If it were me, if the business did this each year at this time for the same reason and I had not filed on them in the past, I would not file now. If this is new and your gut tells you that they are trying to evade taxes, file.
I agree that you cannot be compelled but if this has come up, you'll have to able to document your decision against filing. My examiners wouldn't think twice about it unless they had other information to share about why we should...
Born once? Die twice.
Born twice? DIE ONCE!
Loan Review, HMDA, ALLL
Opinions are my own and do not reflect any others