On October 9, 2019, the Internal Revenue Service (IRS) issued Revenue Ruling 2019-24, providing long-awaited guidance on the federal income tax treatment of cryptocurrency hard forks and airdrops[reference:0][reference:1]. This ruling addressed two fundamental questions: whether a hard fork alone creates taxable income, and whether receiving new cryptocurrency through an airdrop following a hard fork is a taxable event[reference:2][reference:3]. This guide explains the ruling's key provisions, the "dominion and control" standard, reporting obligations, recordkeeping requirements, and the compliance risks that every cryptocurrency holder should understand.
📌 Important: This article is for educational purposes only and does not constitute personalized legal, financial, or tax advice. Tax laws are complex and subject to change. Always consult a qualified tax professional for guidance on your specific situation.
Prior to 2019, the IRS had provided limited guidance on cryptocurrency taxation. Notice 2014-21 established that virtual currency is treated as property for U.S. federal tax purposes, but it did not address the specific challenges posed by hard forks and airdrops[reference:4][reference:5]. As blockchain networks evolved and hard forks became more common — such as the Bitcoin Cash fork from Bitcoin — taxpayers and practitioners sought clarity on whether these events triggered taxable income[reference:6].
Revenue Ruling 2019-24 filled this gap by applying long-standing tax principles — specifically, the concept of "accession to wealth" under Internal Revenue Code § 61 — to the unique context of cryptocurrency hard forks and airdrops[reference:7][reference:8]. The ruling also introduced the concept of "dominion and control" as the key determinant of when income is recognized[reference:9][reference:10].
Revenue Ruling 2019-24 addresses two distinct scenarios involving hard forks and airdrops[reference:11][reference:12]. The IRS defined a hard fork as occurring "when a cryptocurrency on a distributed ledger undergoes a protocol change resulting in a permanent diversion from the legacy or existing distributed ledger"[reference:13][reference:14]. An airdrop was defined as "a means of distributing units of a cryptocurrency to the distributed ledger addresses of multiple taxpayers"[reference:15][reference:16].
The ruling's central holding is straightforward:
💡 Key takeaway: The hard fork itself is not taxable. The taxable event is the receipt of new cryptocurrency through an airdrop, and the timing of that receipt is determined by when the taxpayer gains dominion and control over the new assets.
Situation 1 in Revenue Ruling 2019-24 involves a taxpayer who owns a cryptocurrency that undergoes a hard fork, but the new cryptocurrency created by the fork is not airdropped or otherwise transferred to an account owned or controlled by the taxpayer[reference:21][reference:22].
In this scenario, the IRS ruled that the taxpayer does not have gross income under § 61[reference:23][reference:24]. Because the taxpayer received no units of the new cryptocurrency, there was no "accession to wealth"[reference:25][reference:26]. The hard fork itself — a protocol change on the blockchain — does not by itself create taxable income.
📌 Remember: The mere occurrence of a hard fork is not a taxable event. If you do not receive any new cryptocurrency, you have no income to report from the fork itself.
Situation 2 involves a taxpayer whose cryptocurrency undergoes a hard fork, and units of the new cryptocurrency are airdropped into the taxpayer's distributed ledger address[reference:27][reference:28]. The taxpayer is able to dispose of the new units immediately after the airdrop.
In this scenario, the IRS ruled that the taxpayer has ordinary gross income under § 61[reference:29][reference:30]. The amount of income is the fair market value of the new cryptocurrency at the time the airdrop is recorded on the distributed ledger[reference:31][reference:32]. The income is ordinary in character — not capital gain — regardless of how long the taxpayer held the original cryptocurrency[reference:33][reference:34].
⚠️ Important: The income is recognized even if the taxpayer did not actively seek or plan for the airdrop. The IRS applies the principle that "undeniable accessions to wealth" are included in gross income[reference:35]. The taxpayer's intent or lack thereof is not a factor.
The concept of "dominion and control" is central to Revenue Ruling 2019-24[reference:36][reference:37]. The IRS explained that a taxpayer does not have receipt of cryptocurrency when the airdrop is recorded on the distributed ledger if the taxpayer is not able to exercise dominion and control over the cryptocurrency[reference:38][reference:39].
A taxpayer has dominion and control when they are able to transfer, sell, exchange, or otherwise dispose of the cryptocurrency[reference:40][reference:41]. For example, if the new cryptocurrency is recorded on the ledger and the taxpayer can immediately sell it, dominion and control exists at that moment[reference:42].
The IRS provided a practical example: if the new cryptocurrency is held in a wallet managed through an exchange that does not support the newly created cryptocurrency, and it is therefore not credited to the taxpayer's account, the taxpayer is not treated as having dominion and control[reference:43][reference:44]. In such a case, the taxpayer is treated as receiving the cryptocurrency later, once it is credited to the account and the taxpayer is able to dispose of it[reference:45].
🧠 Practical implication: The timing of income recognition can vary depending on when your exchange or wallet supports the new cryptocurrency. This makes recordkeeping — and staying informed about exchange support — critically important.
When a taxpayer receives new cryptocurrency through an airdrop following a hard fork, the tax treatment is as follows:
The amount received is treated as ordinary income in the tax year in which the taxpayer gains dominion and control over the new cryptocurrency[reference:46][reference:47][reference:48]. This income is reported on the taxpayer's Form 1040 and is subject to ordinary income tax rates.
