Retirement tax questions

Help!

 

As usual, I am confused on the back door roth conversion.  In my example below for my forms by year 2020 and 2021,  why did Form 8606 in the 2020 return populate $7,000 on line 14 ...but...in the 2021 tax year, Form 8606 had $0 on line 14?

 

Is it because the contribution and conversion for 2020 did not occur until 2021, so form 8606 had a value in line 14?  Then, because the 2021 contribution and conversion and the 2020 contribution and conversion occurred in calendar 2021, it left a ZERO balance in 2021, therefore Form 8606 line 14 in calendar 2021 had a $0?

 

Now I am doing my 2022 back door Roth conversion (both contribution and conversion occurred in calendar year 2022).  Turbo tax wants to populate $0 in 2021 traditional IRA basis (makes sense, since line 14 on 8606 for 2021 was $0).   Is this correct?     

 

Would this mean that any year where the contribution and conversion occurred in the same calendar year as tax reporting year - the basis turbo tax will over is $0.  For example, when I do my 2023 taxes, form 8606 will pull over $0 basis for traditional IRA for 2022 (because contribution and conversion occurred calendar year 2022).

 

But let's say for example, I contributed and converted my 2022 contribution in January 2023 (just for example, I did not do this in 2022) - would turbo tax for 2022 pull over a basis of $7,000 for the traditional IRA basis for 2022?

 

 

 

Original Transaction:

  • March 2021 (all on same day)
    • $7,000 contribution made to traditional IRA – tax year 2020
    • $7,000 contribution made to traditional IRA – tax year 2021
    • $7,000 conversion to Roth IRA – tax year 2020
    • $7,000 conversion to Roth IRA – tax year 2021

 

2020 Tax Return:

  • Form 1040
    • Line 4 (a)   $0/blank
    • Line 4 (b)   $0/blank

 

  • Form 8606
    • Line 1     $7,000
    • Line 3     $7,000
    • Line 14   $7,000

 

2021 Tax Return:

  • Form 1040
    • Line 4 (a)    $14,000
    • Line 4 (b)    $0

 

  • Form 8606
    • Line 1    $7,000
    • Line 2    $7,000
    • Line 3    $14,000
    • Line 5    $14,000
    • Line 13    $14,000
    • Line 16    $14,000
    • Line 17    $14,000
    • Line 18    $0