I am an international author, what do I need to do regarding the tax forms and ID numbers?

You will need to submit a Form W-8BEN to iUniverse. When filling out the form, please remember to include your IRS issued U.S. taxpayer identification number (ITIN for individuals, EIN for companies), your author account number, your country of citizenship, and claim to a lower tax treaty rate (if applicable). Even if you don’t have a U.S. taxpayer identification number yet, you should still submit an initial Form W-8BEN to establish that you are not a U.S. person. Submit the Form W-8BEN once you have a U.S. taxpayer identification number in order to claim a reduced rate or exemption from withholding if your country has an income tax treaty with the United States.