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 Retirement Redefined Around the country, attitudes about retirement are shifting. Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income. Comparing Mortgage Terms Estimate the total cost in today's dollars of various mortgage alternatives.