Cryptocurrency Tax Planning: 2026 Guide for $1M–$5M Investors

Crypto is now a meaningful part of many millionaires' portfolios — and a surprisingly complex tax situation. The IRS treats crypto as property, not currency, which means every trade, sale, or exchange triggers a capital gains event. At $1M–$5M, where you're already managing LTCG rates of 15–20% plus the 3.8% NIIT, the difference between good and bad crypto tax planning can exceed $50,000 in a single year.

Two important 2026 changes: Form 1099-DA now requires centralized exchanges to report your cost basis to the IRS, and IRS Notice 2026-20 preserves the right to use HIFO lot selection — highest-in, first-out — through December 31, 2026. If you haven't documented your cost basis methodology before year-end, you lose that optionality permanently for new acquisitions.¹

Federal capital gains tax only. Excludes state income tax. 2026 LTCG rates per IRS Rev. Proc. 2025-67; NIIT per IRC §1411. Not investment advice.

How the IRS Classifies Cryptocurrency

IRS Notice 2014-21 established that cryptocurrency is property for federal tax purposes — the same treatment as stocks, bonds, or real estate. This has two major implications:

• Every disposal is a taxable event. Selling, trading one crypto for another, using crypto to buy goods, or receiving crypto as payment all trigger recognition of gain or loss.
• The wash-sale rule does not apply. IRC §1091 restricts loss deductions only for "stock or securities." Crypto's property classification exempts it entirely — a significant advantage over equity investing covered below.

What is not a taxable event: buying crypto with dollars, transferring between your own wallets, and gifting crypto (the recipient takes your cost basis and holding period).²

What Counts as a Taxable Event

2026 Capital Gains Rates for Crypto

Long-term capital gains (held > 1 year) are taxed at preferred rates. Short-term gains are taxed as ordinary income. For $1M–$5M investors, the spread is typically 14–22 percentage points — the difference between holding a position for 12 months and selling at 11.³

The 3.8% Net Investment Income Tax

At the income levels common in this audience, the 3.8% NIIT almost always applies to crypto gains. It hits all net investment income — capital gains, dividends, interest — for filers above $200,000 single or $250,000 MFJ in modified AGI.⁴ Unlike the LTCG brackets, the NIIT thresholds are not indexed for inflation, so they capture more taxpayers each year.

The NIIT applies to both short-term and long-term crypto gains. For most investors in this wealth tier, the real LTCG rate is 18.8% (15% + 3.8%) or 23.8% (20% + 3.8%), not 15% or 20%.

The Wash-Sale Advantage — Unique to Crypto

This is one of the few genuine tax advantages crypto holds over stocks. IRC §1091 — the wash-sale rule — disallows a loss if you buy a "substantially identical" security within 30 days before or after the sale. The rule applies to securities, and because crypto is property (not a security), it does not apply.²

What this means in practice:

• You can sell Bitcoin at a loss, immediately rebuy it, and still claim the full loss for tax purposes.
• You can harvest losses in December and rebuy on January 1 without the 30-day cooling-off period.
• You can harvest losses in a crypto position and hold your same position continuously — something impossible with a stock portfolio without changing exposure.

A proposed extension of wash-sale rules to crypto has circulated in Congress but has not passed as of 2026. This advantage may not last indefinitely — document carefully and plan while it exists.

HIFO and Specific Identification (IRS Notice 2026-20)

If you've bought the same crypto at different prices over time, which "lot" you sell determines your gain. The IRS default is FIFO (first-in, first-out) — your earliest purchase is treated as sold first. For long-time holders who bought Bitcoin years ago at much lower prices, FIFO creates maximum taxable gain.

The alternative is specific identification: you designate exactly which lot you're selling before you transact. Within specific identification, a common strategy is HIFO (highest-in, first-out) — selling your highest-cost lots first to minimize current-year gain.

The 2026 deadline: IRS Notice 2026-20 extends temporary relief allowing taxpayers to make adequate identification on their own books and records through December 31, 2026, even if their broker's systems can't yet accept standing specific-ID instructions.¹ After 2026, basis reporting becomes fully broker-reported, and your window to establish HIFO without broker support closes.

To qualify for specific ID protection in 2026:

1. Before each sale, record in writing (spreadsheet, email, or crypto tax software): which lot(s) you're selling, their acquisition date and cost, and the method you're using.
2. Keep documentation consistent across all transactions in the year.
3. Your records override the 1099-DA if the IRS questions the basis — but you must have the documentation.

Staking, Mining, and DeFi Yields: Ordinary Income

Revenue Ruling 2023-14 established that crypto staking rewards are taxable as ordinary income at fair market value when you gain "dominion and control" — generally when the rewards appear in your wallet and can be freely sold or transferred.⁵

What this means for planning:

• Staking yield becomes your cost basis. If ETH staking rewards are worth $8,000 when received (taxed as ordinary income at up to 37%), your basis in those ETH is $8,000. Future appreciation above $8,000 is then subject to LTCG rates — but only after 12 months.
• High staking yields can create a large ordinary income tax bill. A $1M position earning 5% annual staking yield generates $50,000 in ordinary income — taxed at 32–37% for most readers here, not the preferred LTCG rate.
• DeFi liquidity mining and yield farming follows the same treatment: tokens received as rewards are ordinary income at receipt.

There is active litigation challenging whether staking rewards should be taxable at receipt or only upon sale. Cross-motions were filed in 2026 with a bench trial scheduled for September 2026. Until the outcome, the IRS position is Rev. Rul. 2023-14: income at receipt. Do not plan around a different outcome without legal counsel.

Form 1099-DA: The New Reporting Era

Starting with 2025 transactions (reported to taxpayers in early 2026), centralized U.S. crypto exchanges must issue Form 1099-DA reporting gross proceeds from sales and exchanges. For 2026 transactions, basis reporting for "covered" digital assets — those acquired after January 1, 2026, in a custodial broker account — is also required.⁶

Why this matters for your tax strategy:

• The IRS now has a data trail. The era of unreported crypto gains is over for exchange-held assets. Gains must be reconciled on Form 8949.
• Your 1099-DA may be wrong. If you used FIFO on your own records but your exchange defaults to a different method, the 1099-DA's reported gain may not match yours. You can use your records under IRS Notice 2026-20 relief — but you need documentation to back it up.
• Wallet-to-wallet transfers create gaps. 1099-DA covers custodial exchange accounts. Gains from DeFi protocols, self-custody wallets, and cross-chain bridges are still self-reported — and frequently missed.

Donating Appreciated Crypto to a DAF

If you hold long-term appreciated crypto, donating directly to a donor-advised fund or qualified charity is one of the most tax-efficient moves available. The rules mirror appreciated stock:⁷

• You deduct the full fair market value (not just your cost basis) as a charitable deduction, subject to 30% of AGI for donations to private foundations or 60% for DAFs — with a 5-year carryforward.
• Neither you nor the DAF pays capital gains tax on the appreciation. The DAF sells the asset at full value and grants the proceeds.
• To qualify for FMV deduction, you must have held the crypto > 1 year.

Example: You bought $30,000 worth of Bitcoin now worth $130,000. Donating it to a DAF generates a $130,000 deduction while eliminating the $100,000 gain (which would have cost you $23,800 in federal LTCG + NIIT). Total tax benefit: your deduction savings plus the $23,800 you didn't pay.