Most SFH outfits seem to provide their helicopters 'wet', so you're not paying separately for fuel, just one set amount per (flight) hour. However, if you land away, does the landing fee count as part of the flight costs? Or are your pax allowed to pay that in its entirety?
As a hypothetical situation, if one had to travel for work, and decided to SFH a helicopter there and back, and one then claimed the cost of said flight back from ones employer (as a travel expense), I believe this is totally legal.