Seattle Crypto Theft Tax Reporting Guide 2025

Reporting Stolen Cryptocurrency Losses on a Seattle Tax Return image

Introduction

For crypto investors in Seattle, the rapid growth of digital assets brings both opportunities and risks. One of the most devastating setbacks an investor can face is the theft of cryptocurrency

from a digital wallet. While the emotional and financial toll is significant, there’s also a complex tax layer to navigate. Understanding cryptocurrency theft reporting in Washington is crucial to

staying compliant with IRS rules and reducing confusion when filing taxes. This guide provides step-by-step, actionable advice for reporting stolen cryptocurrency losses on a Seattle tax return.


Understanding Cryptocurrency Theft and Tax Reporting

The IRS considers cryptocurrency as property, not currency. This classification means that theft of digital assets must be handled under the property theft rules for tax purposes. However, the Tax Cuts and Jobs Act (TCJA) of 2017 eliminated personal casualty and theft loss deductions for individuals, except in cases of federally declared disasters. This means:

  • Personal investors generally cannot deduct theft losses of cryptocurrency.
  • Business-related crypto thefts may still qualify for a deduction if the digital assets were tied to a trade or business.
Seattle Crypto Theft Documentation Tool

Crypto Theft Documentation Tool

A step-by-step guide for Seattle investors to document stolen cryptocurrency for IRS and Washington state tax purposes

Documentation Progress 0%

Basic Information

Start by providing basic details about the theft incident.

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Evidence Collection

Upload relevant documentation of the theft. This will help with both police reporting and tax documentation.

Drag & Drop or Click to Upload

Supported formats: CSV, PDF, PNG, JPG (Max: 10MB each)

No files uploaded yet.

What to upload: Transaction records, wallet addresses, exchange statements, screenshots of unauthorized transactions, and any communication with exchanges.

Police Report Documentation

Document the details needed for filing a police report with Seattle Police Department.

Seattle Police Department: File your report online at SPD Online Reporting or visit the West Precinct at 810 Virginia St.

IRS Tax Form Guidance

Follow these steps to properly report your cryptocurrency theft on your tax returns.

Form 4684 – Casualties and Thefts

Use this form to report your cryptocurrency theft as a theft loss.

IRS Form 4684
Download
Instructions:
  1. Complete Section B for “Theft” losses
  2. Enter “Cryptocurrency” as the description of property
  3. Report the fair market value at the time of theft
  4. Attach a detailed statement explaining the circumstances

Form 4797 – Sales of Business Property

If you held cryptocurrency as a business investment, use this form to report the loss.

IRS Form 4797
Download
Instructions:
  1. Report the theft loss in Part II
  2. Include the date acquired and date of theft
  3. Report your basis (cost) in the cryptocurrency
  4. Include the fair market value at time of theft
Washington State: Report your theft loss on your Washington state tax return as well. You may need to file an amended return if you’ve already filed.

Documentation Summary

Review your information and export your documentation package.

Personal Information

Name: Not provided

Email: Not provided

Theft Details

Date of Theft: Not provided

Cryptocurrency Type: Not provided

Amount Stolen: Not provided

Uploaded Documents

  • No files uploaded

Police Report Checklist

  • Wallet addresses: Not completed
  • Transaction hash: Not completed
  • Date & time: Not completed
  • Exchange communications: Not completed
Next Steps: Export your documentation package and provide it to your tax professional. File your police report with Seattle PD if you haven’t already.

Therefore, the ability to report a loss depends on whether your crypto holdings were personal investments or part of a business activity.


Documentation Required for Stolen Digital Assets

Accurate documentation is the foundation of Seattle crypto loss tax reporting. If your crypto has been stolen, you need a strong evidence trail to prove the theft occurred. Essential documents include:

  • Transaction history: Blockchain records showing transfers from your wallet.
  • Exchange records: Emails, withdrawal confirmations, and login history.
  • Wallet addresses: Both your original wallet and the wallet where stolen funds were sent.
  • Law enforcement report: Filing a police report in Seattle strengthens your claim.
  • Cybersecurity analysis (if available): Reports from forensic firms can help trace stolen coins.
  • Correspondence: Communications with exchanges, wallet providers, or other authorities.

Step-by-Step Process for Reporting Crypto Theft Losses

Step 1: Identify the Nature of the Loss

  • If the stolen cryptocurrency was held for personal investment, IRS rules currently do not allow theft deductions.
  • If the assets were linked to a trade or business, you may be able to claim a deduction under business theft loss rules.

