Dividend Reinvestment (DRIP) Calculator

What this calculator does

This calculator projects what a dividend-paying holding becomes when every payment is reinvested rather than spent. It combines dividend yield and price appreciation into a total return, applies it to your starting amount and any regular additions, and returns the final value, the total you contributed, and the growth generated along the way.

The distinction from a plain compound interest calculation is what the compounding is made of. Here, growth arrives in two forms — the shares rising in value and the dividends buying more shares that pay their own dividends. That second mechanism is what turns a modest yield into a substantial share count over decades.

When to use it

Use it when deciding whether to switch reinvestment on, and to see the size of the decision. The gap between reinvesting and taking cash looks trivial in year one and enormous in year twenty, and only a projection makes that visible before it is too late to act on.

It is also useful when planning the transition into retirement. Modeling the accumulation phase with reinvestment, then switching to income, shows what dividend stream the position eventually supports. And it clarifies the yield versus growth trade-off — running a 5 percent yield with 2 percent growth against a 2 percent yield with 6 percent growth shows how differently two portfolios with the same total return behave.

Understanding the inputs

Starting amount is the current market value of the holding. Annual return should be the total return — dividend yield plus expected price appreciation — since a DRIP compounds both together. Adding a 3 percent yield to 5 percent growth gives 8 percent.

Be realistic here rather than optimistic. A 6 percent yield paired with 6 percent growth assumptions is internally inconsistent, because a company distributing most of its earnings has little left to reinvest in growth. Monthly addition is any new money you contribute alongside reinvested dividends. Years is the horizon, and it does more work than any other input — the last decade of a long DRIP typically produces more than everything before it.

How is this calculated?

Total annual return = Dividend Yield + Price Appreciation. FV = Initial × (1 + Total Return)^years (simplified). DRIP compounds dividend yield alongside price growth.

A worked example

Take a $20,000 position yielding 3 percent with 5 percent annual price growth, an 8 percent total return, held for 20 years with dividends reinvested. The value reaches roughly $93,200.

Compare that with taking the dividends as cash. The shares alone grow at 5 percent to about $53,100, and you would have collected roughly $19,800 in dividends along the way, for about $72,900 in total — around $20,000 less. Add $200 a month on top of reinvestment and the position reaches approximately $203,000 after 20 years, with $68,000 of that your own contributions. In a taxable account, remember the reinvested dividends were taxed each year as they were paid.

Limitations and assumptions

The model applies one flat total return every year, which markets never deliver. It also assumes the dividend is never cut, when in reality dividends are discretionary and hundreds of US companies reduced or suspended payments in 2020. Past dividends and past returns tell you nothing reliable about future ones.

It does not separate yield from appreciation in the calculation, so it cannot show the growing share count that makes a DRIP interesting, nor can it model dividend growth over time. Taxes are excluded, and in a taxable account reinvested dividends are taxable in the year received. Fund expense ratios and any DRIP fees are also ignored. This is not investment advice.