How long should a business keep tax records?

Tax Record Retention Requirements in Maine

Maintaining proper tax records is essential for business compliance in Maine. As of 2026, businesses should keep tax records for a minimum period to ensure readiness for audits, reporting, and accounting accuracy.

Recommended Retention Period

• Federal and State Tax Returns: Retain copies of all filed tax returns for at least 7 years. This covers income tax, sales tax, and payroll tax filings.
• Supporting Documents: Keep receipts, invoices, bank statements, and payroll records for at least 7 years to substantiate tax filings.
• Employment Tax Records: Maintain records related to employee wages, tax withholdings, and benefits for a minimum of 4 years after the tax becomes due or is paid, whichever is later.

Operational Considerations

• Bookkeeping and Recordkeeping: Use organized digital or physical filing systems to store tax documents securely and facilitate easy retrieval.
• Compliance and Audits: Retaining records for the recommended periods helps meet IRS and Maine Revenue Services requirements and supports smooth audit processes.
• Automation Tools: Consider implementing accounting software with document storage capabilities to automate record retention and backup.
• Disposal of Records: After the retention period, securely dispose of sensitive tax records to protect business and employee information.