Tax Year Prior to 2020: Can the property tax deduction include the fee charged for using a credit card to pay?. $100 in property taxes, and a $2.50 fee. Is my deduction $100.00, or $102.50?

No, unfortunately, your credit card processing fee is not deductible.   Also, only the portion of your property taxes based on the value is deductible.

Is this a recent ruling? I found citations from 2014 & 2016 from other reputable companies like Intuit, that indicated that the convenience fee  *is* deductible.