Crypto tax rules changed significantly for 2026. Tax preparers need updated knowledge to serve clients holding digital assets. This guide covers the essentials: taxable events, required forms, cost basis tracking, and compliance steps.
What Changed in 2026
Form 1099-DA is now active. Brokers must report digital asset dispositions with cost basis to the IRS. This creates a matching system between reported income and filed returns.
The IRS also implemented wallet-level cost basis tracking under Rev. Proc. 2024-28. Each wallet is now treated as an independent ledger.
These changes increase audit risk for clients with incomplete records.
Taxable Events to Identify
The IRS treats cryptocurrency as property. Two tax types apply:
- Capital gains tax: Triggered when disposing of crypto
- Income tax: Triggered when earning crypto
Capital Gains Events
Ask clients about these activities:
- Selling crypto for cash
- Trading one cryptocurrency for another
- Converting crypto (e.g., ETH to USDC)
- Spending crypto on goods or services
- NFT sales
Income Events
These generate ordinary income:
- Mining rewards
- Staking rewards
- Airdrops
- Interest from lending platforms
- Payment for services rendered in crypto
DeFi-Specific Events
DeFi activity creates additional complexity:
- Yield farming rewards
- Liquidity pool deposits and withdrawals
- Lending and borrowing transactions
- Governance token distributions
Many clients don't realize DeFi activity is taxable. Ask directly.
Required IRS Forms
Filing deadline: April 15, 2026. Extensions available until October 15.
| Form | Use Case |
|---|---|
| Form 8949 | Report individual sales and dispositions |
| Schedule D (Form 1040) | Summarize total capital gains and losses |
| Schedule 1 (Form 1040) | Report mining, staking, and other crypto income |
| Schedule C | Required if crypto activity is a business |
| Form 1099-DA | Broker-reported dispositions (new for 2026) |
Additional Considerations
Form 1040 includes a digital assets question. Clients must answer truthfully.
International holdings may trigger FBAR or FATCA disclosures. Ask about foreign exchange accounts and wallets.
Cost Basis Tracking
Cost basis determines gain or loss on each transaction. Proper tracking is mandatory for audit defense.
Permitted Methods
FIFO (First In, First Out)
Oldest assets sold first. Most commonly used. Default method if no election made.
LIFO (Last In, First Out)
Newest assets sold first. Less common. Must be consistently applied.
Specific Identification (SpecID)
Choose which specific units to sell. Offers most tax planning flexibility. Requires detailed per-transaction documentation.
Implementation
Apply FIFO consistently on a per-wallet basis. Treat each wallet as an independent FIFO ledger.
For Specific Identification: Document the specific units sold at the time of each transaction. Standing orders are acceptable.
Do not mix methods inconsistently. The IRS requires consistent application.
Form 1099-DA: What Tax Preparers Need to Know
Form 1099-DA changes the compliance landscape. Brokers now report:
- Gross proceeds from digital asset sales
- Cost basis (beginning 2026)
- Date of transaction
- Type of digital asset
Federal Matching
The IRS will match 1099-DA data against filed returns. Unreported transactions will generate notices.
State Matching
States will use 1099-DA data to:
- Match crypto gains to state returns
- Issue missing-return notices
- Verify residency claims
- Audit high-income crypto taxpayers
- Assess underpayment penalties
Critical Warning
Do not rely solely on 1099-DA forms to prepare returns. The form represents broker-visible activity only.
Clients may have:
- Private wallet transactions not reported on 1099-DA
- DeFi activity outside broker platforms
- Peer-to-peer transactions
- Cross-chain activity
Prepare returns using complete wallet-by-wallet documentation. Use 1099-DA as one data source among several.
Questions to Ask Crypto Clients
Use this list during client intake:
- Did you buy, sell, or trade any cryptocurrency in 2025?
- Did you receive any crypto as payment for work or services?
- Did you mine or stake any cryptocurrency?
- Did you receive any airdrops or token distributions?
- Did you participate in DeFi (lending, borrowing, liquidity pools)?
- Did you mint, buy, or sell any NFTs?
- Do you have crypto on foreign exchanges?
- Do you have private wallets (not on exchanges)?
- Do you have records of your original purchase prices?
- Did you receive any 1099-DA forms?
Document all answers. Missing information creates liability.
Compliance Checklist for Tax Preparers
Complete these steps for each crypto client:
Pre-Filing
- Collect all 1099-DA forms
- Request transaction history from all exchanges
- Obtain private wallet addresses
- Pull blockchain records for private wallets
- Verify cost basis documentation exists
- Identify cost basis method (FIFO, LIFO, or SpecID)
- Confirm consistent method application across all wallets
- Check for DeFi activity
- Ask about international holdings
Documentation
- Maintain records of every transaction
- Store original cost basis documentation
- Record timestamps in UTC and local time
- Keep exchange account statements
- Save blockchain explorer records for private wallets
- Document any timing discrepancies with explanations
Filing
- Complete Form 8949 for all dispositions
- Summarize on Schedule D
- Report income on Schedule 1 or Schedule C as appropriate
- Answer digital assets question on Form 1040
- File FBAR/FATCA if applicable
Record-Keeping Requirements
Clients must maintain records that demonstrate:
- Original purchase price of each asset
- Date of acquisition
- Date of disposition
- Proceeds from each sale
- Fees paid
- Wallet addresses involved
- Exchange or platform used
Software Options
Crypto tax software automates cost basis calculation and form generation. Popular options connect to exchanges and wallets to import transaction data.
However, independent verification remains essential. Reconcile all transactions monthly. Update cost basis records quarterly.
Audit Defensibility
The IRS uses blockchain analytics and wallet-clustering tools. They can trace transactions across addresses.
Complete, accurate records are the only defense. Clients with gaps in documentation face penalty risk.
Penalty Risk
The IRS enforces crypto non-compliance aggressively. Potential consequences:
- Accuracy-related penalties (20% of underpayment)
- Fraud penalties (75% of underpayment)
- Criminal prosecution for tax fraud
- Up to five years imprisonment
- Fines up to $250,000
Form 1099-DA data combined with blockchain analytics creates a comprehensive view of taxpayer activity. Unreported transactions are now high-risk.
Summary Table: Key Deadlines and Forms
| Item | Deadline/Requirement |
|---|---|
| Filing deadline | April 15, 2026 |
| Extension deadline | October 15, 2026 |
| Capital gains reporting | Form 8949 + Schedule D |
| Income reporting | Schedule 1 or Schedule C |
| Broker reporting | Form 1099-DA |
| Cost basis method | FIFO, LIFO, or SpecID (consistent) |
| Wallet tracking | Per-wallet basis required |
For additional resources on tax preparation tools, visit TIG Tax Pros.