I found what I believe to be the most recent W-9 form on IRS.gov, which is dated at the top, “December 2014.” I had a vendor, an accounting firm, state that this was a very old form and the form has been revised since then...


Q. (cont.) What is the most recent blank W-9 form I should be using? Do you have a copy to send to me?

A. The W-9 form marked “(Rev. December 2014)” is not very old, and in fact is the current form in use. The IRS only changes the date on the form when it revises the form, which it has not done in this case since December 2014.

 See https://www.irs.gov/Forms-&-Pubs

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