Abstract editorial illustration for a finance article about cryptocurrency tax-loss harvesting and the IRC §1091 property-classification gap. Flat vector composition in electric blue and gold: a geometric hexagonal digital-asset token with a gold property-deed tag attached, connected by two paired directional arrows forming a continuous sell-and-rebuy cycle loop. A faded calendar element in the background suggests the absent wash-sale waiting period that does not currently apply to property-class assets under existing IRS guidance.
Cryptocurrency's classification as property under IRS Notice 2014-21 places it outside IRC §1091's wash-sale rule, which applies only to stock and securities. That structural gap may allow crypto investors to sell at a loss and immediately repurchase the same asset without the mandatory waiting period or substantially-identical-safe replacement logic that governs equity tax-loss harvesting under current law.

The wash-sale rule is one of the most consequential constraints in tax-loss harvesting. But for one asset class, it largely does not apply — and that structural gap changes the harvest math significantly.

Cryptocurrency is currently classified as property under IRS guidance, not a security. Because IRC §1091 applies only to stock and securities, the wash-sale rule generally does not reach crypto losses. An investor can sell Bitcoin at a loss, buy it back within the same trading session, and still recognize the capital loss — without waiting through any 30-day window or selecting a substantially identical replacement.

That exemption has attracted legislative scrutiny for years, but as of this writing no broad wash-sale extension to crypto had been enacted into law. Understanding both the gap and the outstanding proposals is relevant for anyone managing a tax-aware portfolio that includes digital assets.

Why crypto sits outside §1091

Why does the wash-sale rule not currently apply to cryptocurrency?

IRS Notice 2014-21 established that virtual currency is treated as property for federal tax purposes — not as stock or a security — and IRC §1091 disallows wash-sale losses only on "stock or securities," leaving crypto transactions outside its reach under existing authority.

The statutory language of §1091 specifically names "stock or securities." When Congress wrote the wash-sale rule, cryptocurrencies did not exist. The IRS subsequently classified digital assets as property — analogous in treatment to gold or collectibles rather than to shares of stock — and that classification has not been revised by statute.

For tax purposes, the result is clear: property can be sold and repurchased without triggering the loss-disallowance mechanism. A realized loss on a crypto position is generally available for offset in the current tax year regardless of whether the same asset is repurchased the next day.

For background on the §1091 mechanism itself, see the wash-sale rule explainer and the IRS code cheat sheet for TLH.

PROPERTY Cryptocurrency IRS Notice 2014-21 classification §1091 does not apply vs SECURITY Stock & Securities IRC §1091 classification §1091 wash-sale applies
Under IRS Notice 2014-21, cryptocurrency is classified as property for federal tax purposes, placing it outside the stock-and-securities scope of IRC §1091's wash-sale rule. Stock and other securities remain subject to §1091's loss-disallowance mechanism, requiring a substantially-identical-safe replacement security during the 61-day window.

What this enables for loss harvesting

How does the §1091 property-class exemption change loss-harvesting strategy for crypto positions?

Because there is currently no required waiting period, many crypto investors harvest losses continuously — selling a losing position, capturing the realized loss for tax purposes, and rebuying the same asset to maintain market exposure, without the replacement-security friction that governs stock harvesting.

This is a meaningful structural difference from equity TLH. Stock investors must identify a substantially identical-safe replacement, hold it through the 61-day window, and then decide whether to return to the original position. Crypto investors face none of that friction under current law — immediate rebuy is permissible and widely practiced.

The tradeoff is that tax-lot tracking becomes more important, not less. Each buy and sell is a separate realization event — short-term or long-term depending on the holding period — and basis must be tracked per lot. The lot selection method (FIFO, HIFO, specific-ID) can meaningfully change the tax outcome on each transaction, just as it does for stock positions.

Abstract illustration of the crypto tax-loss harvest cycle. A continuous blue circular arrow loop connects two identical geometric token shapes, representing the sell-and-immediately-rebuy pattern possible under cryptocurrency's IRS property classification. A gold highlight marker on the sell-side of the loop represents the realized loss captured for tax purposes. The unbroken loop contrasts with the blocked 61-day waiting period that governs equity tax-loss harvesting under IRC §1091.
The structural difference between crypto and equity tax-loss harvesting lies in the mandatory waiting period: under the IRS property classification, a crypto position may be sold at a loss and immediately repurchased to maintain market exposure, whereas equity harvesting requires a replacement security through the 61-day §1091 window. Lot-level basis tracking is equally important in both cases, since each transaction is a separately recognized gain or loss event.

Legislative proposals to close the gap

Have lawmakers attempted to extend wash-sale rules to cryptocurrency?

Multiple legislative proposals since 2021 — including provisions in the Build Back Better framework, the Wyden-Brown Crypto Tax Fairness Act, and several subsequent budget packages — sought to extend §1091 to digital assets, though as of this writing none had been enacted into law.

The most prominent attempt was the 2021 Build Back Better Act, which included a provision treating digital assets as securities for wash-sale purposes, with an effective date of January 1, 2022. That bill passed the House but stalled in the Senate and did not become law.

Subsequent proposals have included similar language, often paired with mark-to-market accounting and definitions of "digital asset" broad enough to cover most major coins, tokens, and stablecoins. The argument for closing the gap is symmetry: investors in stocks and investors in crypto should face the same rules. The argument against is definitional complexity — classifying tokens, stablecoins, and wrapped assets as "securities" raises questions that go well beyond wash-sale treatment.

