401k loss deduction

[jasontax]

Is there any way I can claim my 401k materialized investment loss? thanks

[DoninGA]

Gains or losses within a 401(k) tax deferred retirement account are not reported on a tax return. 

If you made a withdrawal from the account then you would be receiving a Form 1099-R and that is reported on a tax return.

[Lisa3588]

What do you mean by "materialized investment loss"?  

1. Did you cash out your 401(k) account and the proceeds were less than you contributed?

2. Is your 2022 year-end balance less than your 2021 year-end balance?

3. Is this a Roth 401(k) account whose balance has declined?

[Mike9241]

since investment gains and other income aren't taxed, declines in market value and losses aren't deductible.