Dollar-Cost Averaging Calculator – Investment Growth
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Dollar-Cost Averaging Calculator

Estimate how regular investments could grow over time. Enter your starting investment, recurring contribution, investment frequency, expected return, and time horizon to see your projected portfolio value.

Enter Your Investment Plan

Add your initial investment, recurring amount, frequency, return assumption, and investment period.

$
Amount invested before recurring contributions begin.
$
Amount added during each contribution period.
%
Assumed annual investment return.
years
Number of years you plan to continue investing.

What Is a Dollar-Cost Averaging Calculator?

A Dollar-Cost Averaging Calculator estimates how an investment may grow when you contribute a fixed amount at regular intervals.

Instead of investing all available money at one time, dollar-cost averaging spreads contributions across multiple investment periods.

This calculator combines your starting investment, recurring contributions, investment frequency, assumed return, and time horizon to estimate your future portfolio value.

How the Dollar-Cost Averaging Calculator Works

1

Enter Your Starting Amount

Add any money that is already invested before recurring contributions begin.

2

Set Regular Contributions

Choose how much you will invest and how frequently contributions are made.

3

View Projected Growth

See total contributions, estimated growth, contribution count, and future portfolio value.

Future Value of Initial Investment

Future Value = Initial Investment × (1 + Periodic Return)Number of Periods

Future Value of Regular Contributions

Contribution Future Value = Contribution × ((1 + r)n − 1) ÷ r

Here, r is the return per contribution period and n is the total number of recurring investment periods.

When contributions are made at the beginning of each period, the calculator gives each contribution one additional period of modeled growth.

Dollar-Cost Averaging Example

Suppose you begin with $5,000 and invest $500 every month for 10 years.

Initial Investment: $5,000

Monthly Investment: $500

Investment Period: 10 years

Expected Annual Return: 7%

Number of Monthly Contributions: 120

Your total cash contributions would be your initial $5,000 plus 120 monthly investments. The calculator then estimates how both the initial amount and each recurring contribution may grow over time.

Why Investors Use Dollar-Cost Averaging

Consistent Investing

Dollar-cost averaging creates a regular investment schedule rather than requiring you to decide when the market is at the perfect entry point.

Investing at Different Prices

When a fixed dollar amount is invested regularly, that amount may buy more units when prices are lower and fewer units when prices are higher.

Long-Term Habit Building

Regular contributions can make investing part of a recurring savings routine and may make long-term financial goals easier to plan.

Market Risk Still Exists

Dollar-cost averaging does not prevent losses. Investments can decline in value, and actual returns may differ significantly from a constant annual return assumption.

Dollar-Cost Averaging vs. Lump-Sum Investing

Dollar-cost averaging invests money gradually over time, while lump-sum investing places a larger amount into the market at once.

With dollar-cost averaging, later contributions have less time to grow because they enter the investment at different points during the selected period.

Lump-sum investing gives the full amount exposure to market returns immediately, but it also means the entire amount is exposed to market movements from the start.

Important: This calculator uses a constant assumed investment return for mathematical estimation. Actual markets fluctuate and investment returns are not guaranteed. Taxes, investment fees, trading costs, dividends, and sequence of returns are not modeled. This tool is for informational purposes and is not investment or financial advice.

Dollar-Cost Averaging Calculator FAQs

Dollar-cost averaging is an investment approach where you invest a fixed amount at regular intervals instead of investing the entire amount at one time. The amount invested remains consistent while the number of shares purchased can vary with market prices.
The calculator combines your initial investment with recurring contributions and applies an assumed annual return over your selected period. It estimates total contributions, investment growth, and ending portfolio value.
Yes. You can select weekly, every two weeks, monthly, quarterly, or annual contributions. The calculator adjusts the number of contribution periods and investment growth accordingly.
Yes. Contributions made at the beginning of each period have slightly more time to earn investment returns than contributions made at the end of each period.
No. Dollar-cost averaging does not eliminate investment risk or guarantee positive returns. Investment values can rise or fall, and actual market performance may differ significantly from the assumed return entered in the calculator.
No. This calculator focuses on contributions and an assumed investment return. Taxes, trading costs, fund expenses, management fees, and market volatility may affect actual results.