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. Share | Related Content Choosing a Mortgage Selecting a mortgage isn't an easy process. Get a better understanding of how professionals make the right decisions. Stop Wasting Money One way to find money is to examine your current spending habits and eliminate money wasters. Managing Your Lifestyle Using smart management to get more of what you want and free up assets to invest.