Wash sales: what every bitcoin investor should know
Sell a stock at a loss and buy it back within 30 days, and the IRS disallows the deduction. Crypto is treated differently, because the tax code counts it as property. Here is where that leaves bitcoin investors in 2026.
The wash sale rule is one of the oldest anti-abuse tools in the tax code. It stops investors from booking a loss on paper while keeping the same position in practice. If you have traded stocks, you have probably bumped into it. If you trade crypto, the rule works differently, and the difference is worth real money at tax time.
Here is what the rule does, why it currently leaves bitcoin alone, and the limits of that gap.
What a wash sale actually is
You can deduct a capital loss when you sell an asset for less than you paid for it. The wash sale rule, in Section 1091 of the tax code, takes that deduction away if you buy back the same or a substantially identical security within 30 days before or after the sale. The window runs both directions, so a repurchase shortly before the sale can trigger it too.
An example makes it concrete. You buy 100 shares at $10, the price falls to $5, and you sell for a $500 loss. If you rebuy those 100 shares a few days later at $5, you are back where you started, and the $500 was never really out of your pocket. Section 1091 disallows that loss. The amount is not gone for good: the disallowed loss gets added to the cost basis of the replacement shares, so you recover it when you eventually sell for real.
The key phrase in the statute is "stock or securities." That is the language that decides whether crypto is caught.
Why crypto sits outside the rule
In Notice 2014-21, the IRS said convertible virtual currency is treated as property for federal tax purposes, not as currency and not as a security. That classification is still in force in 2026, and it is the reason the wash sale rule does not reach most crypto. Section 1091 applies to stock or securities, and a coin the IRS treats as property is neither.
The practical result: if you sell bitcoin at a loss and rebuy it minutes later, the loss is generally allowed, even though the same trade in a stock would be disallowed. Some investors use this to harvest losses without giving up their position. As property, crypto still follows the normal capital gains rules, including the holding-period split between short-term and long-term rates.
One caveat matters. A handful of digital assets may themselves be treated as securities depending on how they were issued and marketed. If a specific token falls into that category, the wash sale rule can apply to it. When you are unsure how a particular asset is classified, that is a question worth asking before you rely on the loss.
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Being allowed to claim a loss is not the same as deducting all of it this year. Capital losses first offset your capital gains. If losses exceed gains, you can deduct up to $3,000 of the excess against ordinary income for the year, or $1,500 if you are married filing separately. Anything left over carries forward to future years with no expiration, and it keeps its short-term or long-term character.
So a large crypto loss is not wasted if you cannot use it all at once. It sits on your return and reduces future gains or income until it runs out.
What could change, and how to stay ready
The gap for crypto is a matter of statutory wording, and Congress can close it. Lawmakers have proposed extending the wash sale rule to digital assets several times since 2021, including in the version of the Build Back Better bill the House passed that year and in later budget proposals. As of 2026, none of those proposals has become law, so the rule still does not apply to crypto held as property. That could change in any tax year, and a change would most likely apply going forward rather than to prior returns.
Reporting has already tightened even though the wash sale rule has not moved. Brokers began issuing Form 1099-DA for digital asset sales starting with the 2025 tax year, reporting gross proceeds to you and to the IRS, with cost basis reporting phasing in after that. The agency also asks every filer the digital asset question near the top of Form 1040. In short, the IRS now sees far more of your activity than it did when this topic first came up, so the case for reporting cleanly is stronger than ever.
There is also a separate limit on aggressive round-trip trading. Even without a wash sale rule, the IRS can challenge a transaction that has no purpose other than generating a loss under the economic substance doctrine. Selling and rebuying at genuine market prices, with a real risk that the price moves against you in between, is on firmer ground than a same-second sale and repurchase designed purely for the deduction.
If you are claiming crypto losses this year
- Keep exchange and wallet records that show the date, amount, and price for each sale and repurchase.
- Track cost basis per lot so you can prove the size of each loss if asked.
- Confirm how any unusual token is classified before treating a loss on it as a non-security.
- Reconcile what you report against any Form 1099-DA you receive, and explain differences rather than ignoring them.
- Treat the current treatment as the current treatment, not a permanent guarantee, and revisit it each year.
The short version: in 2026 the wash sale rule still does not apply to crypto held as property, the $3,000 annual limit governs how fast you use a net loss, and both the law and the reporting around it are moving. Report accurately, keep your records, and the loss is yours to use.