maratoolHow to model dollar-cost averaging returns
Set contribution amount, frequency, and price path — see average cost and shares accumulated.
Dollar-cost averaging spreads purchases over time instead of timing the market. The DCA Calculator shows how recurring buys affect average share cost and total invested.
How it works
- Contribution — amount invested each period.
- Frequency — weekly, monthly, or custom intervals.
- Price series — enter or simulate share prices per period.
Why DCA matters
Buying fixed dollar amounts buys more shares when prices are low and fewer when high — smoothing entry over volatility.
Cost basis
For lump-sum lots, use the Stock Average Price Calculator instead.