Do I need to report taxes for any interests and dividends earned through HSA and 401k investments?

[Kell23elis]

My employer uses vanguard for my 401k and it buys stocks and bonds automatically using my monthly paycheck contribution. It accused some interests and dividends throughout the year. I did not withdraw from these accounts.

[Bsch4477]

Interest and dividend income generated within the retirement plan is not taxed. You only have a tax liability when you withdraw from the plan. 

Some states do tax such income, however, when generated within an HSA.