We've converted half our fairly sizable "empty nest" personal residence on a college campus into three studio apartments (separate baths, kitchenettes. separate patios and entrances, parking, shared used of main lawn).
To maintain all this we employ a regular inside and outside cleaning and maintenance service and a gardening service, both licensed businesses -- we pay them directly per invoices -- and deduct pro rata share of these costs based on floor area.
Over the course of a year we do get to know some of these service employees, and give some of them Christmas tips or cash gifts. Are these also deductible (on shared basis) as part of annual maintenance costs for these units?