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 Life and Death of a Twenty Dollar Bill How long does a $20 bill last? The Richest Man in Babylon In good times and bad, consistently saving a percentage of your income is a sound financial practice. Tax Rules When Selling Your Home The tax rules governing profits you realize from the sale of your home have changed in recent years.