Question about the Tax Deduction when leasing a vehicle?

I am using TurboTax.

Deducting vehicle registration fees

You may be able to deduct certain taxes included in the fees that you pay for your vehicle registration or vehicle license. You can’t deduct the total amount of your registration fee, just the portion that the state charged you for taxes based on the value of your vehicle.

Where can we find this amount?

What state are you in? In Virginia the bill is annual and sent to the lessor, paid by them then passed onto us. I would call the finance company.