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.
Should You Pay More Or Less Than the Standard Mileage Rate. The IRS Standard Mileage Rate is the rate provided by the IRS for mileage reimbursement for business use of a personal vehicle. In 2017, the rate is 53.5 cents per mile. The rate is a guideline based on average gas prices and average wear and tear on a vehicle (gas reimbursement is a part of this rate).