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 What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children. What to Look for in Personal Finance Apps An increasing number have been developed to help individuals with their personal finances. Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns.