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 Once Upon a Goal Do you know how to set up your financial goals for success? This knight does. Social Security: Maximizing Benefits There are other ways to maximize Social Security benefits, in addition to waiting to claim them. Mutual Funds vs. ETFs Exchange-traded funds have some things in common with mutual funds, but there are differences, too.