Maximizing Write-Offs for Lost or Hacked Crypto

The promise of blockchain’s transparency and decentralization has lured many businesses and individuals into the crypto space. Yet with rapid innovation comes increased risk—particularly in the form of hacks, thefts, and scams. According to various industry estimates, billions of dollars’ worth of crypto have been lost or stolen in recent years. As a crypto-focused professional or accounting leader, you may find yourself asking: Can I write off these losses—and if so, how? This blog post dives deep into the nuances of writing off lost or hacked crypto assets, reviewing key points to consider from a tax and accounting standpoint. We’ll also explore how an integrated crypto accounting tool like Integral can make all the difference when it comes to staying compliant, capturing the right documentation, and maximizing the benefits of any allowable write-offs.

Linnea McAlister

Updated on

Feb 28, 2025

Linnea McAlister

Updated on

Feb 28, 2025

Reviewed by

Reviewed by

Reviewed by

Reviewed by

TL;DR

  • Lost or hacked crypto is generally not tax-deductible in many jurisdictions, but the rules vary widely.

  • U.S. taxpayers: Personal casualty and theft losses are largely ineligible unless related to a federally declared disaster. In addition, stolen crypto typically does not qualify for a worthless-securities deduction.

  • Record-keeping and documentation are crucial. Thorough transaction logs, wallet addresses, and proof of ownership can be required to substantiate any potential claim.

Understanding Lost or Hacked Crypto

What Constitutes “Lost” or “Hacked”?

  • Lost Crypto: Refers to coins or tokens that can no longer be accessed because of forgotten private keys, wallet damage, or sending assets to an irretrievable address.

  • Hacked Crypto: Typically involves third-party theft—phishing attacks, smart contract exploits, or other forms of cybercrime—where the rightful owner no longer controls the assets.

Though both scenarios result in you not having your crypto anymore, the tax and accounting treatments can differ based on jurisdiction and the circumstances of the loss.

Common Types of Crypto Theft or Scam

  • Phishing & Rug Pulls: Fake websites, malicious links, or unscrupulous DeFi projects that trick investors.

  • Compromised Wallets: Unauthorized access to hot wallets or exchanges.

  • Dusting Attacks: Attackers send tiny amounts of crypto (“dust”) to unknowing users, then track and link wallets for potential scams or hacks.

No matter the source, the question remains: Are these losses tax-deductible, and how do you prove them?

Regulatory Perspectives on Write-Offs

United States

Under U.S. tax law, the landscape for claiming stolen or hacked crypto is particularly strict:

  • Casualty and Theft Losses: Prior to the Tax Cuts and Jobs Act of 2017, certain personal theft losses could be claimed. Today, personal casualty and theft losses are generally not deductible unless you can prove they resulted from a federally declared disaster—a scenario very unlikely to cover hacked crypto.

  • Worthless Securities Argument: Although some professionals debate whether certain stolen coins might be considered “worthless securities” under IRC §165(g), the IRS generally treats most cryptocurrencies as property rather than securities. Consequently, coins lost to theft do not typically qualify for a worthless-securities deduction. If you’re exploring this route, consult specialized legal or tax advice.

  • Business vs. Personal: If your crypto holdings are part of a business (e.g., a crypto fund, exchange, or investment firm), you may have more flexibility. Business theft or casualty losses may be handled differently, but you must demonstrate that the loss directly relates to the business, is not recoverable, and meets other relevant criteria. Thorough documentation is essential.

Other Jurisdictions

  • United Kingdom (HMRC): The HMRC typically does not consider theft a “disposal” for capital gains purposes, meaning no capital loss claim on stolen assets. For scams in which assets become worthless under “false pretenses,” a negligible value claim might be possible.

  • Australia (ATO): Offers somewhat more leeway. If you can document that your crypto was stolen (with detailed proof of wallet addresses, transactions, etc.), you may claim a capital loss for that tax year.

  • Canada (CRA): The CRA has not issued specific rules on stolen cryptocurrency. While there are precedents for stolen or destroyed property, claiming a capital loss for hacked crypto remains a gray area. Taxpayers must demonstrate a bona fide “disposition” and should consult a qualified Canadian tax professional before assuming a capital loss is allowable.

The bottom line: Local rules differ. It’s important to consult a tax professional familiar with your region’s crypto guidelines.

Practical Steps for Maximizing Potential Write-Offs

Maintain Rigorous Records

When it comes to lost or hacked crypto, strong record-keeping can be the key that unlocks any potential deduction:

  1. Transaction Details: Document the dates, wallet addresses, amounts, and recipients.

  2. Correspondence: If there were phishing emails, suspicious links, or interactions with an exchange’s customer support team, keep all records.

