Originally as part of the Paycheck Protection Program (PPP), SBA guidance stated that borrowers could use something called the Alternative Payroll Covered Period if they used a biweekly or more frequent payroll schedule. This option was established to give borrowers more flexibility.
Changes to the PPP established in December 2020/January 2021, however, eliminated the Alternative Payroll Covered Period. Instead, the Covered Period length was given more flexibility.