Yes, you do have to enter information about your car in order to
claim the mileage differential.
Employee business expenses are reported on Form 2106, which goes
on Schedule A Itemized Deductions.
Further, it is in the miscellaneous itemized deduction category that is
limited by 2% of your Adjusted Gross Income (AGI). This means that if you are not using itemized
deductions and if the expense you are claiming does not exceed 2% of your AGI,
it will not make a difference in your refund or balance due.
Given that information and the numbers you mentioned, your
employee business expense based only on the mileage would be (4100 x 0.24) = $984. This may help you decide if it is worthwhile
to enter the information into your return.
Use these steps to get started entering Form 2106:
On the top row of the TurboTax online screen, click on Search (or for CD/downloaded TurboTax locate the search box in the upper right corner)
This opens a box where you can type in “2106” (be sure to enter exactly as shown here) and click the magnifying glass (or for CD/downloaded TurboTax, click Find)
The search results will give you an option to “Jump to 2106”
- Click on the blue “Jump to 2106” link
After the expenses have been entered, you will enter your reimbursements
and the resulting difference will be claimed on Form 2106.