Realized Capital Losses within a 401K

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If one had a capital lost within a 401K held stock that was realized ( the stock lost 99% to 100% of value) can that be included in your overall capital loss?

[MarilynG1]

Generally, you cannot claim a capital gains loss on your retirement accounts that already are receiving favorable tax treatment. 

The only time you would have a loss is when you receive a distribution that had previously been taxed. 

For more information, see About Publication 575, Pension and Annuity Income.

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