Tax Implications of Cryptocurrency for Businesses: Cost Basis Methods, Broker Reporting Under IRC 6045, and Accepting Crypto Payments

The IRS has been clear since Notice 2014-21 that cryptocurrency is property, not currency, and every transaction involving cryptocurrency is a taxable event that must be reported. For businesses, this creates a web of tax obligations that goes beyond simply reporting gains and losses on speculative trading. When a business accepts cryptocurrency as payment, it recognizes ordinary income at the moment of receipt. When a business pays employees in cryptocurrency, it must withhold employment taxes on the fair market value. When a business mines cryptocurrency, the mining revenue is self-employment income (or business income). And starting in 2025, the expanded broker reporting rules under IRC 6045 require cryptocurrency exchanges and platforms to report transaction-level detail to the IRS, including cost basis information, which means the IRS will have the data to match reported income against actual transactions. The cost basis method used (specific identification vs. FIFO) can produce dramatically different tax outcomes, and businesses that haven’t been tracking cost basis consistently face a potentially expensive cleanup.

How is business cryptocurrency activity taxed?

How does the IRS track cryptocurrency transactions?

Starting in 2026, centralized cryptocurrency exchanges are required to report transactions on Form 1099-DA, similar to how brokerages report stock trades on Form 1099-B. The IRS also uses blockchain analytics firms (Chainalysis, CipherTrace) to trace on-chain transactions and match them to known wallet addresses. John Doe summonses issued to major exchanges (Coinbase in 2016, Kraken in 2021, Circle in 2023) have already provided the IRS with account-holder data for millions of users. Every federal income tax return now includes a question on the first page asking whether you received, sold, exchanged, or otherwise disposed of any digital assets during the year. Answering “no” when you had taxable crypto transactions is treated as a false statement on a tax return, which can increase penalty exposure.

What is the tax treatment of staking rewards and mining income?

Staking rewards and mining income are taxable as ordinary income at fair market value on the date received (Revenue Ruling 2023-14). For miners, this is also subject to self-employment tax if mining constitutes a trade or business. The cost of mining equipment is a deductible business expense (Section 179 or depreciation), and electricity costs are deductible against mining income. When you later sell the staked or mined tokens, you recognize capital gain or loss based on the difference between the sale price and your basis (the fair market value at which you originally recognized income). The holding period for capital gains starts on the date the tokens are received into your wallet.

How are cryptocurrency staking rewards and airdrops taxed?

Staking rewards are taxed as ordinary income at fair market value when you receive them, based on IRS Revenue Ruling 2023-14, which treats staking rewards as income upon receipt regardless of whether you sell them. Airdrops are also taxable as ordinary income at the time you gain dominion and control over the tokens, valued at fair market value on the date of receipt. Your cost basis in staking rewards and airdropped tokens equals the fair market value you reported as income, so if you later sell them, you only pay capital gains tax on any appreciation above that basis. Tracking cost basis across multiple wallets, exchanges, and DeFi protocols requires dedicated crypto tax software because the IRS expects specific identification or FIFO lot tracking for every disposition.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.