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DCA vs lump-sum

Dollar-Cost Averaging vs Lump-Sum Investing

You just got a $100K bonus. Invest it all today or spread it over 12 months?

Verdict

Statistically, lump-sum wins about 67% of the time because markets trend up. Behaviorally, DCA wins for nervous investors who would otherwise sit in cash. The worst choice is delaying the decision.

Side-by-side comparison

 Dollar-Cost AveragingLump-Sum
Expected return advantage-1.5% on average+1.5% on average
Risk of buying the topLowerHigher
Win rate (Vanguard study)~33%~67%
Best when marketVolatile / near all-time highsTrending up
Behavioral fitRisk-averse investorsConfident long-term investors

Who should pick Dollar-Cost Averaging

Anyone who would otherwise not invest at all out of fear. Investors near retirement who can’t afford a 30% drawdown right after lump-summing. Anyone with no emotional buffer for a bad month.

Who should pick Lump-Sum

Investors with a 10+ year horizon who can stomach volatility. Math-driven decision makers willing to accept the higher expected return. Anyone whose alternative is keeping the money in a 4% HYSA.

Related tools

Compound Interest CalculatorModel 30 years either way.Lump Sum Investment CalculatorDirect lump-sum simulation.Recurring Investment CalculatorModel the DCA path.

Disclaimer. Comparison numbers depend on your tax bracket, state, and time horizon. Educational only — not personalized financial advice. See our Financial Disclaimer.

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