My mortgage company did not pay the full amount of my property tax bill in 2017. If they pay the balance now (in 2018) can I still deduct the payment on my 2017 taxes?
My mortgage company screwed up and only paid half of my tax bill from my escrow account in 2017. I discovered this after they sent me the 1098. They are in the process of paying the difference. I would like to deduct the upcoming payment on my 2017 taxes since I will exceed the upcoming $10,000 SALT limit in 2018. Is this allowed?