Principles of Preserving Wealth The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Share | Related Content Do You Feel Lucky? Recent changes in estate tax laws could affect the strategy you have in place. Why You Need an Estate Strategy Do you have an estate strategy? You should. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability.