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 Social Security: By the Numbers Here are five facts about Social Security that might surprise you. Helpful Retirement Strategies for Women Learn how to address the challenges that women face when planning for retirement. Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax.