Form W9 doesn't expire and is valid as long as the information it contains is correct. W-8BEN, W-8BEN-E, and W-8ECI forms are usually valid for three years or as long as the forms contain correct information. W-8EXP and W-8IMY are usually valid indefinitely provided that the information doesn't change.
It depends on where the work is performed. If it's not in the US you need a w-8ben or imy depending on if its a person or a company. If it's in the US you need a w-9 and you have to withhold and remit 30% to the irs, there may also be state withholding requirements.
Foreign vendors do not complete the Substitute Form W-9; foreign persons or entities must submit one of five available forms. The vendor must determine the one most appropriate to their United States tax status for reportable transactions.
IRS Form W-8 Submission Foreign vendors do not complete the Substitute Form W-9; foreign persons or entities must submit one of five available forms. The vendor must determine the one most appropriate to their United States tax status for reportable transactions.
For U.S. citizens living outside the U.S. you will enter your INTERNATIONAL ADDRESS on the W9.
All US formed entities and US operations of foreign entities complete Form W-9. If you hold a permanent work Visa and reside in the US you may also complete a W-9. All others are considered to be non-US persons (also known as nonresident aliens) and will be required to complete a Form W-8.
The W-8BEN-E is an Internal Revenue Service (IRS) mandated form to collect correct Nonresident Alien (NRA) taxpayer information for entities for reporting purposes and to document their status for tax reporting purpose. (The form for individuals is the W-8BEN.)
If the owner of the disregarded entity is a foreign person, the owner must complete an appropriate Form W-8 instead of a Form W-9.
Do Non-US Companies Need W-9 and W-8 Forms? Foreign individuals and entities that don't reside in the U.S. don't need to file a W-9 form. The IRS, however, requires you receive a W-8 form from each foreign individual or company you conduct business with. Foreign aliens who are US residents will need to file a W-9.