Calculatrice de reinvestissement des dividendes

Dividend Reinvestment Calculator

A dividend reinvestment plan (DRIP) automatically uses each dividend payment to purchase additional shares instead of sending you cash. Over time, those extra shares generate their own dividends, which buy even more shares — creating a compounding loop that grows faster the longer it runs. This calculator lets you enter your starting investment, dividend yield, price appreciation rate, and time horizon to see your ending portfolio value under both DRIP and cash-dividend scenarios, so you can quantify the difference before deciding which approach fits your goals.

How Dividend Reinvestment Is Calculated

Without reinvestment, dividends accumulate as cash while only price appreciation compounds. With reinvestment, the effective annual return is the price growth rate plus the dividend yield, applied to the entire portfolio including all previously reinvested dividends:

With DRIP: FV = P x (1 + g + y)^n

Without DRIP: FV = P x (1 + g)^n + (P x y x n)

Where P is the initial investment, g is the annual price appreciation rate, y is the dividend yield, and n is the number of years. In the DRIP formula, growth and yield both compound together each year. In the non-DRIP version, only price growth compounds — dividends are added as a flat cash stream, so they never generate returns of their own. The gap between the two formulas widens every year because reinvested dividends grow the base on which future dividends are calculated.

Worked Examples

Scenario 1 — Long-term core holding: A 35-year-old invests $20,000 in a broad dividend ETF yielding 2.5% with 7% historical price appreciation. Over 30 years with DRIP, the portfolio grows to about $304,000. Taking dividends as cash instead yields roughly $220,000 in portfolio value plus $42,000 in cash dividends collected — a total of $262,000. The DRIP outcome is about $42,000 higher (16% more) with no extra effort beyond checking a box.

Scenario 2 — High-yield income stock: An investor puts $15,000 into a utility stock yielding 4.5% with 4% expected price growth. Over 20 years with DRIP, the position grows to approximately $94,000. Without reinvestment, the stock is worth about $32,870 with $13,500 in cash dividends collected — about $46,370 total. The DRIP scenario doubles the non-DRIP outcome, because the high yield means every reinvestment period purchases significantly more shares.

Scenario 3 — Regular contributions plus DRIP: An investor starts with $5,000 and adds $200/month to a fund yielding 3% with 7% price growth. After 25 years, total contributions are $65,000. With DRIP, the portfolio reaches approximately $218,000. This shows that combining systematic contributions with dividend reinvestment — even at a modest yield — is one of the most reliable paths to building a six-figure portfolio from a small starting point.

DRIP vs. Cash Dividends Reference Table

When to Use This Calculator

• You are in the accumulation phase and want to quantify how much reinvesting dividends — rather than taking them as cash — adds to your ending balance over 10, 20, or 30 years
• You are comparing two dividend stocks with different yield and growth profiles and want to see which produces greater total value with DRIP over your specific time horizon
• You want to decide whether to hold a dividend stock in a taxable account versus a Roth IRA, and need to estimate the after-tax drag of reinvesting dividends annually in a taxable account
• You are approaching retirement and considering switching from DRIP to cash dividends, and want to see at which point the income stream becomes meaningful enough to stop reinvesting
• You are modeling a portfolio of dividend-growth stocks and need a baseline projection before stress-testing it with lower-than-expected growth or yield assumptions

Common Mistakes

1. Using current yield instead of total return. A stock yielding 6% but declining in price by 2% per year has an effective total return of only 4% — and the declining share price means each reinvested dollar buys into a falling asset. Always factor in expected price appreciation alongside yield, not yield alone.
2. Ignoring the tax drag in taxable accounts. Reinvested dividends are taxable in the year they are paid even though you receive no cash. On a $100,000 DRIP portfolio yielding 3%, you owe tax on $3,000 each year — roughly $450 at the 15% qualified dividend rate. Over 20 years, this annual friction can reduce your ending balance by 8-12% compared to the same investment in a Roth IRA.
3. Assuming dividend growth will match historical averages indefinitely. S&P 500 dividends have grown at about 5-6% annually over long periods, but individual companies cut or eliminate dividends during recessions. Building a DRIP strategy around a single high-yield stock that later cuts its dividend can significantly undermine long-term projections.
4. Neglecting portfolio concentration. Automatic reinvestment directs money back into the same position every quarter. If one stock appreciates significantly while you reinvest, it can grow from 5% of your portfolio to 20% or more, adding concentration risk you never consciously chose to take.

DRIP Investing in Context

Historically, reinvested dividends have contributed roughly 40% of the S&P 500’s total return since 1930 according to data from Hartford Funds. That means an investor who collected dividends as cash would have captured about 60% of the index’s total return while an investor who reinvested captured the full 100%. The gap is largest during long bull markets when reinvested dividends buy more shares at higher prices, and those shares then appreciate further.

The Dividend Aristocrats — S&P 500 companies that have raised dividends for 25 or more consecutive years — include names like Procter & Gamble (yielding around 2.4% in early 2026), Johnson & Johnson (around 3.1%), and Coca-Cola (around 3.3%). These companies provide both a reasonable current yield and a track record of annual dividend increases, making them common anchors for long-term DRIP portfolios.

Tips

• Enable DRIP as soon as you open a brokerage account — most brokers allow fractional share reinvestment with zero commissions, and early enrollment means no dividends are wasted as idle cash
• Prioritize Roth IRA or 401(k) accounts for high-yield dividend holdings; inside a Roth, every reinvested dollar and every future withdrawal is tax-free, which eliminates the annual tax drag entirely
• Look for a dividend growth rate of at least 5% annually alongside a current yield of 2-4%; this combination tends to produce more income in year 10+ than a high-current-yield stock with no growth
• Review your DRIP positions annually and rebalance if any single position has grown to more than 10-15% of your portfolio — automatic reinvestment can quietly create concentration over several years
• When comparing DRIP vs. cash, use the calculator at your actual marginal dividend tax rate (0%, 15%, or 20% for qualified dividends) to see the real after-tax advantage in a taxable account vs. a tax-advantaged one
• Do not turn off DRIP during market downturns; buying additional shares at lower prices lowers your average cost basis and amplifies returns when prices recover — the 2020 market crash followed by a rapid recovery is a recent example of this effect working in investors’ favor