You can sell a losing crypto position on a Tuesday and buy it right back on Wednesday, and the IRS still won't stop you from claiming the loss — a stock investor doing the same thing would have that deduction disallowed. That gap exists because of one narrow word in the tax code: "securities." As of mid-2026, that gap is still open, despite years of proposals to close it. Here's exactly why it exists, how to use it without tripping over the parts that are settled, and why you shouldn't assume it lasts forever. (For a more detailed breakdown of the mechanics behind the crypto wash sale rule itself, that companion piece is worth reading alongside this one.)
Disclaimer:
This article should not be considered tax or legal advice and is provided for informational purposes only. Please consult a tax professional for your specific tax situation.
Key Takeaways
- The wash sale rule under IRC Section 1091 only applies to "stock or securities," and the IRS has treated crypto as property since 2014 — so, as of mid-2026, selling crypto at a loss and immediately buying it back does not trigger wash sale disallowance the way it would for a stock.
- Multiple attempts to extend the wash sale rule to digital assets have failed or stalled — including proposals in the 2021 Build Back Better Act, the Lummis-Gillibrand bill, and more recent 2024–2025 proposals — and no such change made it into law as of this writing.
- Form 1099-DA does have a wash-sale box, but it only applies to tokenized securities — digital assets that are themselves classified as stock or securities — not to crypto generally, so don't read the form's existence as a sign the general rule has changed.
- Harvesting still requires real discipline: specific lot identification, accurate basis records, and honest accounting for the mechanics of buying back in. The absence of a wash sale restriction doesn't mean the IRS is any less interested in your cost-basis math.
- This is a policy gap, not a permanent feature of the tax code — it has been targeted by lawmakers repeatedly, and the smart move is to use it deliberately, not to build a strategy that assumes it lasts indefinitely.
The rule: why crypto escapes Section 1091
IRC Section 1091 disallows a loss deduction when you sell "stock or securities" at a loss and buy substantially identical stock or securities within 30 days before or after the sale — a 61-day window in total. It's a rule written for equities and similar instruments, and its text is specific: it says "stock or securities," not "property" broadly. Cryptocurrency has been classified by the IRS as property, not a security, since Notice 2014-21, the foundational guidance that treats digital assets like other capital assets (comparable to stocks or real estate for gain/loss purposes, but explicitly not "currency" or, in the IRS's own framework, a security subject to Section 1091). Because Section 1091's language is narrow and hasn't been amended to reach digital assets, the wash sale rule simply doesn't have a hook to attach to when you sell and rebuy the same token. This isn't an oversight anyone is hiding — it's a well-known gap that tax writers, Treasury, and Congress have all acknowledged. It just hasn't been closed yet.Why it matters: a worked example
Say you bought 4.6 ETH in March 2025 at $3,920 per ETH, a total cost basis of $18,032. By December 2026, ETH has dropped to $2,610, and your position is worth $11,966 — an unrealized loss of $6,066. (Illustrative only — figures constructed for this example; not investment advice or a market prediction.) If ETH were a stock, and you sold at that loss and bought back an equivalent position within 30 days, Section 1091 would disallow the loss and roll it into the basis of your new shares — you'd get the deduction eventually, but not now, and not on your timeline. Because ETH is property, not a security, you can sell those 4.6 ETH on December 28, realize the full $6,066 loss against your 2026 capital gains (and up to $3,000 against ordinary income if you have excess losses), and buy back the same 4.6 ETH on December 29 at essentially the same price — resetting your basis to the new, lower price while keeping the loss deduction and keeping your market position intact. That's the entire mechanical advantage: harvest the loss, keep the exposure, without waiting out a 30-day window and risking a price move in the meantime.How it works in practice
- Identify specific lots, not just an average. If you bought the same token at different times and prices, you need to specifically identify which lot you're selling to claim the loss on that particular lot — the IRS's digital asset basis regulations (Treas. Reg. 1.1012-1(j)) and the related Rev. Proc. 2024-28 wallet-by-wallet safe harbor govern how this works starting in the 2025 tax year forward.
- Sell the losing lot, document the trade, and buy back on your own schedule. Unlike with stocks, you don't need to wait 30 days — you can repurchase immediately if you still want the exposure. Some investors still build in a short buffer purely to manage price-slippage risk, not because of any tax rule.
- Losses offset gains first, then up to $3,000 of ordinary income per year, with any excess carried forward — the same general capital loss rules that apply to any property sale.
- Keep records that would survive a specific-identification challenge: trade confirmations, wallet addresses, timestamps, and a clear description of which lot you designated as sold. If you can't prove you specifically identified a lot, the IRS defaults to FIFO, which may not produce the loss you wanted. The same lot-level discipline matters when it's time to report crypto gains on your tax return, since a sloppy harvest is just as likely to trip up your gains reporting as your losses.
