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 Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). Coaches Coaches have helped you your whole life, in ways big and small. We'd like to be one of them. The Utility of Sector Investing Successful sector investing is dependent upon an accurate analysis about when to rotate in and out.