If you’re renewing your personal trainer certification with NASM, ACE, or AFAA,...

https://smart-wiki.win/index.php/NFPT_Renewal_is_Annual:_How_Do_I_Keep_Up%3F

If you’re renewing your personal trainer certification with NASM, ACE, or AFAA, expect to recertify every two years, while NFPT requires annual renewal