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Dollar-cost averaging: the boring strategy that works

Buy a fixed amount on a fixed schedule and ignore the noise. How DCA works, when it fails, and what to look at before you start.

· 3 min read

Dollar-cost averaging through a cyclePrice falls by half then recovers. Monthly buys of the same amount pull the average cost well below the starting price. Price Avg. cost ● = one fixed monthly buy
Buying the same dollar amount each month buys more coins when price is low, pulling the average cost down. Illustration with simulated prices.

Key takeaways

  • DCA replaces timing the market with a fixed schedule, which removes most emotional decisions.
  • It only works on assets you would hold for years; it cannot rescue a coin that goes to zero.
  • Check fees per buy and write an exit or rebalancing rule before you start.
In this article
  1. How it works
  2. What to check before you start
  3. What to check while it runs

Dollar-cost averaging, or DCA, means buying a fixed amount of a coin on a fixed schedule, say $50 every Monday, whatever the price is. It swaps the question “is now a good time?” for “am I still buying on schedule?”

How it works

When the price is high, your fixed amount buys fewer coins. When it is low, it buys more. Over months your average cost evens out and you never have to call the bottom. You give up the chance of buying the exact low in exchange for never having to try.

The catch is that DCA is only as good as the asset. It smooths your entry into something that goes up over your holding period. It does not rescue you from something that goes to zero. Averaging into a coin for three years while it falls 95% is still a 95% loss on the early buys.

Where it shines

  • No chart reading or timing needed.
  • Takes most emotion out of buying.
  • Easy to automate.

Where it struggles

  • Keeps buying through a long bear market.
  • Fees hurt small, frequent buys.
  • Needs the asset to recover within your timeframe.

What to check before you start

  1. Would you hold this asset for five years? DCA is a long-term strategy. Most people who use it in crypto stick to Bitcoin and Ethereum because they have the longest track records and deepest markets. If you would not be comfortable holding a coin through a 70% drawdown, do not DCA into it.
  2. Is the money truly spare? Use money you will not need for at least three to five years. The worst outcome for a DCA plan is being forced to sell in a bear market to pay rent.
  3. What does each buy cost in fees? Some exchanges charge 1.5% or more for small recurring buys through their simple “buy” button, while the same exchange's trading screen charges a fraction of that. On $25 weekly buys, fees can quietly eat several percent a year.
  4. Weekly or monthly? Studies of past crypto prices show the schedule makes little difference to your average cost. Pick whatever matches your pay cycle and keeps fees low. The important part is not changing it.
  5. Where will the coins live? Decide whether you will keep them on the exchange or move them to your own wallet every few months. Both are reasonable; what matters is having a plan before the balance gets large.
  6. When will you sell? Most DCA plans have no exit, which means the exit gets decided in a panic or a mania. Write down a rule now: a target date, a goal amount, or a maximum share of your savings above which you rebalance.

What to check while it runs

Once a month, check three things: that every buy actually went through, that you have not paused it because of a scary headline, and that crypto has not grown into a bigger share of your savings than you planned. The second one is the one that matters. DCA works because it buys during the frightening months.

A variation: value averaging. Some investors buy more when price is below a long-term average, such as the 200-week moving average, and less when it is well above it. It adds a little timing back in, so write the rule down before you start and do not adjust it mid-cycle.

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