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Crypto Tax Loss Harvesting in 2026: No Wash Sale, Immediate Rebuy Allowed

The wash sale rule that prevents stock investors from immediately repurchasing after harvesting a loss does not apply to cryptocurrency. You can sell Bitcoin or Ethereum at a loss, lock in the deduction, and buy back the same asset the same day — legally. Here is how the strategy works, how losses reduce your 2026 tax bill, and where advisor coordination matters on a seven-figure crypto portfolio.

What crypto tax loss harvesting is

Tax loss harvesting is the practice of selling a capital asset at a loss to generate a tax deduction, then optionally reinvesting the proceeds to maintain market exposure. The loss is "harvested" because you do not have to wait for a permanent loss — you book it when it appears in your portfolio, use it to offset taxable gains, and buy back in if you still want the position.

For cryptocurrency holders, this is particularly useful because:

The wash sale gap: IRC §1091 does not apply to cryptocurrency

For stock investors, the wash sale rule under IRC §1091 imposes a 30-day waiting period: sell a security at a loss and repurchase the same or substantially identical security within 30 days before or after, and the loss is disallowed — added back to the basis of the newly acquired shares instead.1 This blocks the simple "sell, harvest, immediately rebuy" approach for equities.

Cryptocurrency is classified as property, not as a security, for federal tax purposes.2 IRC §1091 applies to "stock and securities" — it does not extend to property in general. The practical result:

What the wash sale gap means in practice:
  • You can sell 1 BTC at a $50,000 loss at 10:00 am and repurchase 1 BTC at 10:05 am.
  • The $50,000 loss is fully recognized. No 30-day waiting period applies.
  • Your new BTC position has a cost basis equal to the repurchase price — a reset that starts a new holding period and new gain/loss calculation.
  • This applies to Bitcoin, Ethereum, and any other cryptocurrency. Same-coin immediate rebuys are not wash sales under current law.

Stock investors who want to maintain exposure during the wash sale window must swap into a "substantially similar" substitute (e.g., one S&P 500 ETF for a different one). Crypto investors face no such constraint — the asset class itself is exempt from the rule.

Legislative risk

Congress has repeatedly proposed extending wash sale rules to digital assets. Form 1099-DA, which took effect for 2025 transactions, already includes Box 1i — "Wash Sales Loss Disallowed" — suggesting the IRS has pre-built the reporting infrastructure in anticipation of a potential rule change.3 No such extension has been enacted as of June 2026. The strategy is fully legal today. Investors with multi-year harvesting plans should monitor Congressional tax activity, as a change would apply prospectively but could arrive with limited notice.

How harvested losses reduce your 2026 tax bill

Capital losses offset capital gains first, then up to $3,000 of ordinary income per year, with any excess carrying forward indefinitely.4 The netting follows a specific hierarchy:

  1. Short-term losses net against short-term gains first. Both are subject to ordinary income rates (up to 37% for 2026).
  2. Long-term losses net against long-term gains first. Both taxed at preferential LTCG rates (0%/15%/20% + 3.8% NIIT).
  3. Excess from one side crosses to the other. A net short-term loss can reduce long-term gains; a net long-term loss can reduce short-term gains.
  4. Any remaining net loss offsets up to $3,000 of ordinary income. The balance carries forward to the following year indefinitely, retaining its short-term or long-term character.

2026 rate ladder

Gain typeRate (single)Rate (MFJ)Taxable income range
Short-term (STCG)10%–37%10%–37%Ordinary income rates
LTCG — 0% band0%0%Up to $49,450 / $98,900
LTCG — 15% band15%15%$49,451–$545,500 / $98,901–$613,700
LTCG — 20% band20%20%Above $545,500 / $613,700
NIIT surcharge+3.8%+3.8%MAGI above $200,000 / $250,000

A short-term loss that offsets a short-term gain saves the filer's marginal ordinary income rate — up to 37% plus 3.8% NIIT, or 40.8% at the top. The same dollar offsetting a long-term gain saves only 23.8% (20% + NIIT). This means short-term losses are structurally more valuable when you have both types of gains to offset.5

