Dollar-Cost Averaging (DCA)

Dollar-cost averaging is the simple discipline of investing the same amount at regular intervals, no matter what the market is doing. Contributing to a 401(k) every paycheck is dollar-cost averaging in action. Because your fixed dollar amount buys more shares when prices are low and fewer when prices are high, your average cost per share tends to smooth out over time.

The real value of dollar-cost averaging is behavioral. It takes market timing, which almost no one does well, off the table, and it turns investing into an automatic habit rather than an emotional decision made during scary headlines. It does not guarantee a profit or protect against loss in a falling market, and investing a lump sum often wins on paper when you already have the cash, but for money arriving paycheck by paycheck, steady investing is how wealth is actually built. Our how much to invest playbook and compound interest playbook show the long-run payoff.