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
Available capacity is the time realistically available for appropriate client work, not every nominal work hour. Start with the calendar, then account for each role's commitments.
Capacity input | How it affects the plan |
Working days and planned leave | Establish the time available during the planning period. |
Role and practice group | Identify the expertise and type of work the person can support. |
Leadership and internal responsibilities | Reserve time for management and other firm obligations. |
Training and business development | Include non-client commitments that consume real capacity. |
Existing commitments | Account for work already assigned before accepting new demand. |
Keep capacity role-aware: spare hours in one role may not solve a shortage in another.
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
Use expected, high-demand, and low-demand scenarios rather than a single forecast. Test the changes that could make the current staffing plan unrealistic.
Scenario change | Planning question |
A new matter arrives | Which roles can absorb the additional work? |
A deadline moves forward | Can the required effort fit into the shorter period? |
Scope expands | What additional effort and expertise are needed? |
A key lawyer becomes unavailable | Who can cover the work without creating another bottleneck? |
After the period ends, compare the scenario assumptions with actual effort and refine the next forecast.
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.
