Picture of a brown recluse spider. Note the violin pattern on the cephalothorax and light-colored hairless abdomen. Picture of a brown recluse spider. Picture of a brown recluse spider head close-up. Generalized symptoms of bites from black widow and brown recluse spiders may include: 1  fever,  nausea,
Standard Mileage Rate Law and Legal Definition. The standard mileage rate (SMR), also known as mileage per diem, is the amount per mile that the Internal Revenue Service (IRS) allows small businesses and self-employed persons to use to calculate their vehicle expenses for tax deduction purposes.
The Internal Revenue Service (IRS) has issued the 2017 optional standard mileage rates and beginning on January 1, 2017, the standard mileage rates for the use of a car, van, pickup or panel truck will be: 1  53.5 cents per mile for business miles driven (down from 54 cents in 2016)