Dollar Cost Averaging

Dollar Cost Averaging (DCA)

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One of the most tried-and-true investment strategies that have become a staple of investing due to its simplicity and effectiveness is Dollar Cost Averaging (DCA).

This article will provide a comprehensive overview of dollar cost averaging, explaining what it is, its history, benefits, limitations, and how to implement it in your investment strategy. We’ll also share a real-life example and answer frequently asked questions about dollar cost averaging.

Understanding Dollar Cost Averaging

What is Dollar Cost Averaging?

Dollar-cost averaging (DCA) is an investment strategy that involves investing a fixed amount of money at regular intervals, regardless of market conditions. By dividing the total amount to be invested across multiple purchases, investors can reduce the impact of market volatility on their investment and minimize the risk of making a single large purchase at a potentially disadvantageous time.

For example, let’s say you decide to invest $500 every month in a mutual fund. If the price of the fund is high one month, you will buy fewer shares, and if the price is low, you will buy more shares. Over time, this can help you build a portfolio that is less affected by short-term market volatility.

This strategy is often used by long-term investors who want to build a diversified portfolio while mitigating the risk of short-term market fluctuations.

The History of Dollar Cost Averaging

The concept of Dollar Cost Averaging dates back to the early 20th century, but it gained traction as a legitimate investing strategy in the 1950s with the rise of mutual funds. Since then, it has become an increasingly popular tool for both individual and institutional investors looking to manage risk and cultivate long-term financial success.

One of the earliest proponents of Dollar Cost Averaging was Benjamin Graham, a legendary investor, and mentor to Warren Buffett. Graham believed that a systematic investment plan was a sound strategy for building long-term wealth.

Today, dollar cost averaging remains a widely-endorsed tactic by financial advisors and investment professionals, especially for individuals looking to build long-term wealth without constantly monitoring stock prices and market trends.

Benefits of Dollar Cost Averaging

There are several key benefits to dollar cost averaging that make it an attractive option for investors:

  1. Reduced risk: By investing smaller amounts over time, you reduce the impact of the market’s fluctuations on your portfolio. This can help you avoid the common pitfall of buying high and selling low.
  2. Discipline: Dollar cost averaging encourages consistent, disciplined investing, rather than attempting to time the market or make impulsive decisions based on short-term market movements.
  3. Accessibility: DCA is a simple and straightforward strategy, making it accessible to investors of all experience levels. Additionally, most investment platforms offer automatic investment plans that facilitate dollar cost averaging.
  4. Avoid emotional investing: Spreading investments over time helps avoid the common pitfall of making emotional investment decisions based on market highs or lows. This can help you stay focused on your long-term goals and avoid reacting to short-term market fluctuations.
  5. Flexibility: Investors can adjust the frequency or amount of their DCA contributions as needed to suit their financial goals and market conditions.
  6. Simplicity: DCA is a straightforward strategy that can be easily implemented by anyone, even those new to investing. This can help you get started on your investment journey with confidence.

Another advantage of DCA is that it can help investors build a diversified portfolio. By investing in a variety of assets over time, investors can spread their risk and potentially earn higher returns than they would with a single investment.

Limitations of Dollar Cost Averaging

While dollar cost averaging offers many advantages, it also has some limitations:

  1. Missed opportunities: By spreading investments over time, investors may miss out on potential gains or experience lower long-term returns compared to lump-sum investing.
  2. Conservative approach: DCA may result in lower returns for those with a higher risk tolerance who are willing to take on more risk in their investments. However, it can be a good strategy for those who are more risk-averse or who are just starting out with investing.
  3. Slow wealth accumulation: The gradual nature of DCA can lead to slower portfolio growth compared to more aggressive investment strategies. However, it can still be an effective strategy for building long-term wealth and managing risk.
  4. Not a panacea: DCA is not a failsafe method for building wealth or avoiding market volatility. It is still essential for investors to maintain a diversified portfolio and closely monitor their investments.

