IRA basis not accumulating each year

[Markak15]

I've been using Turbo Tax to do my taxes for my entire adult life.  Between 2014 and 2020, I contributed the max to my traditional IRA each year.   In all of these years except 2018, my income exceeded the limit, so I could not deduct the contributions.  

When I look back at all my tax returns, the Form 8606 is always there (except for 2018), but for some reason my basis on line 2 is always $0.  It was $0 in 2014 which is correct, but then for 2015, shouldn't my basis had been $5500 based on the 2014 nondeductible contribution?  All the way out to 2020, it still shows a basis of $0 on line 2 of my Form 8606, when I believe it should say $34,000 based on the 6 years of nondeductible contributions. 

Have I been entering something wrong all these years?  It looks like the way to fix it is just to enter my basis when I do my 2023 taxes, with an explanation.  

If anyone understands why this is happening, please let me know!

[fanfare]

file with your current correct basis. (Note: not strictly correct).

you will be caught up.

do not attach explanation  unless IRS requests one.

keep records showing yout contributions and 1040s showing you did not take a deduction.

(The IRA deduction was recently moved to Schedule 1.)

@Markak15 

[Markak15]

Thank you, I will file with my correct basis, and luckily I have the records to back it up.  Apparently I've been clicking "no" all these years when they ask "did you have nondeductible contributions" when I should have been clicking "yes."