How DCA Works
Suppose you invest $100/month. When the price is $50, you buy 2 shares. When it drops to $40, you buy 2.5 shares. When it rises to $60, you buy 1.67 shares. After three months ($300 total), you own 6.17 shares at an average cost of $48.62 — better than paying $60 if you had bought only at the peak.
DCA automatically buys more units when prices are low. This is not "hoping the market falls" — it is the arithmetic of accumulating more shares per dollar when prices are depressed.
Advantages and Disadvantages
Advantages: Eliminates market timing errors, reduces emotional decision-making, enforces savings discipline. You don't need to predict when markets will fall.
Disadvantages: In a persistently rising market, lump-sum investing outperforms DCA. Research shows lump sum beats DCA roughly 66% of the time because markets trend upward over the long run.
Who Is DCA Best For?
Anyone with regular income who wants to systematically build wealth. Also ideal for investors uncomfortable with deploying large lump sums — DCA provides significant psychological comfort during volatile markets.
DCA is extremely popular among crypto investors where high volatility makes market timing especially dangerous.