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 Prescription Drug Benefits Under Medicare (Part D) Do you need to enroll in Medicare Part D? Read this article to learn more about whether you need this coverage Retirement Plan Choices for Small Businesses Retirement choices can be intimidating. Picking the right strategy. Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last.