Dollar Cost Averaging (DCA) Calculator
Use this free DCA calculator to project how recurring stock or ETF investments may grow across different contribution frequencies and fee levels.
What this DCA calculator shows: enter a starting amount, recurring monthly investment, expected annual return, and time horizon to estimate total contributions, investment gains, final value, and yearly portfolio growth.
One-time starting investment amount
Fixed amount invested each period
Fund, platform, or advisory fee
Final Portfolio Value
$379,684.42
Total Amount Invested
$120,000.00
Total Returns
$259,684.42
Total Return %
216.40%
Net annual return after entered fees: 10.00%
How this dollar cost averaging calculator works
The projection compounds your initial investment and adds each recurring contribution at the end of its selected period. It uses your expected return minus annual fees; it does not backtest a particular stock or ETF.
Example: Investing $500 monthly for 20 years contributes $120,000 before any initial investment. At a 10% expected annual return and no fees, the calculator estimates the value using monthly compounding and shows the result year by year.
Year-by-Year Breakdown
| Year | Amount Invested | Portfolio Value | Gains |
|---|---|---|---|
| 1 | $6,000.00 | $6,282.78 | $282.78 |
| 2 | $12,000.00 | $13,223.46 | $1,223.46 |
| 3 | $18,000.00 | $20,890.91 | $2,890.91 |
| 4 | $24,000.00 | $29,361.25 | $5,361.25 |
| 5 | $30,000.00 | $38,718.54 | $8,718.54 |
| 6 | $36,000.00 | $49,055.66 | $13,055.66 |
| 7 | $42,000.00 | $60,475.21 | $18,475.21 |
| 8 | $48,000.00 | $73,090.54 | $25,090.54 |
| 9 | $54,000.00 | $87,026.86 | $33,026.86 |
| 10 | $60,000.00 | $102,422.49 | $42,422.49 |
| 11 | $66,000.00 | $119,430.25 | $53,430.25 |
| 12 | $72,000.00 | $138,218.94 | $66,218.94 |
| 13 | $78,000.00 | $158,975.05 | $80,975.05 |
| 14 | $84,000.00 | $181,904.60 | $97,904.60 |
| 15 | $90,000.00 | $207,235.17 | $117,235.17 |
| 16 | $96,000.00 | $235,218.19 | $139,218.19 |
| 17 | $102,000.00 | $266,131.39 | $164,131.39 |
| 18 | $108,000.00 | $300,281.61 | $192,281.61 |
| 19 | $114,000.00 | $338,007.80 | $224,007.80 |
| 20 | $120,000.00 | $379,684.42 | $259,684.42 |
How It Works
- 1Enter your initial lump-sum investment amount (can be $0 if starting from scratch).
- 2Set your recurring contribution and choose how often you plan to invest.
- 3Specify your expected annual return based on historical market averages or your own estimate.
- 4Enter any annual fund or platform fee to see its effect on projected returns.
- 5Choose your investment time horizon in years to see long-term compounding effects.
- 6Review the projected portfolio value, total returns, and year-by-year breakdown to plan your strategy.
Frequently Asked Questions
What is Dollar Cost Averaging (DCA)?
Dollar Cost Averaging 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 by buying more shares when prices are low and fewer when prices are high, resulting in a lower average cost per share over time.
What annual return should I expect?
The S&P 500 has historically returned about 10% annually before inflation (roughly 7% after inflation). However, returns vary significantly year to year. A conservative estimate of 7-8% is reasonable for long-term planning with a diversified stock portfolio. Bond-heavy portfolios may return 4-6%.
Is DCA better than investing a lump sum?
Statistically, lump-sum investing outperforms DCA about two-thirds of the time because markets tend to rise over time. However, DCA reduces the risk of investing a large amount at a market peak and is psychologically easier for most investors. DCA is also the natural approach for people investing from regular income.
How does compounding affect my DCA returns?
Compounding means your investment gains generate their own returns over time. With DCA, earlier contributions have more time to compound, which is why starting early matters so much. For example, $500/month at 10% annual return grows to about $380,000 in 20 years, but roughly $1,130,000 in 30 years — nearly 3x more in just 10 additional years.
Can I calculate weekly or biweekly DCA investments?
Yes. Choose weekly, biweekly, monthly, quarterly, or annual contributions. The calculator compounds at the same frequency and assumes each recurring contribution is made at the end of the period.
How are fees included in the DCA projection?
The annual fee is subtracted from the expected annual return before periodic compounding. For example, a 10% expected return with a 0.25% annual fee is projected using a 9.75% net annual return.
Does this calculator account for inflation?
This calculator shows nominal (before-inflation) returns. To estimate real (after-inflation) returns, subtract the expected inflation rate (historically about 2-3%) from your expected annual return. For example, use 7% instead of 10% to see inflation-adjusted projections.
