Polymarket Hack: How to Use a Crypto Tax Calculator for Stolen Funds
A recent hack targeting Polymarket's frontend has led to $3 million in crypto stolen from users. If you were affected, you need to understand the tax implications. A crypto tax calculator can help you determine your loss and potentially reduce your tax bill. This article explains what happened and how to handle stolen crypto on your taxes.
What Happened in the Polymarket Hack?
On June 25, 2026, a third-party vendor compromise allowed hackers to steal $3 million from Polymarket users. The attack targeted the frontend interface, not the blockchain itself. Users lost funds directly from their wallets. This event underscores the risks of using decentralized platforms.
Tax Implications of Stolen Crypto
When crypto is stolen, it is treated as a loss for tax purposes. You can claim a capital loss if the theft is reported to authorities and you have documentation. A crypto tax calculator can help you compute the loss amount based on your cost basis. Using crypto tax software simplifies this process by tracking your transactions and generating a crypto tax report.
How to Calculate Crypto Taxes on Stolen Funds
To calculate crypto taxes after a theft, you need to know the fair market value of the stolen assets at the time of the theft. A crypto capital gains calculator can handle this calculation. You subtract this value from your cost basis to determine the loss. This loss can offset other capital gains. Crypto tax software like CryptaTax automates this and helps you file accurately.
Steps to Take After a Crypto Theft
First, report the theft to local law enforcement and the platform. Second, gather all transaction records. Third, use a crypto tax calculator to compute your loss. Fourth, file your taxes with the loss claimed. Crypto tax software can generate the necessary forms. Remember to keep records in case of an audit.
Why Use Crypto Tax Software?
Manual calculation of crypto taxes is error-prone, especially after a hack. Crypto tax software imports your transaction history, calculates gains and losses, and produces a crypto tax report. It ensures you comply with tax laws. For stolen assets, it helps you accurately claim a loss. A crypto tax calculator within the software can handle complex scenarios like forks or airdrops.
How to File Crypto Taxes After a Hack
To file crypto taxes after a hack, you need to report the loss on Schedule D (or equivalent in your country). Include details of the theft. Using crypto tax software simplifies this. It will generate the correct forms and ensure you don't miss any deductions. Learn how to file crypto taxes correctly with a reliable tool.
Preventing Future Losses
Use hardware wallets and avoid keeping large funds on platforms. Enable two-factor authentication. Regularly review your transaction history. A crypto tax report can also help you track your holdings. If you trade frequently, consider crypto tax software to monitor your portfolio and tax liabilities.
Illustrative Scenario
To illustrate how this applies in practice, consider the following scenario: Michael, a US-based trader, lost 10 ETH worth $20,000 in the Polymarket hack. He had purchased the ETH for $15,000. Using a crypto tax calculator, he determines a capital loss of $5,000. He reports the theft to the police and uses CryptaTax to generate a crypto tax report. The loss reduces his tax bill for the year.
Source: Protos