If I have a client that needs to amend 2017 with schedule f &c, do I need that year software or can I do that in 2018 software?

[abctax55 · Accepted solution]

Trying to use 2018 software to correct 2017 (especially a Sch C & F) in light of the tax law changes of TCJA of 2017 would make ME nervous   

[Just-Lisa-Now-]

I've always used the correct year's program for doing amended returns, but I know at the top of the 1040X you can choose which year its for...so it would seem like you could use 2018 for a different years amended return, but I don't understand how it would be using the correct tax rules or tables...I've always wondered how this works!

[George4Tacks]

You would use 2017 software to prepare the amendment, BUT if the state or federal X form has changed, then you MIGHT go to 2018 to prepare the 1040X and equivalent state form. 

Generally a "lightly" modified 1040x is acceptable. I believe that would be the case for 2017.