Do capital loss carryovers expire?

For individuals, an unused net capital loss carries forward to later years with no time limit. Each year it is applied against that year's gains first, and any remainder can reduce wages and other ordinary income by as much as $3,000, or $1,500 if married filing separately, until nothing is left. It generally does not survive the taxpayer's death.

Can I use capital losses to offset dividends?

Qualified and ordinary dividends are not capital gains, so they are not netted against capital losses directly. Once your losses exceed your gains, though, up to $3,000 of the excess can reduce ordinary income for the year, and that income can include your dividends. Capital gain distributions from funds are netted as long-term gains.

How Do Capital Losses Offset Gains and Income on Your Taxes?

Q: How Do Capital Losses Offset Gains and Income on Your Taxes?

You net short-term and long-term gains and losses first. If the result is a net capital loss, up to $3,000 of it offsets ordinary income each year ($1,500 if married filing separately), and the rest carries forward with no time limit under IRS rules. The wash sale rule can disallow a loss if you rebuy the same shares too soon.

Form 8949 is where the year’s sales get listed, one line per lot, and the totals feed Schedule D. By the time you reach the bottom of Schedule D, the form has walked you through the whole offset in a fixed order. Follow it.

How does the netting work, step by step?

List every sale. Each goes on Form 8949 with the date bought, the date sold, the proceeds and the cost basis, sorted into short-term (held one year or less) and long-term (held more than one year). Your broker’s 1099-B supplies most of this.
Net the short-term side. Add up short-term gains and subtract short-term losses to get one net short-term figure.
Net the long-term side the same way.
Combine the two. A net gain on one side absorbs a net loss on the other. If the combined result is a gain, it is taxable, with the character of whichever side is left over. If it is a loss, keep going.
Deduct up to $3,000 of the net loss against ordinary income, such as wages or interest. The limit is $1,500 if you are married filing separately.
Carry the rest forward. Any loss above the limit rolls into next year, where it goes through the same steps again, and it keeps rolling with no time limit until it is used up.

What does it look like with real sums?

Take a hypothetical investor who closed out $8,000 of gains and $15,000 of losses during the year.

The $8,000 of gains is wiped out entirely, so none of it is taxed. Then $3,000 of the leftover loss comes off income that would otherwise be taxed at your marginal tax rate. Next year the $4,000 starts the netting again: if the investor has $4,000 or more of gains next year, the carryover cancels that much of them, and if not, another $3,000 of it can come off ordinary income.

The carryover keeps its character. A long-term loss carried forward is treated as long-term the following year, and a short-term loss stays short-term. The IRS worksheet in the Schedule D instructions sorts that out.

Why does the order matter?

Because short-term and long-term gains are taxed differently. Short-term gains are taxed at ordinary rates. Long-term gains usually get lower rates. A loss that wipes out short-term gains saves more tax per dollar than one that absorbs long-term gains, and the netting order fixes which gains each loss meets first: losses meet gains on their own side before crossing over.

That is one reason the holding period matters so much to anyone who both trades and invests, a split covered in investing vs trading.

What can take the loss away?

The wash sale rule. If you sell shares at a loss and buy substantially identical shares within 30 days before or after the sale, the IRS disallows the loss for that year. The window runs both ways, so buying first and selling the old lot a week later counts too.

The loss is deferred. It gets added to the cost basis of the replacement shares, so you recover it when you eventually sell those, but it cannot be used in the year you were counting on. Traders who sell a loser in December and buy it back in early January often find this out from their 1099-B, which will usually flag the adjustment.

What else should you check?

Keep your own record of carryovers. Your broker reports each year’s sales. It does not know about a loss carried from three returns ago, and the only place that figure lives is your prior Schedule D and its worksheet.

Look at where the $3,000 lands. It reduces ordinary income, so its value depends on your bracket, while a loss used against long-term gains saves tax at the lower long-term rate. Neither is a reason to take a loss you would not otherwise take.

A large carryover can also shape how you plan the next few years, including when to realize gains on long-held positions, and how much cash you keep outside the market so that a bad year never forces a sale at the worst moment, which is the argument in an emergency fund as a margin of safety. Margin interest has its own deduction and limit, set out in whether margin interest is tax deductible. Situations differ, so confirm the figures with whoever prepares your return. More on long-horizon decisions sits in the investing section.