Final Value
-
Total Invested
-
Returns Earned
-
When Should You Use a DCA Calculator?
Use this calculator to plan and visualize a consistent investing strategy:
• Planning monthly contributions to your brokerage account
• Setting up automatic investments in index funds
• Understanding how time in the market builds wealth
• Motivating yourself to stay consistent with investing
How It Works
1
Set Monthly Amount
Choose how much you can invest each month consistently.
2
Pick a Return Rate
Enter expected annual returns. 10% is the historical stock market average.
3
See the Growth
View your total invested, final value, and returns earned over time.
Example
Scenario: Invest $500/month into an index fund at 10%/year for 15 years.
Calculation: Total invested = $90,000. Final value ≈ $207,000.
Result: You earn $117,000 in returns on top of your $90,000 contributions.
Frequently Asked Questions
Dollar cost averaging (DCA) means investing a fixed amount at regular intervals regardless of the price. You buy more shares when prices are low and fewer when prices are high.
Historically, lump sum investing beats DCA about 2/3 of the time because markets tend to go up. However, DCA reduces timing risk and is psychologically easier for most investors.
Monthly is most common and practical. Weekly DCA provides slightly more smoothing but the difference is minimal. The key is consistency, not frequency.
DCA actually shines in bear markets because you accumulate more shares at lower prices. When the market recovers, those cheap shares generate outsized returns.
Yes, but DCA works best with diversified index funds or ETFs. Individual stocks carry company-specific risk that diversification helps manage.
Related Tools
Quick Reference Table
| Month | Price | $500 Buys | Total Shares | Avg Cost |
|---|---|---|---|---|
| 1 | $100 | 5.00 | 5.00 | $100.00 |
| 2 | $90 | 5.56 | 10.56 | $94.70 |
| 3 | $80 | 6.25 | 16.81 | $89.23 |
| 4 | $95 | 5.26 | 22.07 | $90.62 |
| 5 | $105 | 4.76 | 26.83 | $93.18 |
Vanguard research found that lump-sum investing outperforms DCA about 68% of the time. However, DCA reduces the risk of investing at a market peak by up to 30%.