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 Understanding Equity Compensation Net Unrealized Appreciation and how it affects tax responsibilities. What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA. What's New for Social Security? There have been a number of changes to Social Security that may affect you, especially if you are nearing retirement.