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 Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month. What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability.