Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. 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 Where Will Your Retirement Money Come From? Retirement income may come from a variety of sources. Here's an overview of the six main sources. How to Appeal Your Property Taxes For homeowners who think their property taxes are too high, there are ways to appeal. Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process.