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 Prescription Drug Benefits Under Medicare (Part D) Do you need to enroll in Medicare Part D? Read this article to learn more about whether you need this coverage Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies.