What happens if I contribute too much to 401k?

What happens if I contribute too much to 401k?

Dealing with excess 401(k) contributions after Tax Day The bad news. You’ll end up paying taxes twice on the amount over the limit if the 401(k) overcontribution isn’t paid back to you by April 15. You’ll be taxed first in the year you overcontributed, and again in the year the correction occurs, Appleby says. Mar 16, 2022