  3. Police/Authority Reports: If your jurisdiction recognizes cyber theft as a standard theft crime, filing a report can demonstrate the legitimacy of the loss.

How Integral Helps: With Integral’s unified dashboard, you can sync all wallets, custodians, and exchange accounts in one place. Every transaction is automatically categorized, dated, and labeled with metadata—an invaluable resource if you need to present documentation to tax authorities or auditors.

Distinguish Personal vs. Business Assets

Many jurisdictions apply different rules for business-owned assets versus personal holdings. If you’re a crypto-focused business, your stolen crypto might be considered a business-related loss:

  • Separate Your Wallets: Keep personal and business funds in distinct addresses.

  • Bookkeeping Consistency: Ensure your accounting software is set up to classify business holdings properly—showing that any theft or loss directly impacts the business accounts.

How Integral Helps: By mapping each wallet and token to your Chart of Accounts (e.g., intangible assets for crypto, expense ledgers for realized losses), you streamline month-end close and keep business transactions separate from personal.

Stay Alert for Future Legislative Changes

Tax treatments evolve as regulators catch up to innovation. The U.S. tax landscape, for instance, may adjust rules around casualty and theft losses if consumer protection regulations shift. Keeping an eye on new bills, IRS announcements, and treasury department releases can help you stay current.

How Integral Helps: Integral automatically updates cost-basis methods and relevant accounting policies as industry standards change, ensuring you’re always ahead of the curve.

RELATED STORIES

Real-World Scenarios

Phishing Attack in the United States

  • A U.S. investor loses 2 BTC (original cost $50,000) to a phishing scam.

  • Under existing U.S. law, personal theft losses generally don’t qualify for a capital loss deduction unless tied to a federally declared disaster.

  • The best strategy: Document everything and keep monitoring legislative updates that could open new avenues for personal theft deductions.

Smart Contract Exploit in Australia

  • An Australian-based DeFi protocol founder has 3 ETH stolen due to a contract bug.

  • They meticulously record the event: transaction ID, hacker’s wallet, cost basis, and date of loss.

  • Since the business is run via a registered entity and the theft meets the ATO’s proof-of-loss criteria, they may be able to offset some of this against capital gains.

Rug Pull in the UK

  • An NFT project rug pull leaves a UK trader with worthless tokens.

  • HMRC typically does not recognize stolen assets as a capital loss, but if the tokens can be classified as “worthless” or “negligible value,” limited relief might be possible.

  • The taxpayer must prove the tokens have zero market value, supported by thorough documentation.

The Role of a Specialized Crypto Accounting Solution

Even if current tax laws don’t allow a straightforward write-off for stolen assets in your region, your aim should be full compliance while preserving any future avenues for claiming losses. An integrated crypto accounting platform like Integral can be a game-changer:

  1. Unified View of All Wallets: Instantly view and reconcile transactions from multiple wallets, exchanges, and chains in a single dashboard.

  2. Automated Categorization: Apply advanced rules to automatically classify income, expenses, and potential losses.

  3. Accurate Reporting: Generate realized and unrealized gains/losses reports, along with month-end closings and ledger entries, in just a few clicks.

  4. ERP Integration: Seamlessly connect to QuickBooks, Xero, NetSuite, or other enterprise systems to push journal entries—no duplicate data entry required.

• 5. Audit-Ready Documentation: Retain detailed transaction records, cost-basis calculations, wallet history, and more. If a claim ever becomes viable, you’ll have all the paperwork ready to defend it.

Conclusion & Next Steps

Though losing crypto to hacks or scams can be devastating, it pays—literally—to stay informed. In many jurisdictions, the odds of successfully claiming a write-off may be slim right now, but they aren’t necessarily zero, especially if you’re holding crypto in a business context. Plus, with ever-shifting regulations, preparedness is your best ally.

To recap:

  1. Keep impeccable records of when and how your crypto was lost.

  2. Differentiate between personal and business holdings for better tax positioning.

  3. Stay vigilant about changes in crypto tax legislation.

  4. Leverage a specialized accounting tool like Integral to simplify your compliance, documentation, and future claims.

Get a demo

See how Integral can help you manage all of your financial data and operations in one place and scale your business with confidence.

Get a demo

See how Integral can help you manage all of your financial data and operations in one place and scale your business with confidence.

Get a demo

See how Integral can help you manage all of your financial data and operations in one place and scale your business with confidence.