Yesterday I told you about actual auto expenses vs the IRS mileage rate as a business deduction. Just remember, using either method still requires you to have an auto mileage log to prove your business miles. So make sure you keep a mileage log, or the IRS can change or disallow your business miles and reduce or eliminate your deduction for auto expense. Email me at bstonercpa@sbcglobal. to ask me about this log and what you need to substantiate your business miles.