📊 Suggested Table for the Article

Table: Required Documentation for Reporting Stolen Crypto in Seattle

Documentation TypePurposeExample Evidence
Transaction HistoryShows blockchain transfers of stolen fundsWallet address activity on Etherscan
Exchange RecordsConfirms login/withdrawal activityExchange emails, login IP logs
Wallet AddressesIdentifies original & recipient walletsSource & destination addresses
Police Report (Seattle PD)Official theft report strengthens IRS claimFiled the report with the case number
Cybersecurity AnalysisProfessional verification of theftForensic firm report
CorrespondenceProof of communication with platforms/authoritiesFiled the report with case number

Step 2: Collect Documentation

Begin building your digital wallet theft tax documentation file with transaction records, law enforcement reports, and supporting evidence.

Step 3: File a Police Report in Seattle

Contact the Seattle Police Department and file a detailed theft report. Provide wallet addresses, timestamps, and any identifiable patterns. This step is crucial for both tax and legal purposes.

Step 4: Notify Your Exchange or Wallet Provider

Many exchanges require an official report to investigate. Notifying them ensures you create an additional paper trail.

Step 5: Consult IRS Forms

  • Form 4684 (Casualties and Thefts): Businesses may use this to report deductible theft losses.
  • Form 4797 (Sales of Business Property): Used if reporting as part of business activity.

Step 6: Include Theft Documentation with Your Return

Attach supporting documentation to your federal tax filing to substantiate your claim. Washington state does not impose an income tax, but accurate federal reporting is mandatory.

Step 7: Maintain Long-Term Records

Keep copies of all police reports, blockchain data, and communications for at least seven years in case of an IRS audit.


Washington State and Federal Tax Reporting Requirements

One unique aspect of filing taxes in Washington is that the state does not levy a personal income tax. This means:

  • All cryptocurrency theft reporting is done through the IRS (federal level).
  • Seattle-based investors must follow federal IRS guidelines for losses.
  • Business owners with stolen cryptocurrency may need to account for it in both federal filings and Washington’s Business & Occupation (B&O) tax reporting, depending on the structure of the business.

Evidence Collection for Theft Claims

To strengthen your case when reporting crypto theft:

  • Capture screenshots of blockchain transactions.
  • Record the exact time and date of unauthorized transfers.
  • Secure IP logs and suspicious login activity from exchanges.
  • Provide written confirmation from forensic experts if you hired one.
  • Always maintain a chain of custody for your evidence.

The stronger your evidence, the more likely the IRS will accept your claim (if applicable under business theft loss rules).


Tax Deductions and Implications

  • Personal investors: Cannot currently deduct stolen crypto losses unless connected to a federally declared disaster.
  • Business investors: Theft losses related to trade or business activities may qualify as deductible.
  • Capital gains impact: Even if you cannot deduct the theft, documenting the loss ensures you don’t mistakenly report future taxable gains on stolen coins.

Disclaimer

This guide is for educational purposes only and does not constitute professional tax advice. The IRS rules around cryptocurrency are evolving, and theft-related deductions involve nuanced interpretations. Always consult with a qualified tax professional before filing.


Conclusion and Call to Action

Reporting stolen cryptocurrency on your Seattle tax return requires careful documentation, an understanding of federal tax rules, and proactive steps to build a strong evidence trail. While Washington’s lack of state income tax simplifies the process, the IRS requirements remain strict.

If you’ve experienced crypto theft and are unsure how to proceed, don’t risk errors on your return. Contact a tax professional specializing in cryptocurrency theft reporting in Washington to ensure compliance and protect yourself from unnecessary complications.


❓ FAQ Section

Q1: Can Seattle crypto investors deduct stolen cryptocurrency on taxes?
A: Generally, personal theft losses are not deductible under current IRS rules. Only business-related crypto thefts may qualify.

Q2: What documents are required to report stolen crypto?
A: You’ll need blockchain transaction records, wallet addresses, police reports, and any exchange communications.

Q3: Does Washington state require separate reporting for crypto theft?
A: No. Washington has no state income tax, so all reporting is handled at the federal level.

Q4: Should I file a police report if my crypto is stolen?
A: Yes. Filing with the Seattle Police Department helps establish a theft trail and strengthens your IRS documentation.

Q5: Can stolen crypto still affect my future capital gains taxes?
A: Yes. Properly documenting the theft ensures you don’t mistakenly report future taxable gains on stolen assets.

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