The Trump administration's crypto-friendly regulatory posture has made near-term enactment of wash-sale extension less likely, but the proposals have not disappeared from the legislative calendar. The specific effective dates attached to any enacted legislation would determine when existing harvesting strategies would need to change — a key detail for any investor monitoring this space.

1 2021 Build Back Better Act House passed; Senate stalled, not enacted 2 2022 – 2024 Subsequent Proposals Wyden-Brown + budget packages; not enacted 3 As of writing No Extension Enacted §1091 property-class exemption in effect
Multiple legislative proposals since 2021 have sought to extend IRC §1091's wash-sale provisions to digital assets — including the 2021 Build Back Better Act and the Wyden-Brown Crypto Tax Fairness Act — though as of this writing none had been enacted into law. The effective date of any such legislation would be the critical variable for investors who rely on same-day rebuy strategies.

Gray areas even without a wash-sale rule

Are there existing tax rules that may still complicate crypto loss harvests even without §1091 applying?

Yes: stablecoin and wrapped-token transactions, basis-reporting requirements under IRC §6045, and constructive sale rules under §1259 can create complications for crypto loss harvests even without §1091's loss-disallowance mechanism applying directly.

A few specific gray areas worth understanding:

  • Wrapped tokens. If wBTC (wrapped Bitcoin on Ethereum) were treated as substantially identical to BTC for tax purposes, a sale of BTC paired with a wBTC purchase could potentially trigger wash-sale analysis — though the IRS has not issued definitive guidance on this specific case.
  • Broker reporting under §6045. IRC §6045 now requires brokers and exchanges to report crypto transactions on Form 1099-DA (applicable for 2025 transactions and forward). Accurate basis reporting at the lot level is no longer optional — discrepancies between exchange-reported basis and actual per-lot basis need to be caught and reconciled before filing.
  • Constructive sale rules. IRC §1259 can treat certain hedging positions as constructive sales — a separate mechanism from §1091 that may affect investors who hedge crypto exposure with short positions or futures contracts.
  • Stablecoin basis tracking. When a loss harvest involves selling crypto and holding the proceeds in a stablecoin before rebuying, basis on the stablecoin positions themselves must be tracked. Stablecoins are also property under IRS guidance and subject to capital gains analysis on disposition.
WRAPPED TOKENS Substantially Identical? wBTC vs. BTC: no definitive IRS guidance on cross-chain token equivalence §6045 REPORTING Broker Cost-Basis Reports Form 1099-DA required for 2025 transactions forward CONSTRUCTIVE SALES IRC §1259 Hedging Positions Short positions or futures contracts may trigger constructive-sale treatment STABLECOIN BASIS Proceeds Basis Tracking Stablecoins are property; basis must be tracked on each disposition
Four categories of tax complexity that may affect cryptocurrency positions independently of IRC §1091's wash-sale rule: wrapped-token substantially-identical classification uncertainty, broker cost-basis reporting under §6045, constructive-sale rules under §1259, and stablecoin basis tracking requirements. Each applies under existing authority regardless of whether the §1091 property-class exemption remains in place.

Basis tracking as property

How does the IRS property classification affect the mechanics of tracking cost basis for crypto positions?

As property, each crypto transaction is a separately trackable realization event — gains and losses are recognized per lot, and investors can typically designate specific lots for disposition, just as they can for stock, to manage the tax outcome per transaction.

This is both an opportunity and an administrative challenge. An investor who has accumulated Bitcoin through periodic purchases over multiple years may have hundreds of individual tax lots, each with a different basis date and cost. Choosing which lots to sell — the highest-basis lots for a harvesting transaction, or the lowest-basis lots for intentional gain realization — requires lot-level records that many basic exchange reports do not provide cleanly.

For a thorough treatment of the methods available, see how lot selection changes your tax bill. The substantially-identical analysis covered in what counts as substantially identical under §1091 does not currently apply to crypto in the same way, but the basis mechanics operate identically to stock under the IRS property framework.

Lot 1 Earliest acquisition Lower cost basis GAIN Not a harvest candidate Lot 2 Mid-period acquisition Higher cost basis LOSS Harvest candidate Lot 3 Recent acquisition Highest cost basis LOSS HIFO priority Largest realized loss
Cryptocurrency positions accumulate multiple tax lots over time, each with a distinct acquisition date and cost basis. Lot-level tracking enables harvest decisions to target specific lots — with a highest-basis-first (HIFO) approach prioritizing the lots most likely to produce the largest realized loss per sale event. The same lot-selection logic applies here as in equity harvesting, since the IRS property framework governs both on a per-lot basis.

What to watch on the regulatory horizon

What are the key developments for crypto investors monitoring whether the §1091 gap will close?

The two primary signals are any enacted legislation formally extending §1091 to digital assets, and IRS guidance clarifying whether specific token categories — wrapped tokens, staking rewards, DeFi positions — face different treatment from straightforward coin purchases and sales.

If wash-sale rules are extended to crypto, investors who have been harvesting losses with same-day rebuys would face two changes: a mandatory waiting period (or replacement-asset strategy) and a basis-carryover mechanism on disallowed losses — the same regime that governs stock harvesting today. The effective date of any such legislation would determine whether in-progress harvesting strategies need to be restructured before that date.

A practical approach for investors who value the current exemption is to maintain clean, lot-level basis records throughout. If the law changes, well-organized records make it significantly easier to reconstruct the tax history and comply with any new reporting requirements accurately.

Read this next with the wash-sale rule demystified, what counts as substantially identical under §1091, the IRS code cheat sheet for TLH, and how lot selection changes your tax bill.

See how HarvestEngine handles lot-level tax tracking