How Does Monthly PTO Accrual Work? 12 Pay Period Math
Published: September 24, 2026
•
Updated: September 24, 2026
•
US Workplace Guide
Direct Calculation Summary
A clear guide to calculating time off for organizations operating on a once-per-month payroll system.
Direct Answer: Monthly Accrual Rules
On a monthly schedule, employees are paid once per month (typically on the last business day or the 1st), resulting in 12 accrual events per year.
Monthly Accrual = Annual Hours ÷ 12
For an annual allowance of 120 hours, you receive exactly 10.00 hours per month. Check your rate on our Accrual Calculator.
Calculate Your Own PTO
Run your personal numbers through our free, real-time PTO calculators: