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 Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors. The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer. The Financial Literacy Crisis Many Americans are operating their personal finances with only the barest minimum of knowledge.