If I use my truck for work (as a builder carrying tools and equipment, etc.) for someone else's business, can I deduct the mileage?

[katbales]

I use my personal truck as a work truck for the company I work for. I do not get reimbursed for driving. I carry tools and building materials needed on the job and often have to haul tractors, etc. with my own truck. The company does pay for fuel, but nothing else. Can I deduct the mileage to and from job sites because I haul tool/materials/etc. to job sites?

[Opus 17]

If you are an employee, your use of your personal vehicle is an employee expense.  Unreimbursed employee expenses are deductible, however they are itemized deductions and subject to the 2% rule so your benefit may be limited by your other tax situations.

To deduct work-related use of your vehicle, you must have a mileage log, diary, or keep track with an app, so you keep track of your business mileage (time, date, purpose, # of miles).  You can't deduct your daily commute to and from work, but if you travel to more than one job site in a day, that mileage qualifies.  You can deduct the standard mileage rate which is about 54 cents per mile.  However, you have to reduce the reimbursement by any tax-free partial reimbursements such as fuel.  If you enter the vehicle details and your work mileage, then go a few pages later and the program will ask if you received any tax free reimbursements.  The program will compute your net expense deduction and if it is more than 2% of your income, it will be added as a deduction on schedule A.