How the Quiz: Dividend Calculator works
This tool answers two questions dividend investors ask about a stock position: how much cash income does it produce right now, and how might that income grow over time? It uses the standard dividend yield formula for the current snapshot, then projects the dividend forward at a chosen annual growth rate — optionally reinvesting each payment into more shares (a dividend reinvestment plan, or DRIP).
The formulas
Dividend yield is the annual dividend per share divided by the current share price:
Yield = Dividend per Share / Share Price × 100
Current annual income is simply shares owned times the dividend per share: Income = Shares × Dividend per Share. To project forward, the calculator steps through the time horizon one year at a time. Each year it pays out the current dividend, adds that total to a running sum, and then grows the dividend per share by the entered growth rate for the next year. If DRIP is enabled, the dividend payment is also used to buy additional shares at the current price (shares += payment / price), and the share price is grown at the same rate as the dividend so the yield stays constant year to year — the standard simplifying assumption used to model reinvestment compounding.
Worked example
Take 100 shares at a $50 share price paying a $2.00 annual dividend per share — a 4% yield and $200 of current annual income. Grown at 5% a year for 10 years with dividends taken as cash, the projected payment in year 10 is about $310.27 and the cumulative cash collected over the decade is roughly $2,515.58. Switch on DRIP and the same inputs compound the share count as well as the payment, producing a materially larger year-10 income and cumulative total because each year's dividend buys more shares that then earn their own dividends.
What moves the projection most
- Dividend growth rate: small differences compound dramatically over long horizons — 3% versus 7% growth produces very different year-20 income from the same starting position.
- Reinvestment (DRIP): reinvesting adds a second compounding effect (more shares, each paying a growing dividend) on top of the dividend growth rate alone.
- Time horizon: compounding needs time to work; the gap between cash and DRIP outcomes widens the longer the horizon runs.
What this does not model
This is a gross-income projection, not investment advice. It excludes taxes, brokerage fees, and dividend withholding; it assumes the dividend growth rate and (for DRIP) the share price growth rate stay constant every year, which real companies and markets do not guarantee; and it does not account for the possibility of a dividend cut or suspension. Use it to compare scenarios and understand the mechanics of compounding, not as a guaranteed forecast.