Digital assets remain a top IRS enforcement priority because every blockchain transaction leaves a permanent, traceable record. IRS Criminal Investigation identified $10.59 billion in financial crimes in FY2025, and cryptocurrency tax enforcement touched a growing share of that work. This article covers how the IRS finds unreported crypto, what reporting rules just changed, and where an audit turns criminal.
Key Takeaways
IRS-CI identified $10.59 billion in financial crimes in FY2025, up 15.7% from FY2024Special agents seized 2.35 petabytes of digital data in FY2025, nearly 60% more than the year beforeForm 1099-DA now reports gross crypto proceeds for 2025 transactions, with cost basis added starting in 2026FBAR applies once combined foreign accounts, including hybrid crypto-fiat accounts, exceed $10,000Willful FBAR penalties can reach the greater of $165,353 or 50% of the account’s highest balanceTax evasion under IRC §7201 carries up to 5 years in prison and fines up to $250,000 for individuals
Why Cryptocurrency Remains an IRS Criminal Investigation Priority
Cryptocurrency stays near the top of the enforcement list because it touches nearly every crime category IRS-CI investigates, from fraud to laundering to plain evasion. IRS-CI’s crypto focus has sharpened as digital assets moved into the mainstream financial system, driving up offshore wallet investigations tied to overseas exchanges.
Growth of Digital Assets and Tax Compliance Challenges
More people holding crypto means more mistakes. The IRS treats digital assets as property, not currency, per Notice 2014-21 and Revenue Ruling 2019-24. Every sale or swap can trigger a taxable event under digital asset tax compliance rules; many don’t realize trading Bitcoin for Ethereum counts as a sale, not a transfer.
The IRS Criminal Investigation Division’s Expanding Role
IRS-CI dedicated nearly 64% of its investigative time to tax crimes in FY2025. IRS-CI crypto focus shows in the numbers: $4.5 billion in identified tax fraud, more than double the prior year, with a 25% jump in search warrants and a 14% rise in DOJ referrals.
Roughly 3,000 agents work across 20 field offices and attaché posts in London, Singapore, and Bogotá, reaching the offshore exchanges tied to offshore wallet investigations. This buildout makes cryptocurrency tax enforcement permanent, not a temporary crackdown.
How the IRS Tracks Cryptocurrency Transactions
The IRS tracks cryptocurrency through blockchain forensics software, exchange summonses, and third-party data flowing in automatically. Blockchain tracing capabilities now let agents follow funds through mixers and multiple wallet hops without losing the trail.
Blockchain Analytics and Transaction Monitoring
Blockchain analytics software lets IRS-CI reconstruct a transaction history even across several hidden wallets. These tools helped recover more than 120,000 Bitcoin tied to the Bitfinex hack.
IRS-CI also partners with the J5, a coalition with the UK, Canada, Australia, and the Netherlands, sharing crypto risk indicators with banks worldwide. This coordinated blockchain and tax enforcement means a flagged wallet in one country can trigger scrutiny in another within weeks.
Exchange Reporting and Third-Party Data Matching
Exchanges now report customer transaction data directly to the IRS, closing a gap that once let self-reported numbers go unchecked. This is part of the broader information reporting expansion built on the 2021 Infrastructure Investment and Jobs Act, folding digital asset brokers into the framework banks have followed for decades.
Artificial Intelligence and Digital Asset Investigations
The IRS increasingly uses predictive analytics to flag returns before an agent opens the file. This IRS algorithmic audit selection cross-references wallet activity, exchange filings, and prior returns for patterns of underreporting. Automated IRS enforcement tools let the agency screen far more returns than agents could review by hand, reinforcing blockchain tracing capabilities at scale.
Information Reporting Rules Continue to Expand
Reporting rules for digital assets have expanded sharply since 2021 and show no sign of slowing. Information reporting expansion now reaches custodial exchanges, hosted wallet providers, payment processors, and crypto kiosks.
IRS Reporting Requirements for Digital Assets
Every federal return includes a digital asset question on page one of Form 1040, and answering it incorrectly is itself a problem. Digital asset tax compliance starts with that checkbox, which the IRS uses as a baseline signal under its information reporting expansion push. Gains and losses flow to Form 8949 and Schedule D, the same forms used for stock sales.
Form 1099-DA and Future Reporting Changes
Form 1099-DA now requires brokers to report gross proceeds for sales on or after January 1, 2025, with the first forms landing in early 2026. Starting with 2026 transactions, brokers add cost basis too, closing the biggest gap in crypto reporting.
