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 Should I Buy or Lease an Auto? This calculator compares the financial impact of leasing versus buying an automobile. When Should You Take Social Security Monthly Social Security payments differ substantially depending on when you start receiving benefits. Please Leave Home Without It Concerns over identity theft continue to grow, especially with data breaches at major companies and financial institutions.