Yeap, over the taxable estate limit, there are lots of tools, depending on the situation. Usually fall into one of the following camps: sqeeuze (such as using family limited partnership and attempting to maximize valuation discounts, such as minority interest or liquidity discounts), freezing (to freeze asset valuation and getting future appreciation outside of the estate, such as with grats, Idgt, and other trust or entities) and burning (spending down, such as maxing out annual gifting limits and paying for things outside of gifting limits).