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. Related Content The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does. Debt Stress There’s a link between debt and stress. A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives.