KarenJ said yes you can claim the deposit in 2018. JulieR said you will not include the deposit as an expense on your 2018 return, but report it on your 2019 return once placed in service. It can't be both. Either I can claim it in 2018 or I wait and claim it in 2019. If I can claim it on my 2018 return, what do I call it and where do I enter the information?
