Individuals cannot carry a capital loss back to a prior tax year. Federal law lets a net capital loss offset gains in the current year and up to $3,000 of ordinary income ($1,500 if married filing separately), with anything left over carrying forward indefinitely. There is one narrow exception: a net loss on Section 1256 contracts can be carried back three years. Everything else moves forward, never backward.
The General Rule for Individuals
When an individual ends the year with a net capital loss, the unused portion becomes a loss in the following tax year. There is no procedure for reopening a prior return to apply this year’s loss against last year’s gains.1Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
The carryforward has no expiration date. A $50,000 loss realized in 2026 can still offset gains in 2040 or later if it hasn’t been fully used. The loss also keeps its character: short-term losses stay short-term, long-term losses stay long-term, and that classification governs how they net against gains in later years.1Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
What Happens to the Loss Instead
Each year’s losses run through a netting sequence. Short-term losses offset short-term gains first, long-term losses offset long-term gains first, and if one category still shows a loss and the other a gain, the loss crosses over. You are left with a single net figure.
If that figure is a net loss, you can deduct the lesser of $3,000 or the total against ordinary income. Married filing separately caps the deduction at $1,500. Anything above the cap carries forward to next year.2Office of the Law Revision Counsel. 26 US Code 1211 – Limitation on Capital Losses
The $3,000 annual drip is not where the real value sits. The bigger benefit is that a carryforward can absorb a large future gain in a single year.
A Simple Example
Suppose you realize a $38,000 net capital loss in 2026, file as single, and have no gains that year. You deduct $3,000 against ordinary income and carry $35,000 forward. In 2027, again with no gains, you deduct another $3,000 and the balance drops to $32,000.3Internal Revenue Service. Topic No. 409, Capital Gains and Losses
In 2028 you sell an investment for a $40,000 long-term gain. The $32,000 carryforward wipes out most of it, leaving only $8,000 taxable. That single offset is worth far more than several years of $3,000 deductions against ordinary income.
Why the Character of the Loss Matters
Short-term gains are taxed at ordinary income rates, which are higher than long-term capital gains rates. A short-term loss carryforward that offsets a short-term gain therefore saves more per dollar than a long-term loss offsetting a long-term gain. The ordering rules also apply short-term losses first against the $3,000 annual deduction, which is a built-in advantage since that deduction reduces ordinary income either way.
The One Real Carryback: Section 1256 Contracts
The blanket no-carryback rule has a single exception, and most individual investors never encounter it. If you trade Section 1256 contracts and finish the year with a net loss on them, you can elect to carry that loss back three years.1Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
Section 1256 contracts include regulated futures contracts, foreign currency contracts traded in the interbank market, nonequity options such as broad-based index options, dealer equity options, and dealer securities futures contracts. Losses on ordinary stocks and bonds do not qualify.4Office of the Law Revision Counsel. 26 US Code 1256 – Section 1256 Contracts Marked to Market
Several conditions apply. The carryback can only offset Section 1256 contract gains from the earlier years, not stock gains or ordinary income. It goes to the earliest of the three preceding years first, and any leftover moves to the next prior year. The carried-back amount is treated as 40% short-term and 60% long-term, matching the standard 60/40 split that Section 1256 contracts already receive.1Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
How to Claim the 1256 Carryback
File Form 1045 within one year after the end of the loss year. Attach Form 6781 and Schedule D for both the loss year and each carryback year. Form 1045 generally produces a faster refund than filing amended returns on Form 1040-X.5Internal Revenue Service. Instructions for Form 1045
Why the Corporate Carryback Doesn’t Help You
The question about individual carrybacks usually starts with the corporate rule. C-Corporations can carry a net capital loss back three years, applying it against capital gains from those years starting with the earliest. Any remaining loss then carries forward, but only for five years, after which the unused portion expires.1Office of the Law Revision Counsel. 26 USC 1212 – Capital Loss Carrybacks and Carryovers
That rule is exclusive to C-Corporations. S-Corporation capital gains and losses pass through to the individual shareholders, who then follow the individual rules: no carryback, $3,000 annual deduction, indefinite carryforward. Owning an S-Corp does not open the door to a carryback.
Carryforwards Die With the Taxpayer
One rule catches families off guard when a large carryforward is sitting on the books. An unused capital loss carryforward expires when the taxpayer dies. It does not transfer to the estate, a surviving spouse, or heirs. The loss can only be deducted on the taxpayer’s final income tax return, subject to the same $3,000 annual limit.6Internal Revenue Service. Decedent Tax Guide
If someone dies with a $200,000 carryforward, only $3,000 of it produces any tax benefit on the final return. The remaining $197,000 disappears. That makes it worth using a large carryforward while alive, for instance by selling appreciated assets to generate gains the carryforward can absorb. Heirs receive a stepped-up basis on inherited assets anyway, so holding those assets until death and leaving a big carryforward behind is the worst of both outcomes.
Keeping Track of the Carryforward
The Capital Loss Carryover Worksheet in the Schedule D instructions calculates the exact carryforward amount, broken out by short-term and long-term character. It is not filed with the return, but it is essential to keep. Losing track of the carryforward means either leaving money on the table or claiming an incorrect amount that invites IRS scrutiny.3Internal Revenue Service. Topic No. 409, Capital Gains and Losses
Retain last year’s worksheet as well, because you need it to enter the correct opening balance on this year’s Schedule D. Investors who switch tax software or go through a major life change often find they cannot reconstruct the number, and the carryforward is only useful if you can prove and apply it.