I was looking for an option for the AMTI for my 2022 returns. I am pretty sure the 1040 Line 10 that is referenced in 2023 Turbo Tax version for the "regular taxable income" is supposed to be 1040 Line 15 in your 2022 tax return. This help reference is the same for the 2020 version and I looked back at my 2020 returns and the "regular taxable income" was on Line 11, not 10.