Example: $80,000 in harvested crypto losses against mixed gains (single filer, top bracket)
  • $30,000 short-term loss vs. $30,000 short-term gain → $12,240 saved (40.8% combined rate)
  • $50,000 long-term loss vs. $50,000 long-term gain → $11,900 saved (23.8% combined rate)
  • Total federal tax saved: $24,140 on the same $80,000 of losses
  • If the same $80,000 were all long-term losses offsetting long-term gains: $19,040 saved — $5,100 less

Finding harvest candidates: lot-level analysis

Tax loss harvesting works at the tax lot level, not the account level. A "tax lot" is a specific acquisition: 0.5 BTC purchased on March 15, 2025 at $58,000/BTC, for example. A portfolio that is "up" at the total position level can still contain individual lots with unrealized losses — particularly if you accumulated a position across multiple purchases at different prices.

To identify harvest candidates:

Combining specific identification with tax loss harvesting

When you sell a portion of a position — say, 2 BTC out of a 10 BTC holding spread across five lots at different cost bases — you can use specific identification to designate which lot was sold. This lets you choose the lot most favorable to your tax situation.

In a loss-harvesting context, you identify the lot with the highest cost basis relative to current price — the one with the largest unrealized loss — and sell that lot while holding the others. This is the opposite of the HIFO (highest-in, first-out) approach used when selling appreciated lots to defer gain.

To validly use specific identification:

Setting up lot-tracking discipline before a volatile period — not in the middle of one — is one of the operational foundations a crypto-aware financial advisor helps establish early in the relationship.

A year-end example: 30 BTC portfolio with mixed lots

A single filer holds 30 BTC, acquired over three years. Current price: $90,000/BTC. Total position: $2.7M. The lots break down as:

Earlier in the year, the investor also sold 5 ETH and recognized $120,000 in short-term gains.

Harvest execution:
  • Sell the 8 BTC lot at $90,000: proceeds $720,000 vs. basis $784,000 → $64,000 short-term loss recognized
  • Immediately rebuy 8 BTC at $90,000 → position maintained; new basis $720,000 (short-term clock resets)
  • $64,000 ST loss offsets $64,000 of $120,000 ETH ST gain → net taxable ST gain falls to $56,000
  • Federal tax saved at 40.8% (37% + 3.8% NIIT): ~$26,120
  • Future consideration: when the rebought 8 BTC lot is eventually sold, the $64,000 of deferred gain reappears — but if it is then long-term, the rate drops from 40.8% to 23.8%, generating a rate-arbitrage benefit on top of the deferral

Timing and execution considerations

Year-end deadline

Trades must settle by December 31 to count as 2026 transactions. Crypto settles near-instantly, but exchanges can experience congestion or withdrawal delays in late December. Do not leave harvesting until the last two or three days of the year.

Gain inventory before harvesting

Harvesting is most valuable when you have gains to offset in the same year. Before executing, take stock of: realized gains from earlier in the year (other crypto sales, stock sales, business asset sales); projected year-end staking, mining, or DeFi income; and whether offsetting gains could push you below the NIIT threshold ($200,000/$250,000 MAGI), generating an additional 3.8% benefit if you cross back under.

Multi-chain and multi-wallet complexity

If your losses are spread across an Ethereum hot wallet, a hardware wallet, and two exchange accounts, identifying the right lots requires pulling data from all four sources before you can make good decisions. This is the operational lift that makes systematic TLH difficult without organized records and dedicated software.