It’s also worth noting that dollar cost averaging is not a one-size-fits-all solution. Depending on an investor’s financial goals and risk tolerance, other investment strategies may be more appropriate.

Overall, Dollar Cost Averaging can be a valuable strategy for most investors looking to build a diversified and balanced investment portfolio over time. By investing a fixed amount consistently, you can help manage risk and avoid the common pitfalls of emotional investing and market timing.

How Dollar Cost Averaging Works

Dollar Cost Averaging (DCA) is an investment strategy that involves investing a fixed amount of money at regular intervals, usually monthly or quarterly, regardless of market conditions. When the interval arrives, the investor uses that predetermined amount to buy shares of an investment, such as stocks or mutual funds, at the current market price.

Because the investment amount is fixed, the investor will purchase more shares when prices are low and fewer shares when prices are high, effectively averaging the cost of investment over time.

The goal of DCA is to reduce the impact of market volatility on your long-term investment over time.

Take a look at the chart below, which gives a hypothetical example of a $100 monthly investment (in orange) over eight months vs. a one-time, $8,000 lump-sum investment (blue):

DCA 8 month chart

Dollar Cost Averaging vs. Lump Sum Investing

Dollar cost averaging is often contrasted with lump sum investing, which involves investing a sizable sum of money all at once. While lump sum investing can potentially result in higher returns if the investment’s value increases shortly after the purchase, it also carries the risk of investing at a market peak or just before a downturn, leading to losses.

By contrast, dollar cost averaging is a more conservative approach that prioritizes risk reduction and long-term wealth accumulation. It sacrifices the potential for high short-term gains in favor of the likelihood of success over the long haul.

For example, suppose a hypothetical investor decides to invest $100 per month in an ETF.

  • In the first month, the ETF’s price is $10 per share, so the investor buys 10 shares.
  • In the second month, the price rises to $15 per share, so the investor buys 6.67 shares for the same $100.
  • In the third month, the share price drops to $5 per share, so the investor buys 20 shares with another $100.

Over the three-month period, the investor has invested $300 and purchased a total of 36.67 shares, with an average cost per share of $8.18.

If the lump-sum investor purchased $300 in shares in the first month, they would have a total of 30 shares, with an average purchase price of $10.

After the second monthly contribution, the lump-sum investing strategy seems to pay off; the investor has an average share price of only $10, while the DCA investor’s average price is $11.99. But after the third month, the price drops to $5, keeping the large-sum investor’s average at $10, but bringing the DCA investor’s down to $8.18, resulting in a lower average price.

Dollar Cost Averaging in Different Market Conditions

Dollar cost averaging can be beneficial in various market environments:

  • Bull markets: In an upward-trending market, dollar cost averaging can lead to a steady accumulation of assets and long-term growth, even if short-term gains are not as substantial as with lump-sum investing. This approach can help investors avoid the temptation to try to time the financial markets and instead stick to a disciplined investment plan.
  • Bear markets: When the stock market declines, dollar cost averaging can help investors manage risk and take advantage of lower asset prices over time. By investing fixed amounts at regular intervals, investors can potentially accumulate more shares at lower prices, which can lead to higher returns when the market eventually rebounds.
  • Volatile markets: During periods of high market volatility, dollar cost averaging can be a more measured approach, smoothing out the impact of price fluctuations and reducing the likelihood of purchasing at extreme highs or lows. This approach can help investors avoid making emotional investment decisions and instead stick to a disciplined investment plan.

Overall, dollar cost averaging can be a useful, conservative investment strategy for investors who prioritize risk reduction and long-term wealth accumulation.

Implementing Dollar Cost Averaging in Your Investment Strategy

There are several considerations when starting a dollar cost averaging approach.

Choosing the Right Investment Vehicle

Before implementing dollar cost averaging, it’s crucial to select the appropriate investment vehicle. While there are many options available, investors should consider factors such as diversification potential, risk tolerance, investment objectives, fees and costs, performance history, and market conditions.

