
Car Wash Bookkeeping: ASC 606 Deferred Revenue, Cost per Car, and 15-Year MACRS Tunnel Depreciation
How express car washes should recognize unlimited membership revenue ratably under ASC 606, allocate variable cost per car across water, electricity, and chemicals (~$1.50/car target), and depreciate tunnel equipment under 15-year MACRS with cost segregation and bonus depreciation.










