Financial Word of the Day: Dollar Cost Averaging (DCA)
- Larry Jones

- Nov 14, 2025
- 2 min read

Definition of Dollar Cost Averaging
Dollar Cost Averaging (DCA) is an investing strategy where you invest a fixed amount of money at regular intervals—say, every week or every month—regardless of whether the market is up or down. Over time, this approach smooths out your purchase price and reduces the risk of buying everything at the market’s peak.
Dollar Cost Averaging In plain English
Instead of trying to “time” the market, Dollar Cost Averaging lets you spend time in the market. You’re committing to consistency, not perfection. You invest the same amount automatically, whether prices are high or low. When the market dips, your fixed investment buys more shares. When it rises, you buy fewer—but your overall average cost balances out.
Example
Let’s say you invest $500 into a mutual fund every month.
In January, the share price is $50 → you buy 10 shares.
In February, the price drops to $25 → you buy 20 shares.
In March, it rebounds to $33 → you buy about 15 shares.
After three months, you’ve invested $1,500 and bought 45 shares. Your average cost per share is $33.33—lower than the highest price you ever paid.
Why Dollar Cost Averaging Matters
Dollar Cost Averaging removes emotion from investing. Instead of panicking when the market drops or chasing “hot” trends, you stay steady. It’s one of the simplest and most effective ways to build wealth—especially for long-term goals like retirement or college savings.
It works particularly well when:
You’re investing in a volatile market.
You don’t have a lump sum to invest all at once.
You want to build wealth slowly and steadily through discipline.
This is the philosophy behind automatic 401(k) contributions, recurring stock purchases, and robo-advisor setups. You set it, forget it, and let consistency compound your wealth.
In Conversation
“I don’t stress over market swings. I just keep buying a little each month—Dollar Cost Averaging keeps me in the game.”
Pro Tip
Dollar Cost Averaging isn’t about getting the best price; it’s about avoiding the worst mistake—staying out of the market altogether. History shows that the market tends to rise over time, and those who invest regularly, regardless of headlines, usually come out ahead.
Key Takeaway
Markets rise, fall, and rise again. But the investor who invests consistently—month after month—benefits from both the dips and the recoveries. Dollar Cost Averaging isn’t flashy, but it works. It’s like financial autopilot for building long-term wealth.






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