Why was my return in 2017 filed using 1040A and filed in 2018 as 1040?

[JulieR · Accepted solution]

The reason is that tax law changes have eliminated Forms 1040EZ and 1040A.  The new Form 1040 uses a “building block” approach, in which the tax return is reduced to a simple form. That form can be supplemented with additional schedules if needed. Taxpayers with straightforward tax situations would only need to file this new 1040 with no additional schedules.