Agency & Consulting Tools
Retainer Capacity Calculator
Plan retainer commitments and avoid over-servicing.
Capacity calculation
Protect retainer delivery with an explicit buffer
Contracted monthly hours are reduced by the selected delivery buffer before weekly capacity is calculated.
All calculations run locally in your browser. Change any visible control and the result updates immediately.
Calculated result
7.85 usable hours/week
- Contracted monthly hours
- 40.00 hours
- Weeks per month
- 4.33
- Delivery buffer
- 15.0%
- Reserved buffer
- 6.00 hours/month
- Usable delivery capacity
- 34.00 hours/month
Usable monthly capacity = contracted monthly hours × (1 − buffer%). Weekly capacity then divides usable monthly hours by weeks per month. The buffer is deliberately reserved for meetings, rework, urgent support, and delivery variance.