Dollar-cost averaging (DCA)
Also called: DCA · recurring buy · auto-invest
Definition
Dollar-cost averaging (DCA) is a strategy of buying a fixed amount of an asset at regular intervals, regardless of price, to spread your entry over time.
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How Dollar-cost averaging works
Instead of trying to pick the perfect moment, you invest the same amount on a schedule, for example 100 USDT every week. When the price is low, that amount buys more coins. When the price is high, it buys fewer. Over time your average cost per coin is smoothed out.
DCA reduces the risk of putting everything in right before a big drop, and it removes much of the stress of timing the market. Many exchanges offer recurring buy or auto-invest features that do this automatically, usually on the spot market.
DCA does not guarantee a profit. If the asset keeps falling for years, you still lose money. In a steadily rising market, a single lump-sum purchase at the start would usually have done better. Fees also matter: very small, frequent purchases can lose a noticeable share to trading fees or spreads, so check the cost of the recurring buy feature you use.
Example
Suppose you invest 200 USDT in BTC on the first day of four months. Prices are 50,000, 40,000, 50,000 and 62,500 USDT. You buy 0.004, 0.005, 0.004 and 0.0032 BTC, for a total of 0.0162 BTC for 800 USDT. Your average cost is 800 ÷ 0.0162 ≈ 49,383 USDT, lower than the simple average of the four prices (50,625) because the fixed amount bought more when the price was low.
Common mistakes
- Believing DCA removes risk entirely, when a long decline still produces losses.
- Stopping the plan during a downturn, which is exactly when DCA buys the most coins.
- Using tiny daily buys where fees take a large share of each purchase.
Learn and practise
FAQ
Is DCA better than investing a lump sum?
Not always. A lump sum often does better in a rising market, while DCA reduces the damage from bad timing. Many people choose DCA because it is easier to stick with.
How often should I DCA into crypto?
Weekly or monthly schedules are common. Pick an interval and amount you can keep up comfortably, and check that fees stay small relative to each purchase.