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 A Living Trust Primer Living trusts are popular, but their appropriateness will depend upon your individual needs and objectives. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?