Just fill out your return and enter all your forms in the same place. The 1040SR is the same as the normal 1040 tax return. If you are over 65 you get the SR version that just has bigger type. You still use the same Turbo Tax program, either the Online version or the Desktop CD/Download program. It doesn't matter which 1040 you use.
The 1040SR was new starting in 2019. It is the same as the regular 1040 just larger type so it prints on 3 pages instead of 2 and the Standard Deduction chart is added to page 1. But has the same line numbers. You automatically get the SR if you or your spouse are 65. If you are using the Desktop program there is a way to force the one you want. You don't get any more deductions or credits by using the 1040SR.
When you print it will print on the 1040SR even if you see only the 1040 on the screen. You automatically get the 1040SR if you or your spouse is 65 or older. In the Desktop program you can tell it which one to print.
