Thank you. Our deduction for 2018 was less than 80% of the tax we owe! (we normally get a few thousand in refund. we checked our W2s and deductions 3X last year to make sure we were not going to be in this situation but did not realize how badly we would be impacted by cap on salt and other deductions). I am at the cusp of penalty threshold and therefore, it has a chance of impacting. I am working on the form 2210 calculations right now with revised numbers to see what happens.
