Dividend Reinvestment (DRIP) Calculator

Compare the long-term wealth difference between reinvesting dividends automatically (DRIP) and taking them as cash, with a year-by-year simulation.

DRIP advantage over cash dividends

$4,963

Additional wealth accumulated by reinvesting dividends vs taking them as cash

Detailed results
Final portfolio value (DRIP)Total portfolio value at the end of the holding period with DRIP	$22,229
Final portfolio value (cash dividends)Total portfolio value (shares + cash dividends) without reinvestment	$17,266
Initial dividend yieldAnnual dividend income as a percentage of the initial share price	4%
Final shares (DRIP)Total share count at the end of the holding period with DRIP	167.56

What this result means

Starting with 100 shares worth $5,000 and a 4.00% dividend yield ($2/share per year), reinvesting all dividends for 20 years produces a final portfolio of $22,229 — $4,963 more than the $17,266 accumulated by taking dividends as cash. That difference reflects the power of compounding: each reinvested dividend buys additional shares that themselves earn future dividends.

Year-by-Year DRIP Simulation

Shows how shares, share price, and total portfolio value evolve each year under both the DRIP and cash-dividend scenarios.

Year-by-Year DRIP Simulation. 20 rows, first 12 shown.
Year	Shares (DRIP)	Share Price	Portfolio Value (DRIP)	Portfolio Value (Cash)	Dividends Received (DRIP)
1	104	$52.50	$5,460	$5,450	$200
2	107.96	$55.13	$5,951	$5,913	$208
3	111.88	$57.88	$6,476	$6,388	$216
4	115.74	$60.78	$7,034	$6,878	$224
5	119.55	$63.81	$7,629	$7,381	$231
6	123.3	$67.00	$8,262	$7,900	$239
7	126.98	$70.36	$8,934	$8,436	$247
8	130.59	$73.87	$9,647	$8,987	$254
9	134.13	$77.57	$10,404	$9,557	$261
10	137.58	$81.44	$11,206	$10,144	$268
11	140.96	$85.52	$12,055	$10,752	$275
12	144.26	$89.79	$12,954	$11,379	$282

How this is calculated

dividend_yield = annual_dividend_per_share / share_price × 100
Each year (DRIP):
  dividends_received = shares × annual_dividend_per_share
  new_shares = (dividends_received + additional_annual_investment) / price
  shares += new_shares
  price = price × (1 + annual_price_appreciation / 100)
Each year (cash):
  cash_dividends += shares × annual_dividend_per_share
  shares += additional_annual_investment / price
  price = price × (1 + annual_price_appreciation / 100)
drip_final_value = shares_drip × final_price
no_drip_final_value = shares_no_drip × final_price + cash_dividends
drip_advantage = drip_final_value − no_drip_final_value

What is a Dividend Reinvestment Plan (DRIP)?

A Dividend Reinvestment Plan, or DRIP, is an arrangement in which cash dividends paid by a stock or fund are automatically used to purchase additional shares instead of being deposited as cash. Many brokerages and companies offer DRIP programs, often with the ability to buy fractional shares so that every dollar of dividend income is put to work immediately.

The compounding power of reinvested dividends

The core advantage of DRIP investing is compounding. When dividends buy additional shares, those shares generate their own dividends the following year — dividends on dividends. Over long holding periods this snowball effect becomes substantial. A 4% dividend yield might look modest in year one, but after 20 or 30 years of reinvestment, the share count can be dramatically higher, amplifying the benefit of any price appreciation as well.

Consider a simple example: 100 shares paying a $2 annual dividend at a $50 price (4% yield). Reinvesting those dividends buys 4 additional shares in year one. Those new shares generate dividends of their own, and the process repeats. By the end of a 20-year holding period the compounding effect can produce tens of thousands of dollars more than simply pocketing the cash.

Fractional shares and full deployment

One practical advantage of modern DRIP programs is fractional share purchasing. Because dividend amounts rarely align perfectly with a whole-share price, DRIP programs allocate fractional shares so that 100% of the dividend is reinvested. No cash sits idle. This is especially valuable for high-priced shares where a single share might cost hundreds of dollars.

