Fidelity (our 401k plan manager) allows ongoing in-plan Roth conversion (so
you don't need to leave the company to convert the after-tax 401k
contribution to in-plan Roth from after-tax 401k contribution. Since the
conversion is automatically after each paycheck contribution, there won't be
any capital gain tax triggered). It looks like a very good deal and the
after-tax 401k contribution's annual cap is quite high (depending on the
plan). Any drawbacks?
