See what steady investing builds over time
Dollar Cost Averaging Calculator
Enter a starting amount, a regular contribution, an assumed annual return, and how many years you plan to keep investing. Results update as you type.
How The DCA Investment Calculator (Dollar Cost Averaging) Works
The DCA investment calculator stands for "Dollar Cost Averaging". Dollar cost averaging means investing a fixed amount on a regular schedule, regardless of whether the market is up or down that week. Instead of trying to guess the perfect moment to buy, you buy consistently and let time do most all of the work. This dollar cost averaging calculator shows you two numbers side by side: how much money you put in over the years, and how much of your final balance came from growth on top of that. Seeing the split matters. A lot of people underestimate just how much of a long term portfolio comes from compounding rather than the deposits themselves.
The math behind this stock investment calculator is straightforward. Your starting amount grows at your assumed monthly rate for the full time horizon, and each monthly contribution grows for whatever time remains after it goes in. Add those two pieces together and you get your projected final portfolio value. It is the same future value formula used in most retirement planning software. Only with this calculator, there is no sign up wall in your way.
Here is what that looks like using the numbers already filled into the calculator above. Start with five thousand dollars, add three hundred dollars every month, assume a seven percent average annual return, and keep going for fifteen years. By the end you will have put in fifty nine thousand dollars out of pocket, yet the projected portfolio value comes out well past one hundred thousand dollars. That gap between what you contributed, and what you end up with, is compounding doing the real work. It's not using a lucky guess about market timing. Try changing any one input, the starting amount, the monthly contribution, the assumed return, or the number of years, and watch how much the final number moves. Some inputs matter a lot more than others, and seeing that for yourself is more useful than being told it in the abstract.
A Few Things Worth Knowing
The Return Rate Is An Assumption
Nobody can tell you what the market will return over the next fifteen years. A common starting point is the long run historical average for a diversified stock index, but your actual results will differ. Try a few different rates to see for yourself how sensitive the outcome is.
This Ignores Fees And Taxes
Expense ratios, trading costs, and taxes on dividends or gains all chip away at returns. This calculator keeps things simple and shows gross growth. Your actual account balance will run somewhat lower once those costs are factored in.
Lump Sum Versus Dollar Cost Averaging
Investing everything at once historically outperforms spreading it out, simply because markets rise more often than they fall. However, most people are not sitting on a lump sum. They are working from a paycheck, which makes dollar cost averaging less a strategy choice and more a description of how regular saving works in practice. If you do come into a windfall, this calculator can still help you compare steady monthly investing from that point forward against putting it all in on day one.
More Free Investor Tools
This dollar cost averaging calculator is one of four free investor tools on ProfitingStocks.com. Head back to the investment return calculator to check how a past investment performed, try the dividend income calculator to see what your holdings could pay you, or use the passive income calculator to work backward from the retirement number you want.