Insurance: $400 per month ($4,800 per year)
The cost of insurance depends on your driving record and can vary anywhere from $400 to $800 per month, Castillo estimates, though he pays closer to $400 a month.
Gas: $675 per month ($8,100 per year)
Gas also varies per driver and depends on your car model, how much you drive and where you're driving. Castillo says he fills up his tank every other day for $45. That's about $675 per month.
Maintenance: About $2,500 per year
This includes oil changes, tire repairs and brake repairs. Castillo has to change his oil every four to five weeks, which costs $70 each time.
His brakes are inspected every three months, which costs about $220 each time. As for tires, they get checked out every three months. It costs about $100 to repair each tire, but not every tire has to be repaired every time, he says.
Drivers are required to do a drug test every year and take courses in things like defensive driving and wheelchair passenger assistance, which they pay for out of pocket. Plus, Castillo buys cleaning products — he wipes down his leather seats every day — and gets the exterior of his car cleaned every few days.
Unexpected costs like traffic and parking tickets can also arise.
In total, that's about $17,000 of expenses to account for each year. Plus, he owes taxes on his earnings. Like any freelancer, he fills out a 1099 tax form every year to report his income.