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 Question Thank you! Oops! Related Content Investments You’ve made investments your whole life. Work with us to help make the most of them. Retirement Redefined Around the country, attitudes about retirement are shifting. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits.