Dollar Cost Averaging Calculator
Simulate disciplined Dollar Cost Averaging (DCA) across bull, bear, and volatile market cycles to calculate average share purchase costs.
Dollar Cost Averaging Formulas
Shares Acquired This Month = Monthly Dollars / Current Share Price | Average Cost Per Share = Total Dollars Invested / Total Shares Acquired- DCA Mechanism: When market prices drop, your fixed monthly dollar contribution automatically buys more shares; when prices rise, you buy fewer shares.
- Average Purchase Price: Almost always lower than the average market share price due to buying more shares at local lows.
- Lump-Sum Comparison: Simulates investing 100% of the capital on Day 1.
Step-by-Step Worked Example
Calculation Steps:
How to Use This Calculator
Assumptions & Limitations
- Models systematic monthly execution without trying to time market tops or bottoms.
Frequently Asked Questions
Is Dollar Cost Averaging better than Lump Sum investing?
Historically, Vanguard research shows lump sum beats DCA about 68% of the time because markets rise long-term. However, DCA provides vital psychological protection against investing right before a sharp market correction.
Related Cost Calculators
Monthly Savings Calculator
Calculate long-term wealth accumulation from regular monthly savings deposits, tracking 5-year, 10-year, and 20-year milestones.
Investment Return Calculator
Calculate capital gains, dividend distributions, total percentage return, and annualized CAGR across any stock, ETF, or fund holding period.
Investment Growth Calculator
Forecast multi-decade portfolio growth with monthly dollar additions, comparing nominal future value against inflation-adjusted real purchasing power.
Financial Independence Calculator
Calculate your FIRE (Financial Independence, Retire Early) number based on annual spending and the 4% rule, and estimate years until work is optional.