Increase pension to 8–10% if you offer enhanced contributions
  • Adjust recruitment fee based on whether you use agencies (20%+) or hire directly (5–10%)
  • Lower management overhead for senior/staff roles who need less oversight

Per-scenario assumptions

When building custom scenarios, you can override assumptions for that specific scenario without affecting your base team calculations.

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