Can I have a copy of your W-9? March 20, 2019 21:01 Updated If you've placed an order on IOFM.com, a link to our most recent W-9 is available at the top of the invoice. Related articles What do the certification programs come with? I'd like to learn more about membership and/or certification before purchasing. What are my options? Can I have a PDF copy of my invoice or receipt? How do I add/remove members to my team membership?