Form 2106 has not been available for employees since 2018; the TCJA suspended its use at least until 2025. That form is for w-2 employees to claim job-related (related to the w-2 generating employment) expenses. See this FAQ about Form 2106 expenses.
If you are self-employed, you should be using Schedule C for expenses and your business vehicle deductions.
When the IRS classifies your business as a hobby
Taxes and licenses can be deducted by the self-employed on Schedule C - - but not by employees on Form 2106.
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