Additionally, only your 2017 donations can be used as deductions on your 2017 return. If you want to use the 2016 donations, you'll need to amend your 2016 return.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
