Form 3508S is the SBA's simplified forgiveness application. As of January 2021 SBA guidance, borrowers with loans $150,000 and under are eligible to use 3508S.
Form 3508S is different from the other forgiveness application forms, 3508 and 3508EZ, primarily because it does not require borrowers submit documentation substantiating the payroll and nonpayroll costs they are asking to be forgiven.