While the GOP has apparently tightened up on deductions from folks accelerating state and local tax payments, that was always going to be a somewhat limited option.

The big takeaway is this – you need to understand the structure of your current deductions — and whether you are in AMT now — and whether you will be itemizing or not next year.

And the best remaining option may be accelerating charitable giving if (a) you have plans to give in the future anyway; and (b) you have the means to do it now, especially, as we often recommend, doing so via donations of appreciated assets, especially stock.

We strongly encourage a conversation with your financial and/or tax advisor as soon as possible!

https://www.bloomberg.com/news/articles/2017-12-16/how-you-can-exploit-the-tax-bill-right-now