I agree that TurboTax is very weak in supporting some basic stuff. I found one way to claim a tax credit without submitting a Form 1116, as allowed by the IRS (see Form 1116 Instructions). To get around TurboTax limitations, you need to either fill in Form 1116 as if you were going to submit it or select forms and go to Form 1116 I did the former but I suspect you can also do the later. When you have Form 1116 on your computer screen, go to line 33 and override it to enter the Foreign tax credit you can claim per the Form 1116 instructions. This will enter your claim on Line 1 of Schedule 3 and flow through to the 1040 or 1040-SR. Other than the fact that this is an annoying bypass of the TurboTax software design, the biggest issue is that this bypass will probably make it difficult to submit an electronic return. You will have to mail in your return. Also when you print out your return it will include Form 1116. Don't forget to throw out the Form 1116. Your return should be in full compliance with IRS regulations as long as the foreign tax credit you claim meets all of the conditions listed in the Form 1116 instructions.
