Lump Sum vs Monthly Investment Timing Calculator
Compare the power of a one-time investment against consistent monthly contributions. This professional tool accounts for compounding frequencies and inflation to help you decide the best strategy for your financial future.
Lump Sum Total
$0.00
Monthly Total
$0.00
Inflation Adjusted
$0.00
How to Choose Between Lump Sum and Monthly Investing
Deciding how to enter the market is one of the most critical decisions for any investor. A Lump Sum investment involves putting all your available capital into the market at once. Conversely, Monthly Investing, often called Dollar-Cost Averaging (DCA), involves spreading your investment over time.
The Power of Compounding
Compound interest is the addition of interest to the principal sum of a loan or investment, or in other words, interest on interest. The formula for compounding is:
$A = P(1 + \frac{r}{n})^{nt}$
Where A is the future value, P is the principal, r is the annual interest rate, n is the compounding frequency, and t is the time in years.
Why Market Timing Matters
Market timing refers to the strategy of making buy or sell decisions by predicting future market price movements. While Lump Sum investing historically outperforms DCA because markets tend to rise over time, DCA reduces the risk of investing a large amount right before a market downturn.
Inflation: The Silent Eroder
Our calculator includes an inflation adjustment. This is vital because $10,000 today will not have the same purchasing power in 20 years. By adjusting for inflation, you see the "real value" of your wealth in today's terms.

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