1) set a generous threshold over which your inheritance gets taxed, inflation adjusted (e.g, 2M not including the principal residence) 2) tax 100% above it. (should only concern a fraction of a fraction of cases) 3) put all this tax's proceeds in a sovereign wealth fund 4) at 21, a citizen gets access to her redistributed generational wealth 5) profit
There's a reason why countries, like Sweden, have scrapped the inheritance tax - it doesn't work like that anymore. The benefits of wealth are exercised long before the inheritance can be applied. Your first home down payment, your education, your wealth generation while being on support by your parents, etc. - will push you off the ground faster, than any inheritance in a world where people easily live to 80-90. Mos…
You can perform a "child fund to the parents instead if you need earlier impact. And maybe we will need that as an incentive as 1st world populations decline. But it might not make a difference based on the spending habits of the parent.