You can deduct up to $3,000 of net capital losses against ordinary income each tax year, or $1,500 if you file as married filing separately. That cap only kicks in after your capital losses first offset your capital gains dollar for dollar, with no limit on that offset. Anything left over after both steps carries forward to future years until it is used up.
Losses Cancel Gains Before They Touch the $3,000 Cap
The $3,000 figure describes the last step, not the first one. Before any loss reduces your wages or interest income, you have to net your capital losses against your capital gains for the same year. Short-term losses (assets held one year or less) reduce short-term gains first, and long-term losses (assets held more than one year) reduce long-term gains first.1Office of the Law Revision Counsel. 26 USC 1222 – Other Terms Relating to Capital Gains and Losses If a surplus remains in one category after all the gains there are wiped out, it crosses over to offset gains in the other category.
The order matters because the two gain types are taxed differently. Long-term gains get preferential rates; short-term gains are taxed at your ordinary income rate. Netting within each bucket first preserves the favorable long-term rate on as many gains as possible. Only after every gain in both categories has been absorbed does what’s left become available to reduce ordinary income, and only then does the $3,000 ceiling come into play.
The $3,000 Annual Limit Against Ordinary Income
Once your losses have swallowed every capital gain and there is still net loss remaining, you can subtract up to $3,000 of it from other taxable income, such as wages, salary, or interest. Married filers using the separate filing status are capped at $1,500 each.2Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses
The size of the actual loss doesn’t change this year’s deduction. A $4,000 net capital loss and a $50,000 net capital loss both produce a $3,000 deduction in the current year. What differs is how much rolls into next year.
The $3,000 cap has been in place since 1978 and is not indexed for inflation, so its purchasing power has shrunk over the decades. The deduction reduces your adjusted gross income, which can improve your standing for credits and deductions that phase out at higher AGI levels.
What Happens to the Rest: Capital Loss Carryovers
Whatever you can’t deduct this year doesn’t disappear. Any net capital loss above the $3,000 (or $1,500) limit carries forward automatically to the next tax year, and for individuals there is no expiration. You keep carrying it forward year after year until it is fully absorbed.3Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
Carryovers keep their original character. A long-term loss carried into next year stays long-term and offsets long-term gains before touching short-term gains. Short-term stays short-term. When you apply carryovers in a future year, short-term losses are used first, even if the long-term loss actually occurred in an earlier year.4Internal Revenue Service. Publication 550 – Investment Income and Expenses
Each year you repeat the same sequence: apply your carryover against any new capital gains, deduct up to $3,000 of the remaining net loss from ordinary income, and roll the rest into the following year. The Capital Loss Carryover Worksheet in the Schedule D instructions walks the math step by step.5Internal Revenue Service. Instructions for Schedule D (Form 1040) Recordkeeping matters. Once you lose track of the balance across tax years, the benefit is effectively gone.
When Your Taxable Income Is Already Zero
If your taxable income before the capital loss deduction is already zero or negative (because other deductions have wiped it out), you don’t actually use the full $3,000 that year. For carryover purposes, the amount treated as used is limited to your adjusted taxable income, which can be zero or negative. More of the loss survives to future years, but you get no current-year tax savings from that portion.3Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
Losses That Don’t Count Toward the Deduction
Not every loss on a sale makes it into the math above. Several categories of losses are either permanently disallowed or shifted into the future.
Personal-Use Property
Losses from selling personal items such as your home, car, or furniture are not deductible at all. The IRS treats them as personal expenses rather than investment losses.6Internal Revenue Service. Topic No. 409 – Capital Gains and Losses Only losses from property held for investment or used in a trade or business qualify.7Internal Revenue Service. Losses (Homes, Stocks, Other Property)
Wash Sales
If you sell a stock or security at a loss and buy a substantially identical one within 30 days before or after the sale, the loss is disallowed for the year.8Office of the Law Revision Counsel. 26 USC 1091 – Loss From Wash Sales of Stock or Securities The loss isn’t gone forever; it is added to the cost basis of the replacement shares, deferring the benefit until you eventually sell those without triggering another wash sale.9eCFR. 26 CFR 1.1091-1 – Losses From Wash Sales of Stock or Securities Claiming a disallowed wash sale loss can trigger the accuracy-related penalty of 20% of the underpaid tax.10Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
Sales to Related Parties
You cannot deduct a loss on a sale to a related party. For individuals that includes your spouse, siblings (including half-siblings), parents, grandparents, children, and grandchildren, and it also covers a corporation or partnership you control and certain trusts.11Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Taxpayers These losses are simply disallowed, though if the related-party buyer later sells the asset at a gain, that buyer can reduce their gain by the previously disallowed amount.
An Exception: Ordinary Loss Treatment for Section 1244 Stock
Losses on qualifying small business stock can bypass the $3,000 cap entirely. Under Section 1244, if you bought stock directly from a domestic corporation that had received no more than $1,000,000 in total capital contributions at the time of issuance, you can treat the loss as an ordinary loss rather than a capital loss. That means the loss reduces ordinary income without the $3,000 ceiling.12Office of the Law Revision Counsel. 26 USC 1244 – Losses on Small Business Stock
Ordinary treatment has its own ceiling: $50,000 per year for single filers, or $100,000 on a joint return. Any loss above that reverts to capital loss treatment and follows the standard netting and carryover rules. The stock must have been issued for cash or property, not in exchange for other stock or securities, and the corporation generally must have earned more than half its revenue from active business operations rather than passive income during its five most recent tax years.12Office of the Law Revision Counsel. 26 USC 1244 – Losses on Small Business Stock
How to Claim the Deduction on Your Return
Three forms carry the numbers from your brokerage to your 1040. Your broker sends Form 1099-B after year-end showing the proceeds and cost basis of each sale.13Internal Revenue Service. Instructions for Form 1099-B (2026) You list each transaction on Form 8949, separating short-term from long-term and noting acquisition date, sale date, proceeds, and cost basis. The totals flow onto Schedule D, which is where the netting between short-term and long-term happens. The final figure from Schedule D transfers to Form 1040, capped at the $3,000 (or $1,500) limit against ordinary income.
If your 1099-B already shows the correct cost basis and no adjustments are needed, you may be able to skip Form 8949 and report certain transactions directly on Schedule D. The checkbox on the 1099-B tells you which path applies.
If you have a carryover into next year, keep a copy of the current year’s Schedule D and Form 1040. You will need both to complete the Capital Loss Carryover Worksheet in the following year’s Schedule D instructions.