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Dividend Reinvestment (DRIP) Calculator

A dividend reinvestment plan uses a cash dividend to buy more shares. This calculator compares that simplified reinvestment path with keeping the same dividends in cash, using your inputs and a constant share price and dividend amount.

Calculator

Enter values to compare cash and reinvestment scenarios.

Illustrative input-based model; it does not forecast dividends, share prices, or returns. Not financial advice.

What does a dividend reinvestment calculator show?

This DRIP calculator estimates how a fixed dividend could change share count if each payment buys fractional shares at an unchanged price. It compares that result with holding the same shares and retaining each dividend as cash. It uses no market feed or company dividend data.

For every payment, the cash scenario adds starting shares × dividend per share to a cash balance. The reinvestment scenario adds that payment divided by the assumed share price to the share count. The next payment is then calculated on the updated share count. At the end, cash-scenario value is shares × price plus accumulated cash; reinvestment-scenario value is ending shares × price. The difference is a result of the calculator's fixed-input assumptions, not evidence that reinvestment will outperform.

For a hypothetical illustration, 10 shares at 100 currency units, with a 1-unit dividend per share paid four times each year, produces a first modeled payment of 10 units. Reinvesting that payment at the assumed 100-unit price adds 0.1 share. Actual plan execution can use different pricing and rules.

The model assumes a constant share price, constant per-share payment, regular payments, immediate reinvestment at the entered price, and fractional-share purchases. Actual plans may have fees, minimums, eligibility requirements, purchase timing, and pricing rules. Investor.gov explains that a DRIP reinvests dividend payments into additional shares and advises checking the company or brokerage plan terms and fees. Source: Investor.gov, Direct Investing, accessed 2026-11-03.

Dividends and market prices can change, and a dividend is not guaranteed. This comparison excludes price movement, dividend cuts or increases, taxes, fees, withholding, payment dates, and transaction restrictions. It does not calculate tax basis or tax due. For tax questions, review current IRS guidance, including Publication 550, and seek qualified tax help where needed.

Frequently asked questions

Does a DRIP guarantee a higher return?

No. This is a fixed-price arithmetic comparison. It does not predict future prices or dividends, and it cannot establish which choice will do better.

Can I enter fractional shares?

Yes. The model allows fractional starting and reinvested shares. Whether a real plan supports fractional purchases depends on that plan's terms.

Does this include taxes or fees?

No. It displays gross modeled amounts before taxes and fees. Plan rules and tax treatment can vary; check official documents and your own records.

Why is the price held constant?

Holding price fixed isolates the share-count effect of the entered dividend assumption. It is a simplifying scenario, not a price forecast.

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Formula and attribution

Last updated:

For each payment, cash balance increases by starting shares × dividend per share. Reinvested shares update as shares + (shares × dividend per share ÷ fixed share price). Final cash-scenario value = starting shares × price + accumulated cash; reinvestment-scenario value = ending shares × price. Assumes fixed price and payment and fractional reinvestment.

Output (shares and user-selected currency): Estimated ending shares, retained dividends as cash, ending scenario values, and their difference under fixed-input assumptions; excludes price/dividend changes, taxes, fees, and plan rules.