A 401k rollover is when you move money from an old retirement plan into a new one, like from a previous employer’s 401k to a new 401k or an IRA. This usually happens when you change jobs or retire. A rollover lets you keep your retirement savings growing without paying taxes or penalties right away, as long as it’s done properly. You can choose between a direct rollover, where the money goes straight to the new account, or an indirect rollover, where the money temporarily comes to you but must be redeposited within a short period. Rollovers can help you consolidate your retirement savings and keep your investments in one place.