Coinbase users are entering a new reporting cycle with the exchange beginning to issue Form 1099-DA for reportable crypto sales and exchanges in the 2025 tax year. According to reports from AMBCrypto, the exchange sends the form to the IRS and makes a copy available to customers. However, this form only reports gross proceeds from crypto dispositions without providing cost basis information, leaving users responsible for determining what they paid for sold assets and accounting for transfers across platforms. The distinction matters more now because broker reporting is expanding, with US brokers beginning to report gross proceeds from digital asset dispositions on Form 1099-DA for the 2025 tax year, while basis reporting for covered assets starts with 2026 transactions.
For tax year 2025, Form 1099-DA includes proceeds from sales and exchanges of crypto assets, with crypto-to-dollar sales and crypto-to-crypto exchanges both being reportable dispositions. As reported by AMBCrypto, gross proceeds represent cumulative amounts received across dispositions and are not net profit, taxable income, or account balance. Coinbase may also issue other tax forms depending on customer activity, with certain reward or income items reported separately from digital asset dispositions. The exchange's Retail Tax Center no longer provides Form 8949 from tax year 2025 onward, requiring users to prepare their own disposition reporting. Beginning with 2026 transactions, brokers report basis for certain covered assets, which generally means assets acquired after 2025 in a custodial account with the broker and held there until disposition, though crypto transferred in from elsewhere is generally noncovered.
Moving crypto between accounts owned by the same person generally is not a taxable sale, with tax basis and holding period traveling with the asset. According to AMBCrypto, suppose someone bought BTC on another exchange several years ago, moved it to a hardware wallet, and later deposited it at Coinbase to sell. Coinbase sees the deposit and sale but may not have reliable information about the purchase price or acquisition date for transferred-in assets. The final digital asset basis regulations moved taxpayers toward wallet-by-wallet identification beginning in 2025, with Revenue Procedure 2024-28 providing a safe harbor for allocating previously unattached basis to wallets or accounts as of January 1, 2025. However, transfers between wallets owned by the same taxpayer can still break the data trail if the receiving platform does not receive the acquisition history, even a network fee paid in crypto can create a small disposition that needs consideration.
The expanding IRS crypto reporting rules are pushing investors to maintain accurate transaction records across exchanges, wallets, staking, and DeFi platforms. As reported by AMBCrypto, one wallet can create several tax questions - a centralized exchange records activity inside its own system but cannot automatically know what happened before an asset arrived from a hardware wallet, another exchange, or a decentralized application. Consider an investor who buys ETH on one exchange, transfers it to a wallet, stakes part of it, uses the rest in a liquidity pool, and later sends several tokens to a different exchange to sell. The final exchange sees the deposit and sale but may not know the original purchase date, acquisition cost, staking history, or what happened inside the liquidity pool. DeFi records describe mechanics, not tax treatment - on-chain records show contract calls and token movements but do not explain the investor's intent or label each event for a federal return. A single DeFi interaction can produce deposits, receipt tokens, reward tokens, fees, and later withdrawals, with the tax analysis depending on the transaction's substance and available guidance.
The Coinbase Tax Center provides forms, transaction history, and account reports but cannot independently verify acquisitions made elsewhere or classify transactions inside or outside wallets. As reported by AMBCrypto, Coinbase encourages users to review and edit cost-basis details, especially for imported assets, which still require evidence such as trade confirmations and consistent lot-identification methods. Users should distinguish between the Coinbase exchange and Coinbase Wallet, as transfers between the two may be nontaxable but still need correct linking. The IRS will receive more information directly from brokers, but those reports may still show only part of an investor's financial history. The distinction between gross proceeds and taxable income becomes critical - a trader who repeatedly buys and sells with the same capital can have proceeds far above the amount ever deposited, while the taxable result is based on proceeds minus supported basis.
Users should start with tax documents from Coinbase, download complete transaction history for the year, and collect records from all other exchanges and platforms. According to AMBCrypto, common mistakes include treating proceeds as gains instead of economic gains, accepting zero basis for transferred-in assets, and reporting Coinbase in isolation without considering the entire ownership history. The expanding reporting regime does not mean every broker form will be complete - it means inconsistencies will be easier to spot. For investors with activity beyond a single exchange, careful reconciliation is becoming a normal part of tax. Warning signs include unexplained zero basis, negative balances, large proceeds that do not resemble economic gains, missing wallet history, and results that change sharply when one data source is added. The IRS requires taxpayers to report taxable digital asset transactions regardless of whether information returns were issued, making comprehensive reconciliation essential before filing.
