What Is the Dividend Reinvestment Calculator?
A dividend reinvestment calculator models what happens when you automatically use dividends to buy more shares. Known as a DRIP, this strategy adds a second compounding effect — your dividend income itself grows as the share count rises.
How to use this calculator
Type your numbers into the fields above. The results change the moment you edit any input, so you can try one scenario after another and see exactly what moves. Most calculators show a short summary of the key figures, a line-by-line breakdown underneath, and — where it applies — a year-by-year schedule you can export to a spreadsheet. Everything runs in your browser; nothing is stored or sent anywhere. Treat the output as a planning estimate, not as final word on a real decision.
The Formula
Each year the calculator adds the per-share dividend times your share count, divides by the (growing) share price to buy fractional shares, then grows the price by the assumed annual rate. Repeat for the holding period to find the final share count and value.
Worked Example
Start with 100 shares at $50 ($5,000) paying $2 annually, with 6% price growth for 15 years. Reinvestment lifts your share count and the final value well above the price-only gain, with total reinvested dividends becoming a meaningful chunk of the outcome.
Tips for the Most Accurate Estimate
- Reinvestment is most powerful over long horizons.
- Higher dividend yields accelerate the second compounding engine.
- Watch that concentration risk does not grow with one stock.
- Reinvest in tax-advantaged accounts to avoid yearly tax drag.
- Compare the final value to simply taking cash dividends.
Frequently Asked Questions
Q: What is a DRIP?
A Dividend Reinvestment Plan automatically uses cash dividends to purchase additional shares, often fractional, instead of paying them out.
Q: Are reinvested dividends taxed?
In taxable accounts, dividends are generally taxable in the year received even though reinvested. Use tax-advantaged accounts to avoid that drag.
Q: Why does reinvesting beat taking cash?
Because the new shares pay their own dividends, creating compounding that cash payments spent elsewhere do not.