Tax treatment of dividends

An important nuance: dividends are taxable income in the year they are paid regardless of whether you reinvest them or take them as cash. The IRS treats DRIP shares the same as cash dividends followed by a stock purchase. Each reinvested dividend creates a new cost-basis lot at the purchase price, which affects capital gains calculations when you eventually sell. In tax-advantaged accounts (Roth IRA, 401(k), HSA), dividends reinvested through DRIP grow entirely tax-free or tax-deferred, making DRIP especially powerful in those wrappers.

When cash dividends make more sense

DRIP is not always the optimal strategy. If you rely on dividend income to cover living expenses in retirement, taking dividends as cash makes obvious sense. If you believe a company's shares are overvalued at the time dividends are paid, reinvesting at elevated prices may not be attractive. Some investors also prefer to harvest dividends and redeploy them into underweighted positions as a form of tax-efficient rebalancing. DRIP is a compelling default for long-horizon, growth-oriented investors who do not need current income — for income-focused investors or those actively managing asset allocation, a manual approach can be superior.

How this calculator works

This calculator runs a year-by-year simulation. In the DRIP scenario, each year's dividends are divided by the current share price to purchase fractional shares, which are added to the total. In the cash scenario, dividends accumulate without compounding. Both scenarios apply any additional annual investment to purchase shares at the prevailing price. Share price grows at the specified annual appreciation rate. The DRIP advantage is the difference in final portfolio value between the two strategies.

Assumptions

Annual dividend per share is constant throughout the holding period; real-world dividends may be cut, increased, or suspended.
Share price appreciates at a constant annual rate; actual market prices are volatile and unpredictable.
DRIP purchases occur once per year at the price prevailing at the beginning of that year; many real DRIPs execute quarterly or at each dividend payment date.
Cash dividends in the no-DRIP scenario are accumulated without earning any return; parking that cash in a money-market fund or bonds would reduce the apparent DRIP advantage.
Additional annual investment occurs at the same time as the dividend reinvestment purchase and at the same price.
No taxes, brokerage fees, or transaction costs are deducted.
Fractional shares are fully supported; no rounding to whole shares is applied.

Frequently asked questions

›Do I owe taxes on reinvested dividends?

Yes. The IRS treats reinvested dividends as taxable income in the year they are paid, exactly as if you had received the cash and immediately bought more shares. Each reinvestment creates a new cost-basis lot at the purchase price. In a taxable account you will receive a 1099-DIV showing total dividends even if you never saw a penny in cash. In a tax-advantaged account like a Roth IRA or 401(k), dividend reinvestment grows tax-free or tax-deferred with no current-year tax consequence.

›Can I buy fractional shares through a DRIP?

Yes. Most brokerage DRIP programs and company-sponsored DRIPs allocate fractional shares so that 100% of the dividend is reinvested immediately, regardless of the share price. For example, a $47 dividend and a $150 share price would result in 0.313 fractional shares being added to your account. This full-deployment feature is one of DRIP's key practical advantages over manual reinvestment.

›Is DRIP better than investing dividends manually?

DRIP automates reinvestment and eliminates idle cash, which tends to produce better long-term outcomes than manual reinvestment for investors who might delay or forget. However, manual reinvestment gives you the flexibility to redirect dividends toward underweighted positions for rebalancing purposes, or to invest them during market dips rather than at arbitrary dividend-payment dates. For most long-horizon investors, the automation and consistency of DRIP outweigh the flexibility of manual investing.

›How does additional annual investment affect the comparison?

Additional investments are applied equally in both scenarios — in each case the cash buys more shares at the prevailing price. This means the DRIP advantage shown in the calculator is purely attributable to dividend reinvestment, not to different contribution amounts. Adding regular contributions amplifies the absolute dollar difference between scenarios because both portfolios are larger, but the relative advantage remains driven by the compounding of reinvested dividends.

›Does share price appreciation affect the DRIP advantage?

Yes. When share prices rise rapidly, each reinvested dividend buys fewer shares (because price is higher), which slightly reduces the compounding benefit. Conversely, when prices are flat or declining, reinvested dividends buy more shares at lower prices — a built-in dollar-cost-averaging effect. In practice, the DRIP advantage is most pronounced when dividend yields are high and the holding period is long, regardless of the exact price appreciation rate.