Dollar-Cost Averaging Calculator | Predictable Income

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Dollar-Cost Averaging

Compare investing a lump sum all at once versus spreading it out across a market cycle.

Amount to Invest ($)

DCA Period 12 months

Expected Annual Return 8.0%

Market Scenario During DCA Period

Rising+20% over period

Flat / Volatileends ~0%

Falling−20% over period

DCA Outcome

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Lump Sum Outcome

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Winner in This Scenario

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Portfolio Value During DCA Period

Historically, lump sum wins about two-thirds of the time because markets trend up. DCA shines in volatile or declining markets and is often worth it for the psychological benefit alone.

Dollar-Cost Averaging Calculator

The Dollar-Cost Averaging Calculator settles one of the oldest debates in personal finance with numbers instead of opinions: is it smarter to invest a windfall all at once, or spread it out over several months to reduce timing risk? Users enter the total amount they have to invest, the DCA period, and an expected annual return, then toggle between three market scenarios during that stretch: rising, flat and volatile, or falling. The calculator simulates both strategies on the same price path, showing the final portfolio value for each approach, the average cost per share, and a clear verdict declaring which strategy won and by how much. The chart tracks both portfolios side by side through the DCA window so users can see exactly where the two paths diverge. It is the calculator that cuts through the psychological comfort of DCA and shows the honest tradeoff: lump sum usually wins when markets trend up, DCA shines when they chop sideways or fall, and for most investors the peace of mind is worth the expected cost.