The InvestPips investor lab · Free calculator
Dividend reinvestment
calculator.
What changes when you reinvest your dividends? Compare two paths, explore an income goal, and see how a dividend cut changes the picture.
Illustrative scenarios · USD
Your two paths
Scenario, not a predictionChoose your assumptions to compare the outcomes.
Save stores one set of inputs in this browser. Clearing browser data removes it.
Make the comparison useful
One investment. Two dividend choices.
A dividend reinvestment plan, or DRIP, uses a cash dividend to purchase more shares. The SEC describes these plans as a way to reinvest in a company you already own; availability and fees depend on the company or brokerage. See the SEC’s direct-investing explanation.
This calculator follows two hypothetical holdings with identical starting investments, deposits, price changes and dividend assumptions. One reinvests its after-tax payouts. The other collects them in cash. In the cash path, that money remains unspent and earns no interest. Its total value includes both the investment and the collected cash, so the comparison does not discard the payouts.
Use Compare growth to explore the difference. Use Reach an income goal to solve for a starting investment or monthly contribution at the end of your chosen period. A goal solution can be applied to the form so you can inspect the full scenario.
Changing a yield or growth assumption changes the arithmetic, not the likelihood of that outcome. Dividend reinvestment increases exposure to the holding; it does not guarantee a higher ending value.
A calculation you can follow
What does reinvesting $400 change?
Start with a hypothetical $10,000 investment, a 4% annual dividend yield, annual payouts, no new contributions, no tax and no change in share price or dividend per share.
| Year | Reinvest dividends | Collect cash: total value |
|---|---|---|
| Start | $10,000.00 | $10,000.00 |
| 1 | $10,400.00 | $10,400.00 |
| 2 | $10,816.00 | $10,800.00 |
| 10 | $14,802.44 | $14,000.00 |
The first $400 buys more shares in the DRIP path. Those shares produce another $16 of dividends in year two. The cash path still holds the original investment plus its collected payouts. This example isolates reinvestment; actual prices and payouts change.
Transparent by design
How the dividend model works
The model tracks fractional shares internally using a notional starting price of $100. This is a unit scale, not a market quote. Scaling that starting price would not change the dollar results. Starting annual dividend per share is $100 multiplied by the entered yield.
- Price moves monthly. The annual price-growth assumption is converted to a monthly factor: (1 + annual price growth)^(1/12). This input excludes dividend returns.
- Dividend per share changes annually. The entered dividend-growth rate first applies at the start of year two. An optional cut applies once at the start of the selected year, after that year’s growth. The reduced payout is the new base for future growth; a 100% cut leaves it at zero.
- Payouts follow the selected interval. Monthly, quarterly, semiannual and annual payments occur every 1, 3, 6 or 12 months. At each payment, shares held before that month’s new deposit receive annual dividend per share divided by payments per year.
- Tax is deducted from each payout. The flat rate you enter reduces cash available in both paths. The remainder either buys fractional shares at that month-end price or joins the cash balance.
- New contributions arrive last. Each month’s deposit buys shares after any dividend payment. Contribution growth changes that deposit at the start of each subsequent year.
New DRIP shares = payout after assumed tax ÷ modeled share price
Reading the income figure
The monthly income equivalent is year-end shares × that year’s annual dividend per share × (1 − dividend tax rate) ÷ 12. It is an annualized snapshot, not the amount received each month and not the year’s actual dividends. The annual table and downloads separately show actual modeled payouts.
How income goals are solved
For each path, the calculator holds the other assumptions fixed and solves for the starting investment or starting monthly deposit that reaches the selected year-end income. It checks amounts in cents and returns the smallest supported amount that reaches the goal. A growing-contribution plan increases that initial monthly deposit each year. Goals are in future dollars; inflation affects the purchasing-power display, not the goal itself.
The goal refers to the end of the horizon, not the first temporary milestone along the way. A zero payout, a full dividend cut or a 100% dividend-tax assumption can make a positive goal unattainable. The calculator reports this instead of producing an infinite amount.
