For one thing you only get the benefit of the amount it puts you over the Standard Deduction. And property tax is limited. There is a max 10,000 limit (5,000 MFS) of property tax and state taxes "SALT". SALT is State And Local Tax. Which includes property tax, any state tax paid like for last year’s return and includes any state withholding from your W2s and any 1099s you have. And any taxes in W2 box 14 and 19 like SDI or VDI. You can only deduct up to 10,000 (5,000 MFS) for SALT State and Local Taxes.
