If we installed energy efficient windows in 2016 but didn't claim it or get a credit, can we claim it on the 2017 return or will we need to amend 2016?

[DoninGA]

You will need to amend the 2016 tax return to claim the credit.

See this TurboTax support FAQ for amending a 2016 tax return - https://ttlc.intuit.com/questions/3061514-how-do-i-amend-a-2016-return-in-turbotax

[kelly_girl22]

Thank you!

[kelly_girl22]

Do I need to wait for the 2016 amendment to be processed before filing the current return?

[DoninGA]

No.  You can file the 2017 tax return now.  You have up to three years from the original due date of the tax return to file an amended return showing a tax refund.  So for tax year 2016 the amended return would have to be printed and mailed on or before April 17, 2020.

[kelly_girl22]

Thanks again!