The taxpayer's cost basis in the new cryptocurrency is equal to the fair market value of the cryptocurrency at the time it is included in gross income (i.e., when dominion and control is established)[reference:49][reference:50][reference:51]. This basis is used to calculate gain or loss when the cryptocurrency is later sold or disposed of.
The holding period for the airdropped cryptocurrency begins on the day after it is received[reference:52][reference:53]. This determines whether a subsequent sale is treated as short-term or long-term capital gain.
📊 Note: The fair market value of cryptocurrency can be highly volatile. To determine the value at the time of receipt, taxpayers should use a reputable price source and document the date and time of the airdrop. Prices, fees, and platform availability change constantly; always verify current data from multiple reliable sources.
Accurate recordkeeping is essential for complying with Revenue Ruling 2019-24[reference:54]. Taxpayers should maintain documentation for every hard fork and airdrop event, including:
These records are necessary to calculate the correct amount of income, establish basis, and determine the holding period for future dispositions.
Taxpayers who receive cryptocurrency through an airdrop following a hard fork must report the income on their federal tax return.
Ordinary income from airdrops is reported on Schedule 1 (Additional Income and Adjustments to Income) of Form 1040. Since tax year 2019, the IRS has included a question on Form 1040 asking whether the taxpayer received, sold, sent, exchanged, or otherwise acquired a financial interest in any virtual currency[reference:55].
When the airdropped cryptocurrency is later sold or disposed of, the resulting gain or loss is reported on Form 8949 and Schedule D (Capital Gains and Losses). The basis used is the fair market value at the time of receipt (as established above), and the holding period determines whether the gain is short-term or long-term.
⚠️ Important: The IRS has indicated that it is actively addressing potential non-compliance in the cryptocurrency area through taxpayer education, audits, and criminal investigations[reference:56]. In July 2019, the IRS began mailing educational letters to more than 10,000 taxpayers who may have reported virtual currency transactions incorrectly or not at all[reference:57].
Failing to properly report hard fork and airdrop income can lead to significant consequences.
Taxpayers who fail to report income may be liable for tax, penalties, and interest[reference:58]. Penalties can include accuracy-related penalties, failure-to-file penalties, and failure-to-pay penalties.
In some cases, taxpayers could be subject to criminal prosecution for tax evasion or filing false returns[reference:59].
The IRS has made cryptocurrency enforcement a priority. Taxpayers who do not report airdrop income may be selected for audit, and the IRS may use information from exchanges and blockchain analytics to identify unreported transactions.
🧠 Reality check: The IRS has access to a growing amount of data on cryptocurrency transactions. Reporting all taxable events accurately — including hard fork airdrops — is the best way to avoid enforcement action.
The table below summarizes the tax treatment of hard forks and airdrops under Revenue Ruling 2019-24.
| Scenario | Taxable Event? | Character of Income | Amount of Income | Basis |
|---|---|---|---|---|
| Hard fork only (no airdrop) | No | — | — | — |
| Hard fork with airdrop (dominion and control exists) | Yes | Ordinary income | FMV at time of receipt | FMV at time of receipt |
| Hard fork with airdrop (no dominion and control yet) | No (deferred) | — | — | — |
| Later sale of airdropped crypto | Yes | Capital gain or loss | Sale proceeds minus basis | Carryover basis (FMV at receipt) |
Note: FMV = Fair Market Value. This table is a general guide; actual treatment may vary based on specific facts and circumstances.
Use this checklist to stay compliant with Revenue Ruling 2019-24.
Scenario: Sarah holds 2 Bitcoin (BTC) in a self-custodied wallet. On January 15, 2026, the Bitcoin network undergoes a hard fork, creating a new cryptocurrency called "Bitcoin New" (BTN). The BTN is airdropped to all BTC holders at a 1:1 ratio — Sarah receives 2 BTN.
This example is for illustration only. Actual outcomes depend on specific facts, market conditions, and the taxpayer's individual circumstances. Always consult a tax professional.
By engaging with cryptocurrency, you accept these risks and the responsibility to comply with applicable tax laws.
No. Under Revenue Ruling 2019-24, a hard fork alone does not create taxable income. Income is only recognized if the taxpayer receives new cryptocurrency through an airdrop and has dominion and control over it[reference:63][reference:64].
Dominion and control means the taxpayer has the ability to transfer, sell, exchange, or otherwise dispose of the cryptocurrency[reference:65][reference:66]. It matters because it determines when income is recognized. If the taxpayer cannot access or dispose of the new crypto, income is deferred until they can[reference:67][reference:68].
The amount of income is the fair market value of the new cryptocurrency at the time the taxpayer gains dominion and control over it[reference:69][reference:70].
Airdrop income is treated as ordinary income[reference:71][reference:72]. It is not capital gain, regardless of how long the taxpayer held the original cryptocurrency. The character of the income is determined at the time of receipt.
The basis is the fair market value of the cryptocurrency at the time it is included in gross income (i.e., when dominion and control is established)[reference:73][reference:74].
The holding period begins on the day after the cryptocurrency is received[reference:75]. This determines whether a subsequent sale is treated as short-term or long-term capital gain.
If the exchange does not support the new cryptocurrency and it is not credited to your account, you may not have dominion and control[reference:76][reference:77]. Income is recognized later, when the asset is credited to your account and you are able to dispose of it[reference:78].
Failure to report airdrop income can result in penalties, interest, and potential criminal prosecution[reference:79]. The IRS is actively enforcing cryptocurrency tax compliance[reference:80].