Pay Period

A pay period is the recurring time interval over which employee hours are tracked, wages are calculated, and pay is processed — with the most common US frequencies being weekly (once per week, 52 periods annually), bi-weekly (every two weeks, 26 periods), semi-monthly (twice per month on fixed dates, 24 periods), and monthly (once per month, 12 periods). Pay period selection affects both administrative complexity (payroll frequency) and employee cash flow (more frequent payments help employees with lower savings margins manage expenses). The operational consideration is the mismatch between how benefit costs are priced (typically monthly) and how they are deducted (across the number of pay periods per month) — which creates different deduction amounts per paycheck in bi-weekly schedules where some months have 3 paydays.