
Utilization looks backward at how professional time was used. Capacity planning looks forward and asks how much appropriate time is likely to be available for future work. The concepts are related but different.
Start with Available Capacity
Consider working days, planned leave, role, practice group, internal responsibilities, leadership time, training, business development, and existing commitments. Do not assume every nominal work hour is available for client work.
Estimate Matter Demand
Forecast active matters, expected new matters, matter phases, deadlines, historical effort, client urgency, and staffing requirements. Use ranges when demand is uncertain.
Use Historical Effort
For repeatable matter types, examine total hours, hours by role, hours by phase, variance, scope changes, and revision cycles. Historical data improves estimates but does not guarantee future demand.
Role-Based Capacity
A firm may have enough total hours but not enough partner review, specialist expertise, mid-level associate capacity, or paralegal support. Capacity should be role-aware.
Deadline-Weighted Demand
A matter needing 40 hours over two months differs from 40 hours due next week. Include due date, milestones, urgency, and dependencies.
Non-Billable Commitments
Management, recruiting, training, business development, and knowledge work consume real capacity. Ignoring them makes plans unrealistic.
Scenario Planning
Test expected, high-demand, and low-demand cases. Ask what happens if a new matter arrives, a deadline moves forward, scope expands, or a key lawyer becomes unavailable.
Forecast Accuracy
After the period ends, compare forecast with actual effort. Track forecast error, role mismatch, scope-driven change, unplanned work, and reallocation. Feed the results back into future estimates.
Capacity vs Performance
Do not use a capacity forecast as an individual performance score. It is an operating-planning tool designed to match work with appropriate resources.
How MIRA Fits
MIRA can improve historical effort data by capturing billable and non-billable work and organizing reviewed time by matter. A full capacity model also needs staffing, leave, deadlines, pipeline, and matter forecasts.
Related Resources
Frequently Asked Questions
What is lawyer capacity planning?
It is the process of matching expected legal work with realistic future professional availability.
Is capacity planning the same as utilization?
No. Utilization measures historical use; capacity planning forecasts future ability.
Can historical time data improve capacity forecasts?
Yes, especially for repeatable matter types.
What data does MIRA contribute?
MIRA contributes reviewed activity and time data; a full forecast needs matter demand and staffing data too.

