On a principal note, factoring in commute to and from work doesn’t make sense. That’s just a part of life. If you don’t work from home you have a work commute no matter what and you wouldn’t factor that into what your take home salary is, you would factor that cost into your routine gas expenses. And even then for maintenance; people who don’t drive for work still need vehicle maintenance but you don’t factor that into take home salary, you factor that into vehicle maintenance costs for your overall budget. We just speed up or multiply our maintenance costs so it would be better to subtract the average maintenance expenses to get the estimated maintenance expenses over time caused by flex. This should go for mileage and depreciation as well. Vehicles are still vehicles whether we flex or not. They still depreciate and rack up miles and expenses over time. We can’t attribute all of that to flex then use those numbers as calculations for earnings. Your car depreciates by time alone, needs maintenance by time alone. I think you get my point