Rural Letter Carriers Tax Simplification Act

Rural Letter Carriers Tax Simplification Act - Provides that, for taxable years beginning after 1986, rural mail carriers are permitted to compute the amount of the income tax deduction for use of their automobiles in performance of mail services: (1) by using a standard mileage rate for all miles of such use equal to 150 percent of the basic standard rate; or (2) without applying the limitation on deductions generally applicable in cases when the business use of the automobile accounts for 50 percent, or less, of its use.

Prohibits the use of 150 percent of the basic standard mileage rate in determining the allowable deduction if the taxpayer claims an investment tax credit or depreciation deduction for such automobile.