Tax Identity Theft: Businesses Are at Risk, Too

Tax identity theft is no longer just an issue for individual taxpayers. Businesses of all sizes are increasingly targeted through Employer Identification Numbers (EINs), payroll systems, and fraudulent tax filings. These attacks can lead to delayed refunds, unauthorized payroll filings, IRS notices, financial losses, and reputational damage.

Understanding how business tax identity theft occurs — and how to prevent it — can help protect your company’s financial and operational stability.

What Is Business Tax Identity Theft?

Business tax identity theft occurs when criminals use a company’s information to commit tax fraud or other financial crimes. Fraudsters may use stolen EINs, payroll data, or business credentials to file false tax returns, open fraudulent accounts, or impersonate company executives.

Businesses commonly targeted include:

• Sole proprietorships
• Partnerships
• Corporations
• Limited liability companies (LLCs)

Learn more from the IRS about business identity theft: IRS Business Identity Theft Guidance

Common Ways Business Tax Identity Theft Happens

Cybercriminals use several methods to steal business tax information, including:

• Filing fraudulent tax returns using a company EIN
• Impersonating executives to obtain W-2 employee data
• Sending fake IRS correspondence
• Hacking payroll or accounting systems
• Using stolen data to create synthetic business identities

These schemes may go unnoticed until the IRS rejects a legitimate filing or flags suspicious activity.

Warning Signs to Watch For

Businesses should monitor for signs of possible identity theft, including:

• Rejected e-filed tax returns
• Unexpected IRS transcripts or notices
• Missing IRS correspondence
• Unauthorized payroll filings
• Suspicious changes to business credit activity

If your business receives IRS Letter 5263C or 6042C, it could indicate verification concerns or potential fraud activity requiring immediate attention.

How Businesses Can Protect Against Tax Identity Theft

Preventing business identity theft requires a proactive cybersecurity and tax compliance strategy.

1. Prioritize Cybersecurity

Develop a formal cybersecurity plan that outlines how your business detects, responds to, and recovers from potential data breaches or fraud attempts.

Key safeguards may include:

• Routine security assessments
• Incident response procedures
• Employee access controls
• Regular system updates

2. Safeguard Sensitive Business Data

Store tax records, employee information, and financial documents securely. Limit access to EIN information and only share sensitive data through secure or encrypted channels.

Businesses should also:

• Shred unnecessary documents
• Update IRS responsible party information
• Verify requests for sensitive information

3. Strengthen Password and Login Security

Weak password management can expose critical tax and payroll systems to cybercriminals.

Best practices include:

• Multi-factor authentication (MFA)
• Password management tools
• Restricted administrative access
• Frequent password updates

4. Use Updated Cybersecurity Technology

Modern cybersecurity tools can help reduce risk and detect suspicious activity early.

Businesses should consider:

• Firewalls
• Antivirus software
• Antimalware protection
• Spam filtering
• Data encryption
• Secure cloud backups

Cybersecurity guidance for small businesses: CISA Cybersecurity Resources

5. Train Employees on Fraud Prevention

Employee awareness is one of the strongest defenses against phishing and social engineering scams.

Training should cover:

• Suspicious email detection
• IRS impersonation scams
• Secure document handling
• Reporting suspicious activity

Employees should also understand that the IRS generally does not initiate contact through email, text messages, or social media requesting sensitive information.

6. Monitor Business Credit Reports

Regularly reviewing business credit activity can help detect fraudulent accounts or unauthorized financial activity early.

Businesses can monitor reports from:

• Equifax
• Experian
• TransUnion

Real-time alerts may help identify suspicious changes faster.

7. Secure Tax Filings and IRS Accounts

Work with trusted tax professionals and use secure client portals when sharing financial documents.

Businesses should promptly investigate:

• Rejected filings
• Unusual IRS notices
• Unexpected transcript requests
• EIN-related discrepancies

IRS Form 14039-B information: IRS Form 14039-B Instructions

Why Early Detection Matters

No security measure is completely fail-safe. Identifying suspicious activity early can reduce financial losses, minimize IRS complications, and help businesses recover faster.

A proactive approach to cybersecurity, employee education, and tax compliance can significantly lower the risk of business tax identity theft.

How Professional Guidance Can Help

Managing cybersecurity risks and IRS compliance can be complex. Working with experienced tax advisors can help businesses:

• Evaluate fraud risks
• Improve security practices
• Respond to IRS notices
• Protect tax filings and payroll systems
• Strengthen compliance procedures

Business tax identity theft can create serious financial and operational challenges if left unaddressed. Taking preventive measures now can help protect your EIN, payroll systems, tax filings, and sensitive business data.

Contact the team at THF to discuss strategies for protecting your business against tax fraud and strengthening your cybersecurity and tax compliance practices.