To calculate biweekly salary, divide the annual salary by 26, according to Carol Deeb for the Houston Chronicle. For instance, a $50,000 annual salary is divided by 26 to get a biweekly salary of $1,923.08.
Deeb further notes that a distinction must be made between bimonthly and semimonthly paychecks. Biweekly paychecks are dispensed 26 times throughout the year. This is because two out of 12 months last longer during the calendar year, which causes paychecks within those months to be issued three times. For a biweekly paycheck of $1,923.08, this means that an employee is paid $5,769.24 each month during those two uneven months. Semimonthly check dates are established twice a month regardless of a month's length, which result in 24 paychecks being issued.