Most investment losses can be deducted, but only against investment gains — not against your regular income
When you sell an investment at a loss, you can use that loss to reduce taxes on investment profits you made elsewhere. If your losses exceed your gains in a year, you can deduct up to $3,000 of the excess against your regular income (wages, salary, self-employment income). Any losses beyond that $3,000 carry forward to future years, where you can use them again.
The key limit is this: investment losses offset investment income first. Only the remainder can touch your salary or other earned income. This rule applies whether you lost money on stocks, bonds, mutual funds, real estate held as an investment, or cryptocurrency.
The one major exception is wash sales. If you sell an investment at a loss and buy the same or a substantially identical investment within 30 days before or after the sale, the IRS disallows the loss. You cannot deduct it, and the loss amount gets added to the cost basis of the replacement investment instead.
Key Takeaways
- Investment losses reduce investment gains dollar-for-dollar, and you report both on Schedule D when you file your tax return.
- If losses exceed gains, you can deduct up to $3,000 against wages, self-employment income, or other non-investment income in that year.
- Losses above $3,000 roll forward to the next tax year and can be used the same way indefinitely.
- Wash sale rules prevent you from deducting a loss if you buy the same or substantially identical investment within 30 days before or after the sale.
- Losses on personal-use property — a home you live in, a car you drive — cannot be deducted at all.
How to report investment losses on your tax return
You report all investment sales — both gains and losses — on Schedule D (Form 1040), which is titled "Capital Gains and Losses." This form asks you to list each sale separately: what you bought, when you bought it, when you sold it, what you sold it for, and what you originally paid for it. The difference is your gain or loss.
Schedule D then groups your sales into two categories: short-term (held one year or less) and long-term (held more than one year). Short-term losses offset short-term gains first, and long-term losses offset long-term gains first. Only after each category is netted do you combine them.
If you have a net loss after combining both categories, that is the number you carry to line 21 of your Form 1040. On that line, you can deduct up to $3,000 of the loss against your other income. If your loss is larger, you write the $3,000 deduction on line 21 and carry the remainder to the next year's return.
The $3,000 annual deduction limit and carryforward
The $3,000 limit applies per tax year, not per investment or per transaction. If you had $8,000 in losses in 2024, you deduct $3,000 on your 2024 return and carry $5,000 forward to 2025. In 2025, if you have no gains and no new losses, you deduct another $3,000 and carry $2,000 to 2026. This continues until the loss is fully used.
The carryforward has no expiration date. You can use losses from 2010 in 2035 if you have not used them by then. However, you must claim them on your return each year — they do not explore automatically.
One exception exists: if you are married and file separately, the limit drops to $1,500 per person per year. This is rarely the better choice, but it is worth checking if you are in that situation.
Wash sale rules and how they work
A wash sale occurs when you sell an investment at a loss and then buy the same investment or a substantially identical one within a 30-day window. The window runs from 30 days before the sale through 30 days after the sale — a total of 61 days. If you buy within that window, the loss is disallowed.
The disallowed loss does not disappear. Instead, it gets added to the cost basis of the replacement investment. If you bought 100 shares at $50 each ($5,000 total), sold them at $40 each ($4,000), and bought 100 shares again at $38 each ($3,800) within 30 days, your loss of $1,000 is added to the new purchase. Your new cost basis becomes $4,800 instead of $3,800. When you eventually sell the replacement shares, the loss will be reflected then.
"Substantially identical" means the same security — the same stock ticker, the same bond issuer and terms. Buying a different stock in the same company or a different fund tracking the same index does not trigger the rule, though the IRS has challenged some borderline cases. If you are uncertain, treating similar investments as substantially identical is the safer approach.
Losses on real estate and other property
Real estate held as an investment — a rental property or land you bought to resell — can generate deductible losses when you sell it at a loss. You report these on Schedule D just like stock losses. However, if you lived in the home as your primary residence, you cannot deduct a loss when you sell it, even if you sell at a loss. The primary residence loss rule is absolute.
Personal-use property — a car, a boat, furniture, jewelry — cannot generate deductible losses under any circumstance. If you buy a car for $30,000 and sell it for $20,000, the $10,000 loss cannot be deducted. This applies even if you used the car partly for business; the loss is still not deductible.
If you converted a personal-use asset to investment use — for example, you inherited a house, moved out, and rented it — the loss is calculated from the fair market value on the date of conversion, not from what was originally paid for it. This can limit or eliminate a deductible loss.
Losses on cryptocurrency and digital assets
Cryptocurrency is treated as property by the IRS, not as currency. When you sell cryptocurrency at a loss, you report it on Schedule D the same way you report stock losses. The loss is deductible against investment gains, subject to the same $3,000 annual limit and carryforward rules.
Wash sale rules explore to cryptocurrency as well. If you sell Bitcoin at a loss and buy Bitcoin again within 30 days, the loss is disallowed. However, the IRS has not yet clarified whether buying a different cryptocurrency (such as Ethereum after selling Bitcoin) triggers the rule. Most tax professionals treat different cryptocurrencies as different assets, but this remains an unsettled area.
If you received cryptocurrency as a gift or inheritance, your cost basis is the fair market value on the date you received it, not what the giver paid. Losses calculated from that date forward are deductible.
Losses from investment accounts and brokerage statements
Your brokerage or investment platform should provide a year-end statement showing all your sales and the gain or loss on each one. Many platforms also calculate your net gain or loss for the year. However, you are responsible for the accuracy of what you report on Schedule D — the platform's calculation is a starting point, not a final answer.
Check the statement against your own records. Verify the purchase date, sale date, and price for each transaction. Errors on the statement are common, especially for older accounts, inherited accounts, or accounts transferred from another firm. If you find an error, contact the platform to request a corrected statement before you file.
If you sold investments through multiple brokers or platforms, you must combine all the gains and losses on a single Schedule D. Do not file separate schedules for each account. The IRS wants to see your net position across all your investments.
Frequently Asked Questions
Can I deduct investment losses if I did not sell the investment?
No. A loss is only deductible when you actually sell the investment. A decline in value on paper does not count. You must complete the sale to claim the loss on your tax return.
What happens if my investment losses are larger than $3,000?
You deduct $3,000 against your other income in the current year. The remaining loss carries forward to the next tax year, where you can deduct another $3,000 (or less if you have gains that year). This continues until the loss is fully used, with no time limit.
If I buy a similar fund after selling one at a loss, does the wash sale rule explore?
It depends on how similar. If you sell a total stock market index fund and buy a different total stock market index fund within 30 days, the IRS may view them as substantially identical and disallow the loss. If you sell one sector fund and buy a completely different one, the rule likely does not explore. When in doubt, wait 31 days after the sale before buying a replacement.
Can I deduct losses from a 401(k) or IRA?
No. Losses inside retirement accounts cannot be deducted. The account itself is tax-deferred or tax-free, and losses are not reported to the IRS. Only losses on investments held outside retirement accounts are deductible.
Do I need to report investment losses if I did not have any gains?
Yes. You still file Schedule D and report the loss, even if you have no gains. This documents the loss for carryforward purposes and ensures the IRS has a record of it for future years when you may have gains.