Has there been any concrete guidance published on whether notary income is considered a "a business" for purposes of the QBI deduction. (As public service work is not considered "a business" subject to SE tax).
Unicorns might exist, but I've never seen one. Certainly nothing that rises to the level of a trade or business. Are you saying you have a client with a thriving notary business that pays the mortgage and puts food on the table?
Can you explain how the money flows?
If I walk into a UPS store and pay the store $10 to have a document notarized, I'm pretty sure that's just regular income to the store. If, instead, I pay the individual at the desk (who is also a notary) $10 personally for notary services, then that particular individual may fall under the SE exception as a fee-based official (but they need to keep detailed records segregating notary income from other income). Unless your client with "a bunch of UPS stores" is the one doing the notarizing, I think it's just going to be trade or business income.
Just my $0.02 worth.