If you don’t have a spouse or children, you might think you don’t need to do much estate planning. But if you have any assets, any familial connections, any interest in supporting charitable groups – not to mention a desire to control your own future – you do need to establish an estate plan.

In evaluating your needs for this type of planning, let’s start with what might happen if you die intestate – that is, without a last will and testament. In this scenario, your assets will likely have to go through the probate process, which means they’ll be distributed by the court acco...