Do I need to fill a W9 if I don't earn $600 within a year? Rosie October 08, 2018 17:22 Follow This is ONLY a requirement if you earn $600 in one calendar year. Related articles When do I need to fill out a W9? When do I receive my 1099? Do you remove taxes from my payment? I want to cancel and I want my payment. How do I verify my PayPal account? Comments 0 comments Article is closed for comments.