Washington: 2014 optional standard mileage is used to calculate the deductible costs of operating an automobile for charitable, moving, medical and business purposes. These rates have been effective from Jan 1, 2014.
Taxpayers always have the options of calculating the actual costs of using their vehicle rather than making use of the standard mileage rates.
If the taxpayer has used any depreciation method under the Modified Accelerated Cost Recovery System (MACRS) or has claimed a Section 179 deduction for their vehicle, they can ignore using the business standard mileage rate.
In addition, the business standard mileage rate cannot be used for more than four vehicles that are used simultaneously. To learn more about the usage of the standard mileage rates, you can refer to Rev. Proc. 2010-51.
Notice 2013-80 contains the following details:
- The standard mileage rates
- The amount a taxpayer must use in calculating reductions for depreciation under the business standard mileage rate
- The maximum standard automobile cost that a taxpayer may use in computing the allowance under a fixed and variable rate plan