I don't think TT isn't handling the reporting of advance child tax payments correctly, as follows:
Line 19 of 1040 is populated using schedule 8812. IRS guidance for populating line 14f of that 8812 is as follows with one of their illustrative examples using, verbatim, one their instructions. ..
" Example 5. In 2020, John and Susan filed as married filing jointly with 4 qualifying children. In 2021, John and Susan received advance child tax credit payments of $6,000 based on 4 qualifying children. Both John and Susan receive Letter 6419. John's letter reports advance child tax credit payments of $3,000 in box 1 and 4 qualifying children in box 2. Susan's letter reports advance child tax credit payments of $3,000 in box 1 and 4 qualifying children in box 2. John and Susan file as married filing jointly on their 2021 tax return. John and Susan will add the amounts from box 1 of their Letters 6419 and enter $6,000 ($3,000 + $3,000) on line 14f.
TT does NOT follow this example. It rounds up (and presumably down too) each spouses portion, if that portion includes cents, and then it combines those already rounded amounts to populate line 14f. I believe rounding is only acceptable on any total amount detailed on a return/form and not in prior calculations that define any amount that should be input on the form. Under TT , if each spouse's portion ends with 0.50c then TT will round each portion up to the next dollar. That means once those two portions are combined the total amount detailed in line 14f will be off by $1. That doesn't sound correct to me based on the IRS example.
Also guidance on Tax Act suggests the same "If you have to add two or more amounts to figure the amount to enter on a line, include cents when adding the amounts and round off only the total" - see link below.
https://www.taxact.com/support/[removed]/forms-w-2-or-1099-rounding-off-to-whole-dollars#:~:text=You....
