1. Tax year1) Calender Y: 1/1~12/312) Fiscal Y (11개): 4/1~3/313) 52~53 week tax year: ex)Last Sunday of Aug* Change of tax year: must get IRS approval 2. Tax accounting method1) Accrual method2) Cash method - Rev: Cash, property is received - Deduction: Cash, property is paid 예외 1) Prepaid exp -> Amortize over a period 2) Capitalizable expenditure(Equipment, machine, Furnit..