Dividend Reinvestment (DRIP) Scenario

See how reinvested dividends can change share count when price and yield are deliberately held constant.

Ending share count
Reinvested versus cash dividends
Explicit constant assumptions

How to Model Dividend Reinvestment

Treat every input as a controlled scenario. This calculator does not retrieve a security's market price or dividend history.

1

Select a display currency; no foreign-exchange conversion occurs.

Constant does not mean realistic

Real prices and dividends move independently. Holding both constant isolates reinvestment mechanics but is not a security forecast.

Share Accumulation Under Fixed DRIP Assumptions

This page targets dividend reinvestment specifically. It starts with fractional shares derived from investment divided by share price. Each period pays a dividend from the current shares, constant price and constant annual yield. The selected portion buys additional fractional shares at that same price; any remainder is tracked as cash. Unlike the general investment calculator, there is no price appreciation assumption. The model makes no claim about taxes, broker availability or plan terms.

DRIP Examples

One year of full quarterly reinvestment

Constant assumptions

initialInvestment:10000
sharePrice:100
annualDividendYield:4%
dividendFrequency:quarterly
reinvestPercent:100%

Modeled shares and value

104.0604 shares worth $10,406.04

The model reinvests four 1% periodic dividends at an unchanged $100 share price.

Dividends retained as cash

Constant assumptions

initialInvestment:5000
sharePrice:50
annualDividendYield:6%
dividendFrequency:semiannual
reinvestPercent:0%

Modeled shares and value

100 shares plus $300 cash dividends

No new shares are purchased; total modeled value is $5,300 because price remains constant.

Stress the assumptions

Compare lower yields or partial reinvestment, and remember that real share prices and dividends can fall.

Frequently Asked Questions

No. It holds share price constant, so all modeled growth comes from dividends and reinvestment.

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Constant-Price DRIP Formula

The calculation repeats dividend accrual and fractional-share purchase for every selected payout period.

Formula

shares₀ ​=​ initial investment ​/​ constant share price

Initial shares

shares₀ ​=​ initial investment ​/​ constant share price

Periodic dividend

Dₖ ​=​ sharesₖ₋₁ ​×​ price ​×​ annual yield ​/​ frequency

Reinvested shares

new shares ​=​ Dₖ ​×​ reinvestment percentage ​/​ price

Scientific Background

Investor.gov defines a dividend reinvestment plan as a program that reinvests dividend payments into additional shares. Actual plan enrollment, fees, tax treatment and fractional-share handling depend on the issuer or intermediary and are outside this model.