  • Individual stocks can be a good choice for investors who are looking for high returns, but the stock market can also be risky.
  • Index funds and ETFs offer diversification and lower fees, making them a good choice for investors who want to minimize their risk.
  • Mutual funds and target-date funds are also popular investment vehicles that can be used with the DCA strategy.
  • Robo advisors are a great choice for DCA, as they automatically diversify your portfolio and have tools that help you invest regularly, minimize taxes, and take a hands-off approach.

Setting Up a Dollar Cost Averaging Plan

Once the investment vehicle has been selected, setting up a DCA plan typically involves the following steps:

  1. Determine the fixed amount to invest: Investors should decide on a consistent amount of money to invest at each interval, keeping in mind their financial goals, risk tolerance, and timeline. For example, an investor may choose to invest $100 per month.
  2. Choose the investment interval: This could be monthly, quarterly, or another suitable timeframe. Many experts recommend investing at least monthly to take full advantage of DCA’s benefits.
  3. Create an automatic investment plan: Most investment platforms, including robo advisors, offer the option to set up automatic contributions, allowing investors to automate the DCA process and avoid the potential for emotional or impulsive decisions. This can be an excellent way to ensure that the investor sticks to their investment plan and avoids the temptation to make changes based on short-term market fluctuations.

Adjusting Your Dollar Cost Averaging Strategy Over Time

As investment goals, risk tolerance, and market conditions change over time, it may become necessary to adjust your DCA strategy. Investors may wish to modify their contribution amounts, investment intervals, or even the specific investments they’re using dollar cost averaging to purchase.

Periodically reviewing and adjusting a DCA plan can help ensure it remains aligned with the investor’s overall financial objectives and market trends.

Dollar Cost Averaging in Practice: Real-Life Example

Many investors have found success using the DCA strategy.

One notable example is the story of Ronald Read, a former gas station attendant and janitor who amassed an investment portfolio worth over $8 million using DCA. Through consistent and disciplined investing in blue-chip stocks, Read was able to maximize the long-term growth potential of his investments by minimizing the impact of market fluctuations on his portfolio.

Frequently Asked Questions About Dollar Cost Averaging

Is Dollar Cost Averaging Right for Everyone?

While dollar cost averaging is a popular and widely recommended strategy, it may not be suitable for all investors. Factors such as risk tolerance, investment goals, timelines, and financial circumstances will dictate whether DCA is the right approach.

How Often Should I Invest Using Dollar Cost Averaging?

Most experts recommend investing at least monthly to avoid dramatic price swings and to maximize the benefits of the cost-average effect. Still, some investors may choose to invest quarterly or on another schedule that aligns with their income and financial objectives. The important thing is to stick to your fixed schedule, even if it means investing smaller sums.

Can I Use Dollar Cost Averaging for Retirement Planning?

Yes, dollar cost averaging is an excellent strategy for retirement planning. By investing regularly in a diversified portfolio of assets over a long-time horizon, investors can build wealth while managing risk. Many workplace retirement plans, such as 401(k) plans, inherently dollar cost average, as the same amount is typically contributed from each paycheck on a regular basis.

Is Dollar Cost Averaging Good for Crypto?

Yes, just like any other investment, cryptocurrency suffers up and down markets, so dollar cost averaging works to help mitigate risk with crypto market fluctuations.


Dollar-cost averaging is a popular and widely-endorsed investment strategy that can help investors grow long-term wealth, manage risk, and achieve long-term financial goals. By understanding the ins and outs of DCA and implementing it thoughtfully, investors can develop a more disciplined and successful investment approach.

Disclaimer: Investing involves risk. Stock prices fluctuate, the market dips and peaks, and interest rates fluctuate wildly. Past performance is no guarantee of future results. The opinions expressed on this page are exactly that: opinions, and should not be taken as investment advice. There are potential risks with any investment strategy.