How long should a law firm keep a closed client file, and who decides what to do with it?

There is no single, universal retention period for a closed client file. The right answer depends on the jurisdiction, the type of matter, the contents of the file, and the engagement agreement. A sound retention decision combines legal and ethical obligations with practical risk management.

What drives the retention period

Several factors interact to set the holding period:

• State bar and ethics rules. Most jurisdictions require lawyers to safeguard client property and file materials for a defined minimum after a matter closes. Periods vary by state, so always check the governing bar’s rules of professional conduct.
• Matter type. Files for minors, estate and trust work, real property, intellectual property, or matters with long-tail liability often warrant longer—sometimes indefinite—retention. Routine transactional files may need far less.
• Underlying legal requirements. Tax, employment, and other records embedded in a file may carry their own statutory minimums independent of bar rules.
• Statutes of limitations and malpractice exposure. Files are frequently kept until the relevant limitations periods have run, protecting both client and firm.
• Client property. Original documents, wills, and items belonging to the client generally must be returned or preserved, not destroyed on the firm’s normal schedule.

Who decides

Responsibility ultimately rests with the lawyer and the firm, not the records staff alone. Good practice distributes the decision across roles:

• The engagement letter should state, up front, how long the file is kept and what happens at the end.
• The responsible attorney confirms no holds (litigation, audit, or regulatory) apply before any disposition.
• A firm-wide retention schedule, ideally maintained by a records or information-governance function, sets defaults and triggers consistent, documented destruction.

Good practice

Adopt a written retention schedule mapped to matter types, classify and index files at closing, and apply a formal review before destruction. Notify the client where required, return client property, and keep a destruction log so disposition is defensible. Aligning the program to a recognized standard such as ISO 15489 helps ensure decisions are consistent, accountable, and repeatable.

For more on building defensible schedules and disposition rules, see the compliance and standards topic hub.