The catch
This is a well-known gap that Congress keeps trying to close. The 2021 Build Back Better Act included a provision extending wash sale treatment to digital assets and other commodities; it didn't become law. The Lummis-Gillibrand Responsible Financial Innovation Act proposed something similar and stalled. Additional proposals surfaced in 2024 and 2025. None of these have passed as of mid-2026, but the pattern is clear: this is a recurring legislative target, not a settled policy. The IRS is already building the infrastructure to track wash sales in digital assets. Form 1099-DA includes Box 1i specifically for wash-sale-disallowed losses — currently scoped only to tokenized securities, not crypto generally, but it shows the reporting plumbing exists. If Congress ever extends Section 1091 to digital assets broadly, the mechanism to enforce and report it is largely already built. "Substantially identical" is not fully defined for crypto even within the current framework. For stocks, courts have developed decades of case law on what counts as "substantially identical." No comparable body of guidance exists for crypto — so if the rule is ever extended, expect real ambiguity about whether, say, ETH and a liquid-staked ETH derivative count as the same asset. A retroactive change is unlikely but not something you should bet the farm on. Most tax law changes apply prospectively, but harvesting strategies built around an assumption that the rule "will never apply" are relying on the current absence of a rule, not a permanent guarantee. This strategy only helps if you have real losses and a real ongoing tax liability to offset. It's not a way to manufacture losses out of nothing, and aggressive, high-frequency "harvesting" that doesn't reflect genuine economic risk can invite separate scrutiny (for example, under general anti-abuse doctrines) even without a wash sale rule specifically in play.Strategy: what to actually do
- Review your positions for unrealized losses well before the December 31 tax-year deadline, not in a last-minute scramble — leaving it to the final days gives you less time to document lot-level details correctly.
- Use specific identification and keep clean records for every lot you sell, so your claimed loss holds up if questioned.
- Don't let the absence of a wash sale rule turn into sloppy trading. Rebuying instantly is legal today, but document why you're re-entering the position (a genuine, independent reason for repurchasing) rather than treating it as a mechanical, meaningless round-trip.
- Model out your total capital gains and losses for the year before harvesting, since losses offset gains dollar-for-dollar before the $3,000 ordinary-income offset kicks in — harvesting more than you can use in a given year just becomes a carryforward.
- Revisit this strategy annually. Given how often Congress has proposed closing this gap, a strategy built into your process should get re-checked against current law each tax season, not run on autopilot for years. Our ultimate guide to tax-loss harvesting covers the broader strategy playbook beyond just the crypto-specific wash sale gap, and this look at 2025 tax-loss harvesting trends in crypto is a useful gut-check on how other investors are approaching it.
Where Harness fits in
Tax-loss harvesting sounds simple until you're managing dozens of lots across multiple wallets and exchanges — including DeFi positions, where the tax treatment of things like liquidity pools and lending is still murky — trying to prove specific identification, and watching for the next legislative attempt to close the loophole. Harness connects you with tax advisors experienced in crypto portfolios, so your harvesting strategy is built on current law and solid recordkeeping — not on a rule of thumb that might not survive the next tax bill.
Putting it all together
Before you rely on crypto's wash-sale gap this year, confirm:- You're using specific lot identification with real documentation, not just an assumption about which tokens you sold.
- You've checked that no new law has changed Section 1091's scope since this was written — this is one of the more actively contested corners of crypto tax policy.
- Your harvesting reflects genuine portfolio decisions, not a mechanical loop that could raise other questions even without a wash-sale rule in play.
Frequently Asked Questions
Can I sell crypto at a loss and immediately buy it back? As of mid-2026, yes — the wash sale rule under IRC Section 1091 applies only to stock and securities, and the IRS treats crypto as property, so there's currently no mandated waiting period. Confirm this hasn't changed before relying on it, since it's been a repeated target for legislative reform. Is this the same as tax-loss harvesting with stocks? The goal is the same — realize a loss to offset gains — but the mechanics differ because crypto isn't subject to the 30-day wash sale window that applies to stocks. That's the entire source of the strategy's appeal. Will the wash sale rule eventually apply to crypto? It's possible. Congress has proposed extending Section 1091 to digital assets multiple times (2021, and again in 2024–2025 proposals), and none have passed as of this writing. Given the pattern, treat this as a gap that could close rather than a permanent feature. Does Form 1099-DA report wash sales for my crypto trades? Only for digital assets that are also classified as securities, such as certain tokenized securities — not for typical crypto-to-crypto or crypto-to-cash trades. Regular crypto wash sales are not currently flagged on the form. How much loss can I actually deduct in a given year? Capital losses first offset capital gains dollar-for-dollar; up to $3,000 of any remaining loss can offset ordinary income per year, with the rest carried forward to future years. Do I need to wait any amount of time before buying back the same crypto? No mandated waiting period currently exists under tax law, though some investors build in a short buffer for market-timing reasons rather than tax reasons. What records do I need to support a tax-loss harvest? Trade confirmations showing the date, quantity, and price of both the sale and the repurchase, plus documentation showing which specific lot you sold if you hold multiple lots of the same asset acquired at different times and prices.
Disclaimer:
This article should not be considered tax or legal advice and is provided for informational purposes only. Please consult a tax professional for your specific tax situation.
Tax related products and services provided through Harness Tax LLC. Harness Tax LLC is affiliated with Harness Wealth Advisers LLC, collectively referred to as "Harness Wealth". Harness Wealth Advisers LLC is a paid promoter, internet registered investment adviser. Registration does not imply a certain level of skill or training. This article should not be considered tax or legal advice and is provided for informational purposes only. Please consult a tax and/or legal professional for advice specific to your individual circumstances. This article is a product of Harness Tax LLC.
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