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 Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP. Countering Counterfeit Currency Combating counterfeiting remains core to preserving the integrity of the nation’s money. Bi-Weekly Payments This calculator estimates the savings from paying a mortgage bi-weekly instead of monthly.