IRA Basis

Let's say that at June 1 2020 my Traditional IRA has a balance of 0.  Then on Feb 1 2021, I make a nondeductible contribution of $6000 and immediately convert it to a Roth.  On Feb 1 2022, I make a nondeductible contribution of $6000 and immediately convert it to a Roth.  What is my traditional IRA basis at Dec 31. 2020 and what is my traditional IRA basis at Dec 31. 2021?

 

Thanks

 

Tom