Q. Can I deduct the miles on my personal taxes at the IRS rate of $.655/mile?
A. No. As others have said, W-2 employees are no longer allowed to deduct mileage.
Even in the "old days" , job expenses were only a misc. itemized deduction. You only got to deduct that portion of your misc. itemized deductions that exceeded 2% of your AGI, and then only if your total itemized deductions exceeded the standard deduction (which was doubled under the 2018 tax law. . (2% rule explained: https://ttlc.intuit.com/questions/2902781-what-is-the-2-rule ).
Your employer is doing it correctly; when an employee is paid a monthly car allowance, that money is taxable income. However, if you employer reimburses you under an "accountable plan" (instead of paying you a lump sum monthly allowance, he reimburses you for actual business miles driven), that reimbursement is not taxable income to you (and your employer still gets to deduct it as a business expense).
$6600 (12 x $550) divided by 30,000 = 22 cents per mile.
