Dollar Cost Averaging(DCA): Tool for Long-Term Gains

One of the most well-known investment strategies is Dollar Cost Averaging (DCA). For many investors, it is a “safe” method of obtaining better long-term returns.

Throughout the post, we will analyse its main advantages and disadvantages to determine if it is really a good alternative and what its true benefits are.

dollar cost averaging meaning

What is Dollar cost averaging?

For those not familiar with the method, DCA consists of investing in a staggered manner in the markets and not making a “one-time” contribution with all the available patrimony for the investment. Or, it could be termed as the art of making periodic contributions during the investment horizon.

The theory behind this method says that we will buy more shares or stocks over time, since when they go down, we will buy more with the same amount of money, reaching a higher final amount.

Example of dollar cost averaging

Let's see an example with the application of the DCA method:

MomentInvestmentPrice per shareShares bought
Month 1100€10€10
Month 2100€10€10
Month 3100€5€20
Month 4100€8€12.5€
Month 5100€10€10
Summary of my portfolio500€8€62.5

As we can see, by implementing the DCA method, we have managed to obtain an average price per share of 8 euros.

Now let's see what would have happened if we had invested the entire amount directly:

MomentInvestmentPrice per shareShares bought
Month 1500€10€50
Summary of my portfolio500€10€50

We can see that this way we would have had 12.5 fewer shares than through the Dollar Cost Averaging method.

If we saw the first table in a graph, it could have the following form:

dollar cost averaging

This is because, when the price falls (graph with a decreasing trend), we can buy more shares with our investment amount.

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How it works: Is DCA a good idea?

As we have seen in the previous example, the DCA method has been effective throughout the period, however, it would be ideal if we had invested in month 3, when the stocks were cheaper, thus obtaining even more shares than implementing the Dollar Cost Averaging method. It would also be ideal to have sold in month 5, when the stocks were more expensive. Unfortunately, we cannot predict the movements of the market with certainty, and therefore the probability of hitting the bottom or top of the Market is very low, or as the old adage of this world says, only liars buy at the bottom, and sell at the top.

Another scenario that could have happened is that the market continues to fall and investors sell due to panic, or vice versa, that it continues to rise from the first moment and investors buy due to excessive confidence. Despite not getting the maximum benefit at all times, DCA tries to minimize the decisions made due to our emotions. It makes us invest more rationally and, generally, makes us more stable.

Therefore, it is a good strategy because, although it limits the benefits, it also limits the losses in a certain sense. In addition, it must be taken into account that the benefit is not only monetary but also psychological. Alongside the DCA, there are other money management strategies that can help us invest with a sense of safety, thereby cutting down our losses.

How long should you do a dollar cost average?

As we know, investment funds (and stocks) are influenced by volatility, which implies that they can have quite high market fluctuations due to many reasons, for example, the launch of a new product, a financial crisis, or an inflationary period. Therefore, it is recommended to apply this method for a period of 6 to 12 months if we are investing a large amount of money. However, it can be extended for longer if our volatility and risk profile are more conservative.

Benefits and drawbacks

Next, we will show you a schematic table where all the characteristics, both positive and negative, are observed:

Lower purchase costHigher transaction costs
Reduction of risksLower expected profitability
SavingsGreater monitoring
Avoid emotional investment 
Avoid the wrong moment 


When investing, DCA can help the investor better withstand the fears of the first contributions and spread the risk when entering the market due to the liquidity management it entails. If an investor is pessimistic about the market, DCA is a better alternative, both in terms of profitability and tranquillity.

Clearly, this method has advantages and disadvantages, however, speaking from the point of view of benefit, studies show that the difference between DCA and Lump Sum is minimal. Therefore, an investor must weigh whether that differential really compensates for other variables such as risk, volatility, and psychological pain.

It should also be noted that this is one of the many strategies within the field of money and liquidity management, so its application is optional. You could also opt for others, such as Value Averaging, the 3% rule, or some other tactics.

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How does dollar cost averaging work?

DCA works by making periodic contributions to your investment portfolio, such as monthly or quarterly investments, instead of investing a large sum all at once.

Is dollar cost averaging a guaranteed way to make money?

No investment strategy is foolproof, and DCA is no exception. While it can help reduce the impact of market volatility, it does not guarantee profits. Market conditions, the performance of the chosen assets, and other factors can still affect returns.

Is dollar cost averaging the only investment strategy available?

No, there are various investment strategies beyond DCA. Some alternative strategies include Value Averaging, the 3% rule, and other tactics tailored to specific investment objectives and risk profiles.

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