Five Mistakes to Avoid in Your 401(k)

5. Avoid the avoidable taxes

Not many participants deposit cash above the maximum deferral amount, but there are other ways to get taxed on retirement savings as well. For instance, transferring benefits directly, rather than allowing them to roll over to a successor plan, eliminates the need to satisfy withholding tax obligations and timing rules.

Another factor to consider is a Roth IRA -- which gets taxed before the contribution -- versus a 401(k), which is taxed upon withdrawal. The right choice depends on whether one believes tax rates will rise or fall.

All participants should know the tax rules and how they apply to each individual situation before choosing a plan, figuring out contributions and making any withdrawals or changes. While no one has a crystal ball, it's always best to make an informed choice.