Question 1

What is dollar-cost averaging (DCA)?

Accepted Answer

Dollar-cost averaging is an investment strategy where you invest a fixed amount of money at regular intervals (e.g., monthly) rather than investing the entire sum at once. This reduces the impact of market volatility and avoids the risk of investing at a market peak.

Question 2

When does lump sum investing win?

Accepted Answer

Lump sum investing typically wins when markets trend upward over the long term. Since the entire amount is invested immediately, it benefits from the full period of compound growth. Historical data shows lump sum outperforms DCA roughly 60-70% of the time in bull markets.

Question 3

When does DCA make more sense?

Accepted Answer

DCA is particularly valuable when markets are volatile, overvalued, or expected to decline. It also offers psychological benefits — it reduces regret from investing a lump sum right before a market crash. DCA can be especially useful for risk-averse investors or those with a large windfall.

Question 4

How does the market dip in year 1 affect DCA?

Accepted Answer

The dip parameter simulates a market decline in the first year of DCA investing. During a dip, your early monthly investments lose value temporarily. However, these same investments also benefit from lower entry prices, which can amplify gains during the subsequent recovery if the market rebounds.

Question 5

What is the difference between DCA and value averaging?

Accepted Answer

DCA invests a fixed dollar amount each period regardless of market conditions. Value averaging adjusts the investment amount to maintain a target portfolio growth rate — investing more when prices are low and less when prices are high. Value averaging can theoretically produce better returns but requires more active management.

Question 6

Is this calculator accurate for real-world investing?

Accepted Answer

This calculator provides educational estimates. Real-world results depend on exact market timing, actual returns, transaction costs, taxes, and the specific sequence of returns. It assumes a constant annual return rate, which does not reflect actual market volatility or the order of returns, also known as sequence-of-returns risk.

Saisie	Valeur
Montant total investi ($)	$100,000
Période (années)	10
Rendement annuel attendu (%)	8%
Baisse du marché en année 1 pour le DCA (%)	-10%

Résultat	Valeur
Winner	Winner: Lump Sum wins by $67,860
Valeur finale de l'investissement en une fois	$215,892
Valeur finale du DCA	$148,032
Différence	$67,860
Avantage du DCA	-31.43%

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DCA vs investissement en une fois

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DCA vs investissement en une fois

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