DCA Calculator
Calculate how dollar cost averaging grows your investment over time with regular contributions.
Investment Plan
Initial Investment (Optional)
$
Starting amount before regular contributions
Regular Contribution Amount
$
Contribution Frequency
▼
Expected Annual Return
%
S&P 500 historical average: ~10%
Investment Period
years
DCA Results
$0
Final Portfolio Value
After 10 years of consistent investing
⚠ Based on constant annual return. Actual markets fluctuate.
Total Invested
$0
Total Earnings
$0
Total Return
0%
# of Contributions
0
Portfolio Growth by Year
Total Invested
Investment Gains
Invested vs Portfolio Value Over Time
Year 0
Year 5
Year 10
Amount Invested
Portfolio Value
Average Cost Per Contribution
$0
Annual Contribution Total
$0
Earnings as % of Invested
0%
What is Dollar Cost Averaging?
Dollar Cost Averaging (DCA) is an investment strategy where you invest a fixed amount of money at regular intervals, regardless of the asset’s price. This approach reduces the impact of volatility on your overall purchase.
Total Shares = Σ (Contribution ÷ Price at each period)
Average Cost = Total Invested ÷ Total Shares
Average Cost = Total Invested ÷ Total Shares
When prices are high, you buy fewer shares. When prices are low, you buy more shares. Over time, this tends to lower your average cost per share.
DCA vs Lump Sum Investing
Studies show that lump sum investing outperforms DCA about 2/3 of the time in rising markets. However, DCA offers key psychological and practical benefits:
Factor
DCA
Lump Sum
Market Timing Risk
Lower
Higher
Emotional Stress
Lower
Higher
Expected Return
Slightly Lower
Slightly Higher
Best For
Regular Income
Windfall/Bonus
Power of Consistency
The real power of DCA comes from making investing a habit. Here’s what $500/month at 8% annual return grows to:
Years
Invested
Value
Gain
5 years
$30,000
$36,738
+22%
10 years
$60,000
$91,473
+52%
20 years
$120,000
$294,510
+145%
30 years
$180,000
$745,180
+314%
Tips for Successful DCA
- Automate your investments: Set up automatic transfers to remove emotion and ensure consistency.
- Choose low-cost index funds: Minimize fees to maximize compound growth over time.
- Stay the course: Continue investing during market downturns—that’s when you buy more shares cheaply.
- Increase contributions over time: As your income grows, boost your regular investment amount.
- Reinvest dividends: Enable DRIP to compound your returns automatically.
Important Considerations
- Returns aren’t guaranteed: This calculator assumes a steady return rate. Real markets fluctuate significantly.
- Fees matter: Transaction fees can erode returns, especially with frequent small investments.
- Tax implications: Consider tax-advantaged accounts (401k, IRA) for your DCA strategy.
- Emergency fund first: Ensure you have 3-6 months of expenses saved before committing to regular investments.