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 » Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Personal Finance Calendar Use this handy calendar to remember the year’s most important financial dates.