How to calculate after-tax portion in my IRA?

[Taxger]

Hi there,

I have a question on how to calculate my after tax portion as my IRA balance changes.

I had a balance of 100k in my IRA (5k after-tax and 95k pre-tax) at the end of 2023. Now the balance is 110k. Should my after-tax portion remains as 5k? Or it should be 5k* (110k/100k) = 5.5k?

Thanks

[VolvoGirl]

It always stays the same.  So 5,000.  

[Opus 17]

Your after-tax contributions are only what you put in after tax, because even on after-tax contributions, the growth is tax-free. 

[Taxger]

Thanks @Opus 17 . I guess there's a typo? You mean "even on after-tax contributions, the growth is NOT tax-free. "?