I have two personal vehicles - one is a "toy" that does not get used for business, the other is mixed use. I track my business miles via my employer's expense reporting system. I also have a written log.

My issue is this:

My company has an office - I periodically work there. I know travel to/from the office is not re-imbursible.

However, most days, I travel to clients both in and out of my home state via car. My employer re-imburses me for mileage above 70 miles round trip. In other words, the first 35 miles each way, are not reimbursed.

So, here's my question: can I deduct those 70 miles, and how would I fill out the forms? Most tax software I have seen - including HR Block and Turbo Tax, just ask for the total miles driven in the year, and then the total business miles. For some reason it just seems weird to me that if I had 100 travel days x 70 miles un-reimbursed per travel day = 7,000 miles (which at .54/mi is not a small amount of money), that number would be suspect to someone at the IRS. Does any of this make sense? Any help would be appreciated.