Crypto Tax-Loss Harvesting: Wash Sale Rules and Which Losses You Can Actually Use

This is educational analysis, not tax, legal or financial advice. Tax treatment varies by jurisdiction and changes frequently. Confirm your position with a qualified professional before acting.

Cryptocurrency tax reporting: capital loss harvesting and wash sale rules

In the United States, digital assets are taxed as property, so realising a loss on a spot crypto position is a completed capital loss even if you buy the same asset back minutes later. The wash sale rule in IRC section 1091 reaches stock and securities, not property, so it does not disallow that loss as of September 3, 2026. The loss still has to be reported, and from the 2026 tax year your broker reports the cost basis behind it.

Harvesting is not a way to avoid tax. It moves a loss you already have into a tax year where it can be used, and it lowers your cost basis in the repurchased position, which raises the eventual gain. The benefit is timing and rate arbitrage, not cancellation.

Does the wash sale rule apply to cryptocurrency?

The wash sale rule does not apply to spot cryptocurrency as of September 3, 2026, because IRC section 1091 reaches stock and securities and the IRS classifies digital assets as property. It does apply to securities that give you crypto exposure — including spot crypto ETF shares and tokenized securities — because those are securities regardless of what they track.

For securities, the rule disallows a loss when substantially identical stock or securities are acquired within 30 days before or 30 days after the sale, which together with the day of sale is a 61-day window. The disallowed loss is not destroyed; it is added to the basis of the replacement position and recovered on a later disposal.

This is the distinction that costs people money. The blanket claim that "the wash sale rule does not apply to crypto" is common and incomplete. Two investors with the same economic exposure to bitcoin — one holding spot, one holding an ETF — get opposite answers on the same trade. Check the wrapper, not the underlying.

No IRS rule bars an immediate repurchase of spot crypto. The IRS can still invoke the economic substance and substance-over-form doctrines against transactions that lack a business purpose, and repetitive same-day round trips executed purely to manufacture losses are the pattern most likely to attract that argument. There is no statutory bright line here, which is a reason to harvest deliberately rather than mechanically.

Which lots can you actually harvest after per-wallet basis?

Since January 1, 2025, cost basis must be tracked wallet by wallet and account by account, and each wallet is a separate ledger. You can only match a disposal against lots held in the same wallet, so a high-basis lot sitting on one exchange cannot be used to create a loss on a different exchange. This constraint, not the wash sale rule, is what usually limits how much loss is available.

1. Inventory each wallet and account separately, including cold storage and protocol positions. A wallet you forgot is a set of lots you cannot reach.
2. Find the unrealised loss inside each wallet, not across the portfolio. The portfolio-level number tells you nothing about what is harvestable.
3. Identify the specific lot before the disposal, not after. Specific identification depends on records that support the choice at the time it was made.
4. Check the wrapper before you trade. If the position is an ETF or a tokenized security, the 61-day wash sale window applies.

The Revenue Procedure 2024-28 safe harbor was a one-time window to reallocate unused basis across wallets as of January 1, 2025. Its deadline was the earlier of your first disposal after that date or the due date of your 2025 return. If you missed it, your existing allocations are fixed, and that is the allocation harvesting now has to work within.

See the crypto tax guide for the full per-wallet compliance requirements and the Form 1099-DA reporting regime behind them.

How much can crypto losses actually offset?

Capital losses offset capital gains without limit, and only $3,000 of any remaining net loss can be deducted against ordinary income in a year — $1,500 if married filing separately. The excess carries forward indefinitely under IRC section 1212(b), with no carryback and with short-term and long-term character preserved.

Illustration, stated assumptions. Assume a filer realises $30,000 of net capital losses in a year and has no capital gains. $3,000 is deductible against ordinary income that year, and the remaining $27,000 carries forward. At the same rate and with no gains in later years, absorbing the full loss takes ten years. Harvesting a very large loss into a year with no gains to absorb it converts an immediate benefit into a decade-long one.

This is why harvesting is paired with realising gains rather than done in isolation. A loss is worth most in a year where it has capital gains to cancel, and the $3,000 ordinary-income cap is the floor it falls back to.

Are profits on cryptocurrencies taxable?

Yes. Profits on cryptocurrency are taxable in the United States whenever a disposal occurs, including selling for fiat, swapping one token for another, and spending crypto on goods or services. Holding an appreciated position is not taxable, and moving assets between wallets you control is not a disposal.

• Selling for fiat, swapping tokens and spending crypto are all disposals that realise a gain or loss, regardless of whether dollars ever reach a bank account.
• Staking rewards, mining rewards, airdrops and crypto received as payment are ordinary income at fair market value when you gain dominion and control, and that value becomes your basis.
• Buying with fiat, holding, and transferring between your own wallets are not taxable events.
• Gains on assets held more than one year qualify for long-term rates; anything shorter is taxed at ordinary income rates.

The full 2026 rate tables, the taxable-event list and the Form 1099-DA reporting rules are covered in the crypto tax guide. This page assumes those and focuses on the loss side.

What crypto wash sale legislation is proposed but not law?

Two bills before Congress as of September 3, 2026 would extend the wash sale rule to digital assets, and neither has passed. They disagree on stablecoins, which is the difference most likely to matter to a reader planning around a stablecoin position.

A proposal is not a rule. As of September 3, 2026 neither bill has been enacted, and the wash sale rule does not reach spot digital assets. Reporting that describes a crypto wash sale rule as current law is wrong, and so is planning on the assumption that the exemption is permanent.

The honest planning position is that the exemption is a policy choice with bipartisan proposals to remove it, that any change would take effect from a stated date rather than retroactively, and that a harvesting plan built on the exemption surviving indefinitely is a plan with a legislative dependency. Harvest deliberately in a drawdown year rather than deferring on the assumption that next year offers the same freedom.

What are the risks and mistakes in crypto tax-loss harvesting?

The five expensive mistakes are treating the wash sale exemption as universal, harvesting across wallets that cannot be paired, ignoring the $3,000 ordinary-income cap, forgetting that repurchase lowers your basis, and executing enough mechanical round trips to invite an economic substance argument. Each is avoidable and none is exotic.

The risk that dominates all of these is position risk, not tax risk. Selling and rebuying leaves you exposed to the asset the whole time, and selling without rebuying changes your allocation. A harvesting decision that quietly changes your portfolio is an allocation decision wearing a tax costume.

For sizing the position the losses sit in, see the crypto portfolio strategy guide, and for the rules that decide what to trim, see crypto rebalancing strategies. A rebalance and a harvest are often the same trade and should be planned together rather than separately.

Frequently asked questions

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For the market context behind the losses this page discusses harvesting, see the June 2026 selloff analysis.

Trusted Resources

• IRS, Instructions for Form 1099-DA (2026) — accessed September 3, 2026
• IRS, Understanding your Form 1099-DA — accessed September 3, 2026
• IRS Rev. Proc. 2024-28, per-wallet basis allocation safe harbor — accessed September 3, 2026
• IRS Rev. Proc. 2025-32, tax year 2026 inflation adjustments — accessed September 3, 2026
• IRS Virtual Currencies — accessed September 3, 2026