Recordkeeping Requirements for Crypto Investors
A running log of purchase dates, sale dates, and cost basis is the only way to reconcile broker reports against reality. Digital asset tax compliance depends on this, especially for pre-2026 holdings where brokers may report zero basis and turn a modest gain into an apparent 100% profit. Save records for at least six years, given the extended lookback for large unreported income.
Offshore Wallets and International Crypto Investigations
Offshore wallets draw extra IRS scrutiny because moving assets outside U.S. exchanges makes third-party reporting harder, not impossible, to trace. Offshore wallet investigations have become a growth area for IRS-CI as taxpayers shift funds to overseas exchanges.
Why Offshore Wallets Receive Increased Scrutiny
Investigators often assume, correctly in many cases, that offshore accounts exist to dodge the reporting net covering domestic brokers, one of the clearer IRS foreign income audit triggers. Offshore wallet investigations often start with a foreign exchange summons or a J5 tip. From there, a cross-border IRS asset seizure becomes realistic when funds are routed through weak-reporting jurisdictions.
Foreign Exchanges and International Information Sharing
Foreign exchanges serving U.S. customers increasingly share account data through treaty partnerships, not just voluntary cooperation. FATCA data-sharing agreements with dozens of countries mean a foreign institution may flag a U.S. account before the IRS asks.
Reporting Offshore Digital Assets
Whether a crypto holding must be reported depends on where and how it’s held, not simply that it’s crypto. FBAR reporting for crypto accounts applies only when a foreign account mixes fiat with digital assets, since FinCEN’s 2020 guidance excluded pure crypto-only accounts. FBAR and FATCA reporting rules work together: FBAR kicks in past $10,000 combined foreign accounts, while FATCA’s Form 8938 threshold starts at $50,000 for single U.S. filers.
The table below compares the two offshore reporting regimes side by side.
| Requirement | FBAR (FinCEN Form 114) | FATCA (IRS Form 8938) |
| Filed with | Treasury/FinCEN, separately | Attached to your tax return |
| Threshold | $10,000 aggregate, any time in the year | $50,000 (single, in the U.S.) up to $200,000 abroad |
| Due date | April 15, automatic extension to Oct. 15 | Same as your tax return deadline |
| Pure crypto-only accounts | Not yet reportable (FinCEN Notice 2020-2) | Depends on asset classification |
| Non-willful penalty | Up to $10,000 per violation | Up to $10,000, more for continued failure |
Common Crypto Tax Mistakes That Trigger IRS Attention
- Treating a crypto-to-crypto trade as a non-taxable transfer instead of a sale
- Leaving the digital asset question on Form 1040 blank or answering it incorrectly
- Forgetting that staking and mining rewards count as income the moment you control them
- Assuming a foreign exchange account is invisible, one of the biggest IRS foreign income audit triggers
- Skipping FBAR reporting for crypto accounts because the account also holds fiat currency
- Using multiple wallets without reconciling cost basis across all of them before filing
- Ignoring how the IRS algorithmic audit selection flags mismatched wallet activity against broker filings
Civil Audits vs Criminal Tax Investigations
A civil audit becomes a criminal investigation when the IRS finds willful wrongdoing rather than an honest mistake. Cryptocurrency tax enforcement runs on this two-track system, and knowing which track applies changes how you respond.
When a Tax Audit Becomes a Criminal Matter
A civil agent who spots fraud, a false statement, a hidden wallet, or concealment can refer the case to IRS-CI. Certain FBAR cases selected for criminal investigation fit this pattern: an examiner finds an undisclosed offshore account despite clear evidence of the filing duty.
Potential Civil and Criminal Penalties
Civil penalties include a 20% accuracy-related penalty, rising to 75% for proven fraud. Tax evasion penalties under IRC §7201 mean up to 5 years in prison and fines up to $250,000 for individuals, among the harshest tax evasion penalties on the books. Willful FBAR penalties can reach the greater of $165,353 or 50% of the account’s highest balance, and a January 2026 appeals ruling confirmed reckless disregard alone triggers that maximum.
Best Practices for Crypto Tax Compliance
- Track cost basis per wallet and per lot, since brokers may report zero basis on pre-2026 holdings
- Reconcile every Form 1099-DA against your own records the moment it arrives
- Treat staking, airdrops, and hard forks as income the day you control them, 1099 or not
- Review foreign accounts yearly for both FBAR and FATCA thresholds, since crypto plus fiat changes the analysis
- Build your paper trail before the IRS asks; old screenshots and CSVs are easier to gather now than after a summons
- Anchor your IRS-CI crypto focus awareness to the agency’s actual annual report data, published every December
- Remember that information reporting expansion and blockchain and tax enforcement tools now surface unreported activity faster than ever
- Treat tightening FinCEN and IRS enforcement cooperation as a reason to recheck old filings, not just new ones
- Assume blockchain tracing capabilities cover every wallet you’ve used, and keep digital asset tax compliance records ready year-round
- Treat every filing season as part of the IRS’s broader cryptocurrency tax enforcement push, since IRS-CI crypto focus priorities rarely shrink year over year
How Verni Tax Law Helps Crypto Investors Stay Compliant
Verni Tax Law helps crypto investors sort through the overlapping rules above. I built my practice around this intersection of tax law and accounting. As an attorney, CPA, and MBA with 25+ years of experience, I bring IRS tax fraud defence skills and financial analysis into one room instead of separate professionals who don’t talk to each other.
