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 Fixed or Variable Mortgage, Which Should You Pick? When selecting a mortgage, one of the most critical choices is between a fixed or variable interest-rate mortgage. Personal Finance Tips for Military Families Military families face unique challenges, making personal finance even more critical. The Cost of Procrastination Procrastination can be costly. When you get a late start, it may be difficult to make up for lost time.