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 Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications.