What is a W9 form, and do I need to fill one out?
A W9 is a US tax form. Go to www.irs.gov for further information. The W9 form must be returned by post and Elsevier will keep on file.
Do I need to fill out a W8 form?
You need to complete a W8 form if you are a US citizen working outside of the United States. More information is supplied on the PIF form, under the W8 tab. The W8 form can be returned by post or fax with your PIF form. Go to www.irs.gov for further information.