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 A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. Choosing a Retirement Plan that Fits Your Business To choose a plan, it’s important to ask yourself four key questions.