When harvesting does not make sense

What a financial advisor coordinates for systematic TLH

Ad-hoc harvesting — spotting a loss and selling it — is something any engaged crypto holder can execute. Systematic TLH on a multi-million-dollar portfolio with mixed gain types, multiple chains, staking income, and stock holdings on the side is where advisor coordination produces a return on its cost:

  1. Lot-level inventory and software setup. Every acquisition across every wallet and exchange must be tracked with accurate basis and acquisition date before harvesting can be modeled. An advisor helps establish and maintain this infrastructure year-round, not just in November when it is too late to fix record gaps.
  2. Cross-asset optimization. A $400,000 crypto gain in the same year as a $200,000 real estate gain and $80,000 in DeFi yield creates a complex gain-type mix. The advisor models which harvest combination — ST losses vs. ST gains, LT losses vs. LT gains, cross-netting — produces the best after-tax result across the whole picture, not just within the crypto account.
  3. Rate-arbitrage planning. Converting a short-term ordinary-rate gain offset today into a deferred long-term gain at a lower rate later is a multi-year income planning strategy, not a one-time year-end decision. An advisor builds this into the overall tax calendar.
  4. Legislative monitoring. If Congress extends the wash sale rule to crypto, the advisor identifies remaining harvesting opportunities in the transition period before the rule takes effect and adjusts the multi-year strategy accordingly.
  5. CPA coordination on carryforward records. Harvesting decisions affect Form 8949 entries, Schedule D calculations, and carryforward balances. Errors compound over years; the advisor works alongside your CPA to ensure losses are claimed correctly and documented for future years.

Get matched with an advisor who understands crypto tax planning

If you hold a crypto portfolio with multiple acquisition lots, have mixed short-term and long-term gain exposure, or want to run a systematic year-end harvest against your 2026 income, the first step is a lot-level inventory with a specialist who works on this every day. Tell us your situation and we will match you with a fee-only advisor who works with crypto-native planning problems.

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  1. IRC §1091; IRS, Tax Topic 409 — Capital Gains and Losses — the wash sale rule disallows a capital loss when the taxpayer sells or exchanges stock or securities at a loss and acquires substantially identical stock or securities within 30 days before or after the sale. The rule is explicitly limited to "stock or securities" as defined under securities law; it does not extend to property in general.
  2. IRS, Digital Assets; IRS Notice 2014-21 — the IRS treats cryptocurrency and other digital assets as property for federal income tax purposes. General tax principles applicable to property transactions apply to digital asset transactions. This classification excludes crypto from the scope of IRC §1091, which applies only to stock and securities.
  3. IRS, Instructions for Form 1099-DA (2026) — Form 1099-DA (effective for proceeds from January 1, 2025 transactions; adjusted basis from January 1, 2026 transactions) includes Box 1i "Wash Sales Loss Disallowed." As of June 2026, no legislation extending IRC §1091 to digital assets has been enacted; the wash sale rule does not apply to cryptocurrency under current law. The pre-built reporting field signals potential future rulemaking.
  4. IRS, Tax Topic 409 — Capital Gains and Losses — capital losses offset capital gains dollar-for-dollar without annual limit. Net capital losses in excess of capital gains may offset up to $3,000 of ordinary income per year ($1,500 if married filing separately). Remaining net capital loss carries forward to subsequent years indefinitely, retaining its short-term or long-term character.
  5. Tax Foundation, 2026 Tax Brackets and Federal Income Tax Rates; IRS Revenue Procedure 2025-32; IRS, Net Investment Income Tax — 2026 LTCG rates: 0% up to $49,450 (single) / $98,900 (MFJ); 15% up to $545,500 (single) / $613,700 (MFJ); 20% above those thresholds per IRS Rev. Proc. 2025-32. NIIT of 3.8% applies to net investment income for single filers with MAGI above $200,000 / joint filers above $250,000 per IRC §1411. Combined top federal LTCG rate: 23.8% (non-collectible assets). Short-term capital gains are taxed at ordinary income rates per IRC §1(h).

Tax values verified as of June 2026. IRC §1091 wash sale rule confirmed as inapplicable to cryptocurrency under current law; 1099-DA Box 1i infrastructure noted per IRS Instructions for Form 1099-DA (2026). LTCG brackets per IRS Rev. Proc. 2025-32 cross-checked against Tax Foundation, Kiplinger, and chainwisecpa.com. Capital loss offset rules per IRS Topic 409.