How the monthly figure is worked out
Three numbers start it: the share price, the shares you hold, and the dividend one share pays across a year. The yearly income is the share count times that dividend a share, and the monthly figure is that yearly income divided by twelve. One multiplication and one division, and no rate is assumed anywhere in either of them.
Income a year = shares × dividend a share a year · Income a month = income a year ÷ 12 · Each payment = income a year ÷ payments a year
Take 100 shares at $20.00 with a dividend of $1.00 a share a year, paid quarterly. The year's income is 100 × 1.00 = 100.00. Paid four times, that is 100.00 ÷ 4 = 25.00 a payment, and across the calendar it is 100.00 ÷ 12 = 8.33 a month. The holding is worth 100 × 20.00 = 2,000.00, so the income is 100.00 ÷ 2,000.00 = 5.0000% of what the shares cost. Type those figures in and the page prints those same lines underneath, with your numbers in place of these.
A month of income is not always a payment. A stock that pays four times a year pays you nothing at all in eight of the twelve months, and the monthly figure on this page is the year's income spread evenly across them, which is what a monthly budget needs and what a monthly-dividend stock actually pays. The page shows both: the payment you would receive, and the monthly average.
The dividend a share is what a company declares per share, and it is worth keeping apart from the yield. A yield of 5% describes a relationship between the price and the payment; the payment itself is the money. This page takes the payment as typed and works the yield out of it, so nothing here is derived from a yield you did not type.
What each row of the year table is
Ask for years and the page carries the holding forward one year at a time. Each row is the same six figures, and each one is defined here rather than left to the reader.
- Dividends that year — the shares held during that year, times the dividend a share for that year. Growth in the payment is applied once at the start of each year.
- Monthly average — that year's dividends divided by twelve, the same division as the figure at the top.
- Yield on cost — that year's dividends divided by every dollar you had put in by then, including the year's own addition.
- Position value — the shares held at the end of the year, times that year's closing price.
- Total return — the position value plus any dividends you kept in cash, minus every dollar you had put in. With reinvestment on there is no cash to add, because the dividends are already inside the position value.
- Total paid in — the bottom line: what the holding cost at the start, plus every yearly addition.
The same 100 shares at $20.00, with the dividend a share growing 5% a year and a three-year run, come out like this. Year 1 pays 100.00, or 8.33 a month, on 2,000.00 in, and returns 100.00. Year 2 pays 105.00, or 8.75 a month, and returns 205.00. Year 3 pays 110.25, or 9.18 a month, and returns 315.25 — the yield on cost has moved from 5.0000% to 5.5125% while the price stood still, which is the dividend growth and nothing else.
Reinvestment moves the same holding differently. Add a price rising 3% a year and tick the reinvest box, and the year 1 dividends of 100.00 buy 100.00 ÷ 20.60 = 4.8543 more shares at that year's closing price, so year 2 is paid on 104.8543 shares and the holding ends year 1 worth 2,160.00. By year 3 the position is worth 2,509.34 on the same 2,000.00 put in. Every one of those figures is in the trace under the table, with the multiplication written out.
The other direction: the capital behind an income
The second half of the page answers the question a monthly dividend calculator is usually asked next: not what a holding pays, but what holding would pay a figure you have in mind. It needs one more number from you — the income you want a month — and it uses a yield that comes from the two figures you already typed: the dividend a share divided by the price. Nothing is assumed about what yields are available in the market, because this page has no business inventing one.
Capital needed = (income a month × 12) ÷ yield, where yield = dividend a share ÷ share price
Wanting 500.00 a month from a holding whose yield is 5.0000%: that is 500.00 × 12 = 6,000.00 a year, and 6,000.00 ÷ 5.0000% = 120,000.00. If the money is to be built up rather than already held, the page divides that capital across the months of the run, compounding what you add at the price growth you typed. With no price growth the arithmetic is one division: 120,000.00 ÷ 120 months = 1,000.00 a month for ten years. With the price growing 6% a year the monthly addition drops to 738.58, because what you put in early is working for you by the end. Both chains of arithmetic are printed in full, the monthly rate included, so the difference between the two answers can be seen rather than guessed at.
