I've found that the regular HR people at my company are pretty clueless about these sort of specifics. I would check with Fidelity first. My 401k is with Vanguard, and I only found out about it by accident. I logged into their site and started reading the 401k plan rules that pertained to my company's plan, specifically about the withdrawal options. I noticed that there was an after-tax option that allowed for 2 withdrawals annually. It took some digging to figure out what this was at the time, but I'm glad I noticed it. It's really quite valuable and allows you to stuff a lot of money each year into a Roth.TennPaGa wrote: How do I find out if my employer will let me do this? What is the right question to ask?
Should I ask a benefits person at my company, or the 401k people (Fidelity for me)?
I get confused myself with all the terminology, but if you are speaking with a person at Fidelity, it's important not to confuse this with the Roth 401k option that some employers allow now. Those contributions are also after-tax, but this is completely separate/different.
Edit: Also, when I'm setting what % of my paycheck to put into my 401k, there's an option for "all pre-tax" and "all after-tax."