You can deduct the property tax portion (registration fee) that is based on the value, and paid annually. Assuming this trailer requires registration.
If you itemize deductions on Schedule A you can take a deduction
for state and local income tax paid
or
state sales tax paid.
You can compute the amount of sales tax by adding up your receipts for the year
or by using a table provided by the IRS.
In addition to this base amount you can deduct sales tax paid on
large purchases such as a car, truck, boat, etc.
To get to the area to enter
it:
While inside the software and working on your return
,
type property taxes - auto in the Search at the top of the
screen (you may see a magnifying glass there). There will be a popup that
says Jump to property taxes - auto. Select that to get
to the general area.