Turbo Tax will automatically give you the 1040SR if you or your spouse is 65 or older. It is exactly the same as the regular 1040, just bigger type so it goes on 4 pages instead of 2. The Standard Deduction Chart is on page 4.
In the Online version you don't get a choice which one to use. If you are using the Desktop program and look at it in Forms Mode it shows the 1040 but if you print it out it will be the 1040SR. There is a way to force the one you want in the Desktop program.
