To designate a new beneficiary, simply request a beneficiary form from your 401(k) administrator. Completing and submitting the form successfully changes your 401(k)'s beneficiary. You should ...

Many assets pass by beneficiary designation — which is the ability to fill out a form with the financial company holding the asset and name who will inherit the asset upon your death.

They range from beneficiary mistakes and RMD errors to failing to file the correct forms. Here are three of the mistakes that I’ve run into in my experience that are potentially costly — and ...