How long should a business keep tax records?

Illinois Business Tax Record Retention Guidelines

Maintaining proper tax records is essential for compliance, audits, and accurate bookkeeping. In Illinois, businesses should follow these practical guidelines for retaining tax documents.

Recommended Retention Period for Tax Records

• Keep tax records for at least 7 years. This includes federal and state tax returns, supporting documents such as receipts, invoices, payroll records, and bank statements.
• Retain employment tax records for at least 4 years after the date the tax becomes due or is paid, whichever is later. This covers payroll tax filings, employee withholding records, and related documentation.
• Maintain records related to property, such as depreciation schedules and asset purchase documents, for as long as you own the property plus 7 years after disposal.

Operational Considerations

• Electronic Recordkeeping: Illinois allows electronic storage of tax records if they are accurate, accessible, and can be reproduced in legible form upon request.
• Audit Preparedness: Retaining records for 7 years aligns with the typical IRS and Illinois Department of Revenue audit periods, ensuring readiness for any review.
• Compliance with Reporting Requirements: Proper record retention supports timely and accurate tax reporting, payroll processing, and filing of state returns.
• Integration with Bookkeeping and Automation: Use accounting software that automates document retention and categorization to streamline compliance and retrieval.

Summary

As of 2026, Illinois businesses should keep tax records for a minimum of 7 years, with specific attention to employment tax records and property-related documents. Implement electronic recordkeeping and integrate retention policies into your bookkeeping and payroll systems to maintain compliance efficiently.