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Disregarded Entity on a W-9: Which Name and TIN Do You Use?
October 26, 2026
Q. We have a customer who has provided their W-9. The W-9 has one business name on line 1 and the corresponding tax id # listed in part I. Then they have another business name listed on line 2 with a different tax id #. They say that doing this is valid because one of the companies is a disregarded entity. Is this ok? I’ve never had someone listed two tax id’s on the same W9.
A.
(Answered by IOFM's third-party tax expert)
The owner of the disregarded entity should be on line 1. This is who you…
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