Whether to itemize deductions on your tax return depends on how much you spent on certain expenses last year. Money paid for medical care, mortgage interest, taxes, charitable contributions, casualty losses and miscellaneous deductions can reduce your taxes. If the total amount spent on those categories is more than your standard deduction, you can usually benefit by itemizing.
A taxpayer may not use the business standard mileage rate for a vehicle after using any depreciation method under the Modified Accelerated Cost Recovery System (MACRS) or after claiming a Section 179 deduction for that vehicle. In addition, the business standard mileage rate cannot be used for any vehicle used for hire or for more than four vehicles used simultaneously.