Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

A merchant requests that checks be made out to “Cash”. Should I be suspicious?
There are benefits associated with a cash only business (the link states a few). However checks made out to "cash" don't reap those benefits listed. For anyone on SE to say your barber hides revenue from the IRS would just be speculation.  With that said there are a great number of disadvantages for a cash only business. And from my experience, a business that goes out of their way to take cash only can be a little suspicious. Luckily you are not committing any crimes or fraud by paying her cash.