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 Tax Efficiency in Retirement What role would taxes play in your investment decisions? Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic. Mastering Mobile Lingo Do you understand these common mobile slang terms?