There has not been a 1040A since 2017 returns were filed. Now everyone uses either Form 1040 or Form 1040SR. The only difference between those forms is the larger print on the 1040SR. All of the calculations are the same. The software uses your age at the end of the tax year to determine whether you are on a Form 1040 or 1040SR---if you were 65 or older at the end of the tax year, you are on a 1040SR.
If you did not enter enough itemized deductions to exceed your standard deduction, you will not have a Schedule A. The form and schedules generated for your return depend on the data you enter each year.
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