Two things this half of the page is not. It is not a savings plan: it says nothing about what a stock will return, only what a yield you typed would pay. And it is not an argument for one yield over another: a 5% yield in the figures you type is exactly that and no more.
How many decimals, and which way the last one goes
The rule has four parts, and between them they cover every figure this page prints.
- Money: at most two decimals. Anything past the second decimal is thrown away. An amount of 8.339 comes back as 8.33, never as 8.34.
- A dividend a share: at most four decimals, by the same rule. The share of the year's payment that belongs to one share can sit well past two decimals, so it is kept to four.
- Share counts: at most four decimals, a count that comes out whole showing without trailing zeros. Reinvestment buys fractions of a share, and this page keeps them instead of pretending they did not happen.
- Percentages: at most four decimals, yields and growth alike. The yield of 5% above is printed 5.0000% because that is the figure the division actually produces.
So this page truncates rather than rounds, in both directions: nothing is ever rounded up, and a negative figure is cut the same way. The reason is that a rounded figure can be larger than the arithmetic it claims to show, and a page whose whole point is that you can check the working should not print a number the working does not produce. Where a figure would round up, the last digit lands one step lower here.
How many places should a figure like this be carried to? Nothing fixes a number. Four decimals is enough that the per-share and percentage figures stay accurate when they are multiplied back out, and it is the number kept across this site; treat the choice of four as this page's own, stated so that you can take a different one on purpose. That statement itself is the part most dividend calculators leave out: the ten pages this one was checked against in September 2026 all left their decimal rule unstated.
One limit is worth stating because it is measured rather than guessed. The working runs in the browser's own arithmetic, which carries about fifteen significant digits. At the sizes a personal holding reaches, that is far more than two decimals need, and every money figure on this page matches an independent recomputation to the cent. Carry a run on until it compounds past a billion dollars, and a cent stops being something that arithmetic can resolve at that size, so a single figure in a long table can read a cent above or below the exact figure. The rule itself does not change anywhere on the page: figures are cut short, never rounded up.
A dividend on a stock is not a dividend on a deposit
Search for a dividend calculator and a good part of what comes back is not about stocks at all. A credit union or a bank will call the interest on a savings balance or a certificate of deposit a dividend, and a calculator on its site will compound that balance and hand back a total. The word is the same; the thing is not. A deposit pays a rate the institution sets, on a balance it holds, and the money is not at risk in the way shares are. A stock pays what its board declares, per share, out of the company's money, and the payment can be cut or stopped.
This page does the stock side and only the stock side. It does not compound a balance and it does not hold a rate: it takes a dividend a share that you type and multiplies it by shares that you type. The reason for saying so is that the two are easy to mix up in a search result. In the ten pages this one was checked against, three were deposit calculators from credit unions, and one of those returned nothing at all because the calculator never rendered. If the figure you want is the interest on a deposit, the CD calculator beside this one is the page that does that job.
What goes in, and what stays outside
The income figures this page prints are cash dividends: money a company pays out per share, which is what reaches your account. They are not a total return, and this page is not a total-return calculator. The one place where price movement enters is the last column of the year table, and it is labelled there as such so the two do not get mixed. The rest of what is outside has no box to put it in.
- Tax. No field for a rate, a bracket or a holding period. Every figure is before tax. On dividends paid outside a tax-sheltered account a withholding or an income tax usually follows, and this page shows none of it.
- Commission, fees and spread. No field for any of them. If you buy with them, the money you put in is larger than the price per share suggests, and the yield on cost here is higher than what the page prints for the same rows. Add them to the price before typing it if you want them in.
- Currency. Every amount comes back in whatever currency you typed, and no exchange rate is applied. Figures typed in two currencies at once would be added as plain numbers, which would mean nothing, so keep one currency per run.
- Live prices and dividend lookups. There is no quote feed and no ticker box on this page, so nothing here can show a price or a payment that you did not type. That is deliberate: a stale price typed into a page that looked it up would be worse than no figure at all.
- Payment timing inside a year. A stock paying monthly and a stock paying quarterly, with the same dividend a share and the same share count, come out the same here: the year is the unit, and reinvestment is applied once a year at that year's closing price. What the payment frequency changes is the size of each payment, not the year.
- What happens next. The table is arithmetic on the growth rates you typed, carried forward as many years as you asked for. It is a what-if, not a forecast, and it says nothing about whether the dividends will be paid at all.
Nothing on this page is advice, and no figure on it is a recommendation. The page does sums on numbers you supply; what you do with the sums is yours.
Frequently asked questions
What does a monthly dividend calculator work out?
Two things, in opposite directions. The first is what a holding pays you each month: the shares you type, times the dividend a share that you type, divided by twelve. The second is the capital behind a figure you name: the income you want each month, turned into a required amount of capital at the yield your own two figures give, and then into a monthly amount to add over the years you typed. Both halves print their arithmetic.
Is a monthly dividend income calculator the same as a dividend income calculator?
In what people mean by them, yes: both ask what a holding pays, and the words monthly, annual or quarterly describe the period the answer is read in rather than three different jobs. This page prints the month, the payment and the year together so the same run answers any of the three, and it carries the holding forward so the figure can be read at any year rather than only today. The dividend calculator beside it answers the narrower version of the question — what the dividends you already receive come to, with no year count and no growth rate anywhere on it.
How is the monthly figure worked out when the stock pays quarterly?
By dividing the year by twelve. 100 shares paying 1.00 a share a year pay 100.00 across the calendar, which is 25.00 four times and 8.33 a month on average. Eight months of that year bring nothing at all, so the monthly figure is a way of reading a quarterly income, not a payment you will receive. If you want a monthly payment in the literal sense, that is a property of the company's dividend schedule and not of any calculator.
Does this page round, or cut the figures short?
It cuts. Nothing is rounded up anywhere on the page, so the figure you read is never larger than the arithmetic that produced it. Money is cut at two decimals, per-share figures, share counts and percentages at four, and the section on decimal places above states the rule with the reason behind it. If you need a rounded figure somewhere, round the printed one yourself at the end and write down that you did.
What happens if I leave a field blank?
Each box has its own rule and its own note beside it. The share price and the share count are needed: blank, and there is nothing to work out, which the page says rather than guessing. The dividend a share, the yearly addition and the two growth rates read as zero when left blank. The year count left blank turns the year table off and leaves the figures for the holding as it stands. The two lists are short, so nothing is hidden.
How much do I need invested to get 500 a month in dividends?
It depends entirely on the yield, and the yield is yours to type rather than one this page picks. At 5.0000% — 1.00 a share on a 20.00 price — 500.00 a month is 6,000.00 a year, and 6,000.00 ÷ 5.0000% = 120,000.00. At 3.0000% the same income needs 200,000.00, and at 8.0000% it needs 75,000.00. Put your own dividend a share and price into the boxes above, type 500 as the income you want, and the page prints the division for your figures rather than these.
Why can't it look up my dividend or my share price?
Because a figure this page fetched could be stale, and a stale input produces a confident wrong answer with the working to match. Everything here is typed, so you can see where each figure came from and check it against whatever you trust. The trade is that the page is only as right as the two numbers you type; the dividend a share and the price are printed on every broker statement and company page.
Does it count taxes, fees or currency?
None of the three, and there is no box for any of them. Every income figure is gross, before tax and before anything a broker takes. Commission and spread sit inside the price you type if you put them there, and one currency per run is what the page assumes.
What happens to the dividends if I reinvest them?
Yes, and the difference is visible in the table. With reinvestment on, each year's dividends buy more shares at that year's closing price, so the next year is paid on a larger share count and the position value grows from two directions. With it off, the dividends are kept as cash and counted in the total-return column instead. The dividend reinvestment calculator takes the same idea lot by lot: it works from the dividends you were actually paid and the prices they were reinvested at.
Do I need an account, and does the page save anything?
No account, no sign-up, no pop-up, and nothing saved. The whole calculation runs in the browser tab on your own device, no figure is sent anywhere, and the numbers are gone when the tab closes.
Why is the yield on cost different from the yield I see quoted?
Because they measure against different things. A quoted yield compares the dividend with today's price. The yield on cost here compares the income with the money you put in — and once you type an addition or a growth rate, the two drift apart in a way the table shows year by year. On the same 100 shares at 20.00 with a dividend growing 5%, the yield on cost reaches 5.5125% by year three while the price has not moved at all.