Wealth-Building Mechanics · Interactive Simulator

Dollar-Cost Averaging
vs. Lump Sum

Two strategies, one market — discover which wins and when

Strategy A
Dollar-Cost Averaging
Invest a fixed dollar amount at regular intervals — regardless of the market price. When prices are low, you automatically buy more shares. When prices are high, you buy fewer. Over time, this smooths your average cost per share.
Reduces timing risk — no need to predict the market
Enforces discipline through automatic, regular investing
Psychologically easier — less fear of buying at the "wrong" time
Ideal when capital is earned incrementally (salaries, bonuses)
Strategy B
Lump Sum Investing
Deploy all available capital immediately. Because markets tend to rise over time, getting money invested sooner maximizes the time it spends growing. Studies show lump sum beats DCA roughly two-thirds of the time in rising markets.
More time in the market = more time compounding
Outperforms DCA in bull markets (historically ~66% of the time)
Fewer transaction costs and decisions over time
Optimal when a large sum becomes available (inheritance, sale, bonus)
⬡ The Core Question

If you inherited $60,000 today — would you invest it all at once, or spread it over 12 months at $5,000/month? The answer depends on market conditions, your risk tolerance, and the specific return sequence. This simulator lets you explore all three scenarios.

⬡ What Research Says

Vanguard research found that in roughly 68% of historical 12-month windows, lump sum investing outperformed DCA — simply because markets rise more often than they fall. But in bear markets and volatile sideways periods, DCA often wins decisively. Context is everything.

Total Capital$60,000
DCA Installments12 months
Hold Period After DCA36 months
Expected Annual Return8.0%
Market Scenario
Market path:
Random
Strategy A
Dollar-Cost Averaging
Final portfolio value
Total invested
Total gain / loss
Return %
Avg cost per share
Shares held
Strategy B
Lump Sum
Final portfolio value
Total invested
Total gain / loss
Return %
Buy price (day 1)
Shares held
Comparison
Head-to-Head Stats
DCA LUMP SUM
Final Value
Total Return
CAGR (annualized)
Max Drawdown
Months DCA Ahead
Final Share Price
same
Difference
Portfolio Value Over Time
DCA Portfolio
Lump Sum Portfolio
Capital Deployed
Simulated Market Price Path
Asset Price ($/share)
▼ DCA buy points
Month-by-Month Breakdown
Month Share Price DCA Invested DCA Shares Bought DCA Portfolio LS Portfolio Leading