The strategy that removes market timing from investing.
Market timing is difficult. Dollar-cost averaging makes it irrelevant. By investing a fixed amount regularly, you automatically buy more when prices are low.
The Situation
Dollar-cost averaging (DCA) means investing a fixed amount at regular intervals — regardless of market conditions. When prices are high, your fixed amount buys fewer shares. When prices are low, it buys more. Over time, this naturally produces a purchase price lower than the simple average of prices during the period.
The market's volatility — usually seen as the enemy — is what makes dollar-cost averaging work in your favor.
— Worthune Decision Framework
Understanding DCA · Steps 1 & 2
Example: $500/month invested over 4 months at prices of $100, $80, $60, $80 buys 5, 6.25, 8.33, and 6.25 shares respectively — 25.83 total shares at a $77.43 average cost, versus $80 simple average price. The lower prices automatically receive a larger allocation.
The math works automaticallyLump sum investing outperforms DCA approximately 2 out of 3 times in historical data — because markets trend upward. But DCA reduces the risk and regret of a poorly-timed large investment. For regular income investors, DCA is the natural approach.
Lump sum vs DCA depends on contextImplementing DCA · Steps 3 & 4
The power of DCA comes from the fixed amount and the regular schedule — not from any specific timing. Set a contribution amount and a date (e.g., the 1st of every month or the day of your paycheck), then automate it.
Fixed amount, fixed dateThe months when DCA feels most uncomfortable — when markets are falling and every contribution seems to buy into a declining asset — are precisely when DCA is working hardest. Pausing DCA during declines defeats its primary advantage.
Declines are when DCA works bestLump Sum Application · Steps 5 & 6
If you have a large amount to invest (bonus, inheritance, sale proceeds), investing it in equal monthly installments over 6–12 months reduces the risk of a poorly-timed single entry — at the cost of some expected return if markets rise during the period.
6–12 month DCA for lump sumsDCA is a strategy, not a deferral mechanism. A fixed schedule starting today is DCA. 'I'll invest gradually when conditions improve' is not — it's timing. The date must be set before the investment begins.
DCA requires a start dateAfter the Work
After reviewing your investment approach:
DCA is active. You're buying at all prices. Resist any impulse to pause during declines.
A 6–12 month systematic entry plan reduces timing risk. Set the schedule and automate it.
Convert to a fixed automatic contribution. The regularity matters as much as the amount.
Regular, automated, fixed contributions are DCA. Most investors already have this — without knowing it has a name.
Next Step
Use Worthune's dollar-cost averaging planner to set your contribution schedule, simulate the long-term impact, and see how DCA reduces timing risk.
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