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 My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. Year-End Charitable Gifting and You This article may help you maximize the benefits of your donation for your chosen charity. Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last.