5 Smart Investing Principles 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 | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.