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 The Lowdown on Those Free Credit Scores What’s the deal with your yearly free credit report? The Five Basics of Financial Literacy How literate are you when it comes to your finances? Brush up with these five basics. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.