Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content What If Your Kids Decide Against College? Rising college costs prompt students to seek alternatives; 529 account funds can be used for other education options. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits.