Do I pay tax on stocks I haven't sold?
Growth in a taxable account is not taxed until you sell, but dividends and fund distributions are taxed in the year they are paid, even when reinvested.
Quick answers
- Do I owe tax on a stock that went up but I did not sell?
- No. A rise in value is not taxed while you hold the shares. Tax arrives when you sell, and the gain is measured against what the shares cost you.
- Why did I get a tax form if I never sold anything?
- Because the investment paid you something. Dividends and fund distributions are taxed in the year they are paid, and your broker reports them whether or not you took the cash.
- Are reinvested dividends taxable?
- Yes. Using a dividend to buy more shares does not change that it was paid to you. Keep the record of each purchase, because it becomes part of what those shares cost you.
A stock that has gone up in value is not taxed until you sell it. What is taxed while you hold it is the money the investment pays out, and that includes payments that are automatically used to buy more shares.
Holding is not a taxable event
Your account balance moving is not a tax event. A position that doubled and a position that halved do the same thing to this year's return, which is nothing at all. Tax attaches to a sale, and a sale is what turns a paper gain into a real one. Unrealized describes the first state and realized the second; you will meet both words on a statement and can then put them down. Digital assets are reported on a different track, and crypto taxes and the 1099-DA covers that. Everything below assumes an ordinary taxable brokerage account.
What is taxed while you hold
What is taxed is the cash the investment throws off. A dividend is a share of a corporation's earnings and profits, paid out to you because you hold its stock, and it is income in the year it is paid. Each payer that distributed $10 or more to you should send a Form 1099-DIV, which is why a form arrived even though you never placed a sell order.
The form should break the distribution down into its categories. If yours does not, contact the payer rather than guessing. The first split is between ordinary and qualified dividends. Ordinary dividends are included in ordinary income, while qualified dividends are the ones that qualify to be taxed at the lower capital gain rates, and the payer is the one required to identify which of your dividends are which. Form 1099-INT and Form 1099-DIV carries the rate thresholds, which are not repeated here.
Reinvested dividends are still income
This is the part that catches new investors. Buying more shares with a dividend, at a price matching what those shares are worth, does not take the dividend out of your income. You still report it. The cash never reached your bank account, but it was paid to you and then spent on your instruction, and that is enough.
A plan that lets you buy at less than fair market value works slightly differently. There, the dividend income is what the extra shares were worth on the day the dividend was paid. Any service charge taken out of the cash dividend before it bought those shares is dividend income too.
The second half of this trap pays off years later. Each reinvestment is a purchase, with its own date and its own cost, and that cost is part of what those shares cost you. An investor who never recorded them ends up paying tax on the same money twice: once as a dividend in the year it was paid, and again as gain when the shares are finally sold. Keep your own record of every reinvestment, for as long as you hold the position and long enough after the sale to answer a question about it.
Funds distribute even when you did nothing
Regulated investment companies, meaning mutual funds, exchange traded funds and the like, and real estate investment trusts, may pay capital gain distributions, and a distribution of that kind is long-term capital gain on your return every time. An undistributed capital gain that such a fund assigns to you in a written notice is reportable as well, and reaches you on Form 2439.
Read the practical version twice. A fund can hand you a taxable gain in a year in which its own price fell, because the gain came from what the fund sold inside itself and had nothing to do with anything you did. That amount shows up in box 2a of the form, and Form 1099-INT and Form 1099-DIV walks the boxes.
A distribution that qualifies as a return of capital is not a dividend at all. It is part of your own investment coming back, so instead of being taxed when paid it comes off the adjusted cost basis of the shares. Drive that basis down to nothing, and any nondividend distribution after that point becomes a capital gain you are taxed on.
What to do with the form
Put the numbers from the 1099-DIV where the software asks for them, box by box, rather than typing a single total from the account summary. Keep the year-end statement with the return, and keep your own list of reinvested dividends somewhere it will survive a change of broker. Depending on how much in interest and dividends you received during the year, Schedule B may come into the picture, and the software will raise it when it does.
One last thing worth expecting. A year of larger-than-usual distributions can turn a refund you were counting on into a balance due, because tax is generally not withheld from it. How refunds work explains why that number moves. The day you do sell, capital gains take over, and capital gains and Form 1099-B picks the story up from there.