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 Question Thank you! Oops! Related Content The Business Cycle How will you weather the ups and downs of the business cycle? Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. How Income Taxes Work A quick look at how federal income taxes work.