What's smarter – paying off debts or investing?

It probably doesn’t happen as much as you’d like, but from time to time, you have some extra disposable income. When this happens, how should you use the funds? Assuming you have adequate emergency savings — typically, three to six months’ worth of living expenses — should you pay off debts, or fund your IRA or another investment account?

There’s no one “correct” answer — and the priority of these options may change, depending on your financial goals. However, your first step may be to consider what type of debt you’re thinking of paying down with your extra money. For e...