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 Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Life Insurance Myths: Debunked Whether you have life insurance through your work or are retired it pays to know the truth about life insurance coverage. Are Alternative Investments Right for You? With alternative investments, it’s critical to sort through the complexity.