Brokerage account taxes: what investors need to know

A taxable brokerage account is one of the most flexible ways to invest. There are generally no contribution limits, no retirement-account early withdrawal penalties, and no age-based restrictions on when you can take your money out of the market.

But that flexibility comes with a tradeoff. Unlike a tax-advantaged retirement account, a taxable brokerage account can generate taxes in a given year, even if you do not make any deliberate moves. Knowing how these accounts are taxed and what might trigger a tax bill is a useful starting point in managing these taxes.

Are brokerage accounts taxable?

Yes. A standard brokerage account is a taxable account. In a retirement account like an IRA or 401k, investment growth is generally tax-deferred or tax-exempt. However, in a taxable brokerage account, the tax treatment works differently.

The important distinction is between owning investments and triggering a taxable event. Simply holding an investment that has increased in value does not generally result in a tax bill. Taxes are generally triggered by specific events such as receiving income like dividends or interest, or realizing a gain by selling an appreciated investment.

Both annual income and realized sales can matter in a given year. You might owe tax on dividends you receive even if you never sold a single share, or you might owe tax on a capital gain from a sale even in a year when the rest of your portfolio declined.

What gets taxed in a brokerage account?

Several types of activity in a brokerage account can create a tax liability, including:

Dividends: Dividends are generally taxable in the year they are received, whether they are taken as cash or reinvested. Qualified dividends are generally taxed at lower capital gains rates, while ordinary dividends are generally taxed at ordinary income rates.

Interest: Interest from bonds, money market funds, certificates of deposit, and similar holdings is generally taxed as ordinary income.

Realized gains: When an investment is sold for more than its cost basis, the difference is a taxable capital gain. The holding period determines whether it is taxed at short-term or long-term rates.

Fund distributions: Mutual funds and some other pooled investments may distribute capital gains to shareholders, which can leave investors owing tax on those distributions even if they did not sell shares themselves.

Capital losses: When an investment is sold for less than its cost basis, the result is a capital loss. Losses can generally offset capital gains, and a limited amount of net capital loss may offset ordinary income, with the remainder carried forward to future years.

Different types of assets can produce different combinations of these. A bond fund may generate primarily interest income, a dividend-focused stock fund may generate dividends and occasional distributions, and an individual stock held without selling may generate only dividends until it is sold.

Realized vs. unrealized gains

One of the most useful distinctions for understanding brokerage account taxes is the difference between realized and unrealized gains.

An unrealized gain is appreciation on an investment that the investor still holds. If a stock purchased at $50 per share is now worth $80, the $30 per share increase is an unrealized gain. It is not taxed, because no sale has occurred.

A realized gain happens when an investment is sold. If that same stock is sold at $80, the $30 per share gain becomes realized and is generally taxable for the year of the sale.

This is why an investor can hold an appreciated portfolio for years without owing capital gains tax on the appreciation. Dividends and distributions are taxed along the way, but the appreciation itself is generally not taxed until it is realized.

Unrealized gains still matter for planning, though. A large unrealized gain may represent a future tax liability if the position is sold. Knowing where those embedded gains sit in a portfolio is part of planning a tax-aware approach to selling and rebalancing.

Short-term vs. long-term capital gains

When a gain is realized, the length of time the investment was held determines how it is taxed.

Short-term capital gains:

• Applies to investments held for one year or less before being sold
• Taxed at ordinary income rates

Long-term capital gains:

• Applies to investments held for more than one year
• Generally may be taxed at preferential rates that are lower than ordinary income rates for many investors.

The holding period is measured from the day after the purchase to the day of the sale, and the impact it can have on the tax owed is why holding-period awareness is a common element of tax-aware investing.

Cost basis and why it matters

Cost basis is the amount you pay for a given investment, and it is used to determine the taxable gain or loss when the investment is sold. In its simplest form, basis is the purchase price plus any associated costs. A sale above basis generally produces a gain, while a sale below basis generally produces a loss.

However, several situations can make cost basis more complicated:

Tax lots: When shares of the same investment are purchased at different times and prices, each purchase is a separate tax lot with its own basis. When selling only part of a position, which lots are sold can affect the size of the gain or loss.

Reinvested dividends: When dividends are reinvested to buy additional shares, those purchases create new tax lots with their own basis. Reinvested dividends were already taxed as income when received, so tracking their basis helps avoid being taxed again on the same amount when the shares are sold.

Inherited stock: Inherited investments generally receive a stepped-up basis to their fair market value as of the date of the original owner’s death, which can significantly reduce the taxable gain when the heir sells.

Equity compensation shares: For shares acquired through RSUs, stock options, or employee stock purchase plans, the cost basis is often tied to the value already recognized as income at vesting or exercise.

Common brokerage tax forms

Brokerages report taxable activity to investors and to the IRS each year on a set of standard forms.

• 1099-B: Reports proceeds from the sale of securities. This is the form used to calculate capital gains and losses from sales.
• 1099-DIV: Reports dividend income and capital gains distributions from funds, including the breakdown between qualified and ordinary dividends.
• 1099-INT: Reports interest income earned during the year.
• Consolidated 1099: Many brokerages combine these and other relevant forms into a single consolidated 1099, which simplifies reporting.

Brokerages sometimes issue corrected 1099s after the original, particularly if a fund reclassifies a distribution after the initial form was sent. Investors who file very early occasionally need to amend a return if a corrected form arrives later.

Planning opportunities in taxable brokerage accounts

Because brokerage accounts generate taxes through identifiable events, there are corresponding opportunities to plan around them.

Tax-loss harvesting: Selling positions at a loss to offset realized gains can reduce the tax owed in a given year.

Holding-period awareness: Being mindful of the one-year threshold before selling can affect whether a gain is taxed at short-term or long-term rates.

Asset location: Holding tax-inefficient investments in tax-advantaged accounts and tax-efficient investments in taxable accounts may help reduce the overall tax burden of a portfolio.

Charitable giving: Donating appreciated securities can allow you to give while potentially avoiding the gain that selling would have triggered.

Tax-aware selling: When raising cash or rebalancing, choosing which lots to sell and which year to realize gains can affect the tax result.

Gain and loss planning: Coordinating the timing of realized gains and losses across a tax year, and across multiple years, can help manage the overall tax impact.

FAQ

Do I pay taxes on a brokerage account if I do not sell?

Sometimes. Even without selling anything, you might owe tax on dividends, interest, and capital gains distributions received during the year, all of which are generally taxable whether taken as cash or reinvested.

How are dividends taxed in a brokerage account?

Dividends are generally taxable in the year they are received. Qualified dividends, which meet certain holding-period and other requirements, are generally taxed at lower long-term capital gains rates, while ordinary dividends are generally taxed at ordinary income rates.

What is a 1099-B?

Form 1099-B is the tax form a brokerage uses to report proceeds from the sale of securities during the year. It typically includes the sale proceeds and, in many cases, the cost basis.

Are brokerage losses deductible?

Capital losses can generally be used to offset capital gains, with any remaining loss carried forward to future years. The specific limits and rules are set by the IRS, and a tax professional can help apply them to your individual situation.

What is cost basis in a brokerage account?

Cost basis is used to determine the taxable gain or loss when an investment is sold, and is generally the purchase price plus associated costs.