Before those 1099 questions appeared on 2011 returns ........

[LCP]

....... did you even broach the subject with your clients? All of them?

[Kram BergGold]

It Depended

I never broached the subject about needing a 1099 for rent paid by my clients business.
I never broached the subject of psychotherapists needing to do 1099 when claiming their therapy as a training expense.
I always talked to contractors and manufacturer's about 1099's.

[veritas]

Since forever

and every year the clients can't remember a thing.

[taxea]

If the client does her/his own books they should know the law and be able to answer this question. If they have a bookkeeper or accountant that is the person the client should direct the question to. I have providedd my business clients with the law (in layman language) for both the W9 and 1099 to insure they are aware of consequences.