Dollar-Cost Averaging
Dollar-cost averaging (DCA) is a strategy of investing a fixed amount at regular intervals, for example every week or month, regardless of the current market price.
How DCA works
Instead of deciding when to buy, you decide how much and how often, and then stick to the schedule. Because the amount stays fixed, you automatically buy more units when the price is low and fewer when it is high. Over time your average purchase price reflects the whole period rather than a single moment.
Many exchanges and brokers offer recurring buys that automate this, so the purchase happens without you having to watch the market.
A worked example
Say you invest 100 dollars per month into a coin for three months. In month one the price is 50, so you get 2 coins. In month two it drops to 25, so you get 4 coins. In month three it is back at 50, so you get 2 coins. You spent 300 dollars for 8 coins, an average cost of 37.50, lower than the simple average price of about 41.67, because the fixed amount bought more when the price was low.
Why people use it
DCA removes the pressure of picking the perfect entry point, which nobody can do consistently. It fits regular income, such as investing part of each salary, and it can reduce regret and panic, because a falling price simply means the next purchase buys more.
Limits and common mistakes
DCA does not prevent losses. If an asset declines for years or goes to zero, buying it regularly still loses money. It also does not guarantee a better result than investing everything at once: when prices rise over the period, money that waits on the sidelines misses part of the rise.
Fees matter too. Many small purchases with a fixed minimum fee can cost noticeably more than one large purchase. And the method only works if you actually keep going, including during the downturns when stopping feels tempting.
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Frequently asked questions
Is DCA better than investing a lump sum?
Neither wins in every market. A lump sum gets full exposure earlier, which helps in rising markets, while DCA spreads the entry and reduces the impact of buying right before a drop.
What interval is best for DCA?
Weekly and monthly plans are most common. The interval matters less than consistency and keeping fees low relative to each purchase.
Does DCA work in a bear market?
It keeps buying at lower prices, which lowers your average cost, but the result still depends on whether the asset eventually recovers. It does not protect against an asset that never does.
Related terms
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