Pay Period Calendar 2024 Doing Business. Adp’s payroll calendar is your guide to pay periods and holiday closures. Continue reading for a better understanding of what a pay period is and what it means for your small business, and download our free pay period calendars that correspond with your business’s pay cycles.

Chock full of important information, key dates provide you. Tax periods determine the tax and national insurance thresholds used to calculate your employees’ pay.