talk to a tax professional
generally its this way, unless you needed to travel for the business (sales appointments, customer service, delivery etc..)
travel expense is NOT a deduction, you have living expenses, stick house or on the road NOT deductible...etc,,
only expenses directly related to business, and business supplies
your phone, your internet, office supplies
the home office thing is even harder to claim in an RV, because its almost impossible to have a dedicated ROOM, that is the office housing everything for work, and not play or living
like i said this is general
you trade the stick house life for the mobile life, but unless you are visiting clients and can convince the IRS that fuel was cheaper than airline fair
you don't get to deduct any RV expenses
we have some members that work from the RV, a few day traders
some IT tech people, engineering consultant, etc..
i think for most the tax write offs are minimal
there was one who was a GOLF sales professional, who traveled a seasonal circuit, he had a special custom conversion, an RV turned into a traveling show room
he is/was the RARE exception