What the model leaves out
It does not fetch stock prices, forecast a company’s dividend, model ex-dividend dates, apply a mechanical price drop on a payout date, or account for fees, spreads, whole-share restrictions, corporate actions, return-of-capital distributions, capital-gains tax, tax lots or cash interest. Entered price growth describes the modeled price path separately from dividends. Tax-advantaged accounts have additional rules this tool does not model. Inflation is constant and is used to discount ending total value to today’s dollars.
The cut scenario changes payouts only. It does not simulate a related price decline unless you also change the price-growth assumption. Results are educational scenarios, not forecasts or personalized investment advice.
Dividend model 1.0.1 · Methodology reviewed October 5, 2026 · USD · Fractional shares · No brokerage connection
Questions behind the numbers
Dividend reinvestment questions
How much do I need to make $1,000 or $2,000 a month in dividends?
A simple starting estimate is annual income divided by annual yield. At a hypothetical 4% yield before tax, $1,000 per month is $12,000 per year, requiring $300,000. A $2,000 monthly equivalent requires $600,000. These are arithmetic examples, not recommended yields or guaranteed income. Use income-goal mode to include time, contributions, reinvestment and your tax assumption. Payout schedules may not be monthly.
How much would I need for $10,000 a month?
At the same hypothetical 4% yield before tax, $120,000 per year divided by 0.04 is $3 million. A higher assumed yield reduces the calculated capital requirement but does not make the investment safer or the income more dependable. Try a lower payout or a dividend cut to see how sensitive the goal is.
How do I calculate dividend reinvestment?
Calculate the cash payout on eligible shares, subtract any tax or costs you are modeling, and divide the reinvested amount by the purchase price. Add those new shares before calculating a later payout. The worked example above holds prices and payouts constant to make this process easy to follow.
Is there a downside to reinvesting dividends?
You give up current cash access and add exposure to the same investment. Its price can fall, and its dividend can shrink or disappear. Reinvestment may not fit a need to spend income or change an allocation. Vanguard’s dividend-reinvestment overview explains market risk and dividend cuts. Use our comparison to explore assumptions, rather than interpret the larger number as a recommendation.
Are reinvested dividends taxed twice?
In a U.S. taxable account, reinvesting a dividend generally does not avoid reporting the dividend as income. The IRS explains the reporting requirement. Shares bought with reinvested dividends also have a cost basis; correctly recording it helps avoid counting their purchase cost as a later capital gain. See IRS Publication 550. The calculator only deducts a flat dividend-tax rate you choose. It does not calculate sale taxes or track tax lots.
Is dividend growth the same as share-price growth?
No. Dividend growth changes the cash dividend per share. Price growth changes what the shares are worth and what a reinvested payout can buy. Dividend yield can therefore change over time. Enter price appreciation without adding dividend yield; the calculator models the payouts separately.
Does the calculator show real stocks or guaranteed returns?
No. It uses the assumptions you enter for a hypothetical holding. No ticker data, current prices, success probabilities or company-specific forecasts are used. A smooth chart represents the model’s fixed assumptions; actual results will fluctuate.
Can I save or download my calculation?
Download Excel creates a formatted report with a scenario summary, growth chart and annual results. Download CSV provides the same underlying scenario data for importing elsewhere. Downloads are snapshots; change your assumptions here and download again for updated results. Save scenario stores one set of inputs on this browser and device. It does not create an account or sync to other devices. Clearing browser data removes the saved scenario.
Sources & further reading
- SEC Investor.gov: direct investing and dividend reinvestment plans
- IRS: how reinvested dividends are reported
- IRS Publication 550: investment income, expenses and basis
- IRS Topic 404: dividends and other corporate distributions
- Vanguard: dividend reinvestment and its risks
These sources explain the underlying concepts. The calculation model and interface are original InvestPips work; the sources do not endorse this tool. Read our editorial and advertising standards.