How long must an Illinois lawyer keep closed client files, and can the firm destroy them without notifying former clients?

Plain-English summary

A firm facing substantial storage costs wants to destroy closed-matter files more than ten years old. Its standard engagement letter tells clients it reserves the right to destroy retained documents within a reasonable time after the engagement ends. It asks whether it may do so ten years out and without additional notice to former clients.

The opinion separates the mandatory record categories from ordinary closed-file materials. Illinois Rule 1.15(a) requires complete trust-account and client-property records to be kept at least seven years. Illinois Supreme Court Rule 769 adds two categories: paragraph (1) client-identity records (name, last known address, whether the matter is open or closed), which carry no time limit and so should be preserved indefinitely, and paragraph (2) financial records (bank statements, billing records, checks, ledgers, tax records), which must be kept at least seven years. Beyond those, the opinion finds no Illinois rule sets a minimum retention period for ordinary file materials, so it looks to other authorities.

Drawing on ISBA Opinion 12-06, ABA Informal Opinion 1384, Restatement Section 46, and opinions from Missouri, Ohio, Tennessee, Arizona, Iowa, and West Virginia, the opinion concludes a ten-year retention period is clearly reasonable and a seven-year default is also reasonable, noting it aligns with the trust-record period and the six-year statute of repose for legal malpractice (735 ILCS 5/13-214.3(c)). Lawyers and adequately informed clients may agree on any retention period (Rule 1.0(e)). On notice, the opinion concludes that because neither Rule 1.15(a) nor Rule 769 requires notice before destroying records after the retention period, and because locating former clients years later is burdensome and often futile, notice generally is not required, especially where the engagement letter already disclosed the policy. Any disposal must protect confidentiality under Rule 1.6.

In practice

Under this opinion, a firm may treat a ten-year (or generally a seven-year) period as a reasonable retention window for ordinary closed files, and may dispose of them afterward without separately notifying former clients, particularly where the engagement letter disclosed the policy. The opinion holds that three categories carry their own rules: trust and client-property records (seven years under Rule 1.15(a)), financial records (seven years under Supreme Court Rule 769(2)), and client-identity records (indefinitely under Rule 769(1)). It also holds that original deeds, wills, and other items of intrinsic value should be preserved or returned, and that disposal must safeguard client confidentiality under Rule 1.6.

Common questions

Q: How long does an Illinois lawyer have to keep a closed client file?

A: The opinion concludes ten years is clearly reasonable and seven years is a reasonable default for ordinary file materials, while trust and financial records must be kept seven years and client-identity records indefinitely.

Q: Do I have to notify former clients before destroying their files?

A: Generally no. The opinion concludes notice is not required after the retention period, especially where the engagement letter disclosed the destruction policy, since the governing rules impose no notice requirement.

Q: Are there documents I should keep longer?

A: Yes. The opinion says original deeds, wills, and other documents with intrinsic value should be preserved or returned, and specific situations (pending malpractice, criminal, disciplinary, or other litigation) may warrant longer retention.

Background and rules framework

The opinion interprets Illinois Rule of Professional Conduct 1.15(a) (trust-account and client-property records), Rule 1.6 (confidentiality of information, including Comment 18), and Rule 1.0(e) (informed consent), together with Illinois Supreme Court Rule 769 (client-identity and financial records). These correspond to Model Rules 1.15, 1.6, and 1.0.

Citations and references

Rules:

• Illinois RPC 1.15(a) (MR 1.15): trust-account and client-property records, seven years
• Illinois RPC 1.6 and Comment 18 (MR 1.6): confidentiality in disposal of files
• Illinois RPC 1.0(e) (MR 1.0): informed consent to a retention agreement
• Illinois Supreme Court Rule 769(1), (2): client-identity records (indefinite) and financial records (seven years)

Statutes:

• 735 ILCS 5/13-214.3(c): six-year statute of repose for legal-malpractice claims

Other opinions cited:

• ISBA Opinion 12-06 (2012); ABA Informal Opinion 1384 (1977); Restatement (Third) of the Law Governing Lawyers Section 46; Missouri Rule 4-1.22; Ohio, Tennessee, Arizona, Iowa, and West Virginia file-retention opinions

See also

• ISBA Ethics Op. 12-06: Maintenance of Client Files and Records
• NY State Bar Op. 1077: Scanning and Destroying Original Retainer Agreements
• NY State Bar Op. 940: Off-Site Backup Tapes and Retaining Records in Original Form

Source

• Landing page: https://www.isba.org/ethics/opinions/1702