Dividend Reinvestment (DRIP) Scenario
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.
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
Modeled shares and value
The model reinvests four 1% periodic dividends at an unchanged $100 share price.
Dividends retained as cash
Constant assumptions
Modeled shares and value
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
Still have questions about this calculation?
Try the CalculatorConstant-Price DRIP Formula
The calculation repeats dividend accrual and fractional-share purchase for every selected payout period.
Formula
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.