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 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. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Budget Check Up: Tax Time Is the Right Time Tax preparation may be the perfect time to give the household budget a check-up.