- I review your full crypto footprint, foreign and domestic, before the IRS decides your obligations for you
- I represent clients directly before IRS-CI and in Tax Court once a matter turns criminal
- I personally handle every case, start to finish
If you’re holding crypto on a foreign exchange, missed a filing, or received a notice that doesn’t match your records, book a confidential consultation.
Voluntary Disclosure Strategies
Coming forward before the IRS finds you is almost always the stronger position. I’ve guided clients through the Offshore Voluntary Disclosure Program and its successor procedures since 2009, evaluating whether Streamlined Filing fits your case under current FBAR and FATCA reporting rules. Reducing willful FBAR penalties through a well-prepared disclosure is often the single biggest outcome I can influence.
Audit Representation and Criminal Defense
When a civil audit shows signs of turning criminal, an attorney who also holds a CPA license changes how the case gets built. I provide IRS tax fraud defense representation directly to IRS-CI, and I’ve handled FBAR cases selected for criminal investigation where early intervention kept matters from escalating.
International Crypto Tax Compliance
Clients in the Philippines, Japan, the UK, and dozens of other countries trust me to handle FATCA data-sharing questions and criminal exposure from FATCA violations without a U.S. trip. I structure plans that account for cross-border IRS asset seizure risk before it turns live, using video consultations across time zones.
Stay Ahead of IRS Crypto Enforcement
Cryptocurrency tax enforcement is no longer a niche IRS specialty. It’s a funded priority backed by blockchain tracing capabilities, automated IRS enforcement, and international intelligence sharing that closes gaps taxpayers once relied on.
Verni Tax Law exists for taxpayers who need that gap closed the first time correctly. Anthony N. Verni approaches a digital asset tax compliance problem the way the IRS does, the legal side and the numbers side, before choosing a strategy. His IRS-CI crypto focus stays current with each annual report, so strategy reflects real enforcement trends, not guesswork.
If you have unreported crypto income, an offshore account, or a notice that doesn’t add up, contact Verni Tax Law for a confidential consultation.
FAQs
Why is cryptocurrency a priority for the IRS Criminal Investigation?
IRS-CI identified $10.59 billion in financial crimes in FY2025, and digital assets now intersect with fraud, money laundering, and tax evasion cases across nearly every category the agency investigates.
Can the IRS trace cryptocurrency transactions?
Yes. Blockchain analytics helped recover more than 120,000 Bitcoin from the Bitfinex hack, proving wallet-hopping and mixers don’t guarantee anonymity.
What is the IRS using blockchain analytics for?
The IRS uses blockchain analytics to reconstruct transaction histories, identify wallet ownership, and match on-chain activity against exchange and broker records.
Are offshore crypto wallets reported to the IRS?
Pure crypto-only foreign accounts aren’t yet FBAR-reportable under FinCEN Notice 2020-2, but hybrid accounts holding both crypto and fiat currency are reportable now.
What are the latest crypto reporting requirements?
Form 1099-DA requires brokers to report gross proceeds starting with 2025 transactions, with mandatory cost basis added for transactions beginning in 2026.
What happens if I don’t report cryptocurrency income?
You risk a 20% accuracy-related penalty at minimum, a 75% civil fraud penalty if intent is proven, and potential prosecution carrying up to 5 years in prison.
Can crypto tax mistakes become criminal cases?
Yes. When an examiner finds evidence of willful concealment rather than an honest error, a civil audit can be referred directly to IRS-CI.
How long should I keep cryptocurrency tax records?
Keep records for at least six years, since the lookback period extends when more than 25% of income goes unreported or Form 8938 isn’t filed.
Should I amend old tax returns for unreported crypto?
In most cases, yes, since voluntary correction before an IRS inquiry begins puts you in a stronger legal and financial position than waiting to be contacted.
How can a tax attorney help with cryptocurrency tax issues?
A tax attorney can evaluate voluntary disclosure options, represent you directly before IRS-CI, and structure FBAR and FATCA filings correctly before penalties compound.
