What is the equation used to calculate internal supply for a given year?

The equation for calculating internal supply effectively considers both the current staffing level and the anticipated changes in personnel due to inflows and outflows. By starting with the current staffing level, this approach provides a solid baseline of existing employees.

When projected outflows — such as retirements, resignations, or terminations — are subtracted from this baseline, it accounts for the expected reduction in staffing. Adding projected inflows, which include new recruits or transfers into the organization, provides a comprehensive view of how many staff members will be available in the future.

This equation captures the dynamics of workforce changes and allows public sector organizations to assess their internal supply of personnel realistically. It is vital for strategic planning, resource allocation, and ensuring that the organization has the right number of employees in place to meet its goals.

Other options do not accurately first calculate the remaining staff after accounting for those leaving before considering potential new hires. This misalignment complicates understanding the true internal supply situation.