Biweekly pay is when a business pays its employees every other week on a specific day of the week. For example, you might choose to pay your employees every other Friday. Since every calendar year has 52 weeks, this results in a total of 26 paychecks per year. This is different from semi monthly pay, which is paid out on two specific dates a month (e.g., every 5th and 20th of the month) and results in 24 paychecks per year.