Yes, all U.S. based publishers must send us a W9 form in order to be paid.
You can access a W-9 form here: http://www.irs.gov/pub/irs-pdf/fw9.pdf.
NOTE: You must populate and sign the W-9 correctly in order for it to be accepted by our team.
If this is sent without all required fields populated, including signature, it may significantly delay the process to get you set up to receive payments.
Please note that your payment will be on hold until we receive your W9 form. You can scan and email it to w9processing@partnerize.com.