再说一遍，designated beneficiary

All your bank, broker.... investments/cash need to put designated beneficiary. This proceeds any will you have. If you die, normally your spouse is the #1 beneficiary. If you both die the same time, #2 beneficiary got all the money. Only house may go through probation which is time and money consuming. But for your kids, they have a lots of time..... with the money in your bank, they can survive the probation.