Every law firm in Ontario has to face the same problem eventually: what to do with closed client files.

At first, the solution is simple—put the file in a cabinet.

But over time, files multiply. Cabinets become storage rooms. Then offsite storage. Then thousands of dollars a year to house documents that may never be accessed again… until the moment they’re needed most.

Whether you’re a solo practitioner or a growing firm, understanding your retention obligations—and setting up an efficient, compliant system to meet them—protects your clients, your reputation, and your practice.

Why Retain Closed Client Files?

The Law Society of Ontario (LSO) outlines four main reasons:

1. Legal and regulatory requirements
   You may be required by law to retain specific records under legislation like the Income Tax Act, Business Corporations Act, or LSO By-Law 9.
2. Professional liability defense
   If a claim or complaint arises years after the file closes, your records may be your only line of defense.
3. Client benefit
   Clients may rely on you to store their documents securely until they’re needed. In family, real estate, and estate law, that might not happen for decades.
4. Future use or reference
   Retained files may help with future matters involving the same client, or with precedent-building—especially if stripped of identifying details.

What Must You Keep?

Licensees must store:

• Identification and verification records
• Signed retainers, instructions, refusals, settlement positions
• Memos, call notes, time entries, billing records
• Legal opinions, expert reports
• Conflict check data
• Original documents (if not returned)

You’re also required to maintain a referral fee ledger, records of all funds received and disbursed, and supporting documentation in accordance with By-Law 9—even if they’re stored separately from the client file.

If you’re not sure which documents fall under mandatory vs best-practice retention, the safest approach is to treat all client-related materials as sensitive and potentially necessary for future defense or compliance.

How Long Should You Retain Files?

The LSO recommends a general guideline of 15 years from the date a file is closed. But it also warns that:

• Claims can arise decades later
  
• Exceptions apply for minors, incapacitated clients, or cases involving allegations of concealment
  
• Some areas—like wills, trusts, and POAs—require retention until well after the testator’s death
  

A LAWPRO® study shows that real estate and family law claims are reported even 40+ years after the original work was completed. In short, erring on the side of longer retention is often wise.

Original Documents Must Be Handled With Care

You must never destroy original client documents like:

• Wills and holograph wills
• Trust deeds
• Powers of attorney
• Court orders
• Minute books or corporate seals

Return them to the client where possible. If you retain them, you assume custodial responsibility—meaning your systems must ensure their safety until they are returned or the client gives clear instruction otherwise.

This is one of the biggest risks of traditional paper storage: damage, misplacement, or loss during firm closure, retirement, or transitions.

Why Scanning and Digital Storage Is the Smart Move

Storing hardcopy documents long-term is expensive and risky. Electronic file storage gives you:

• Easy retrieval for audits, litigation, or client requests
• Controlled access to meet confidentiality standards
• Disaster recovery through secure, encrypted backups
• Streamlined compliance for document destruction policies

But there’s a catch: not all scanning solutions meet legal confidentiality and regulatory requirements. You need a partner who understands the legal industry.

How Ash Conversions Supports Law Firms

At ACI, we work with lawyers across Canada to digitize their archives while meeting LSO guidelines.

We provide:

• Professional-grade, secure scanning with proper indexing
• Secure, encrypted digital backups and cloud options
• Guidance on how to handle original documents
• Chain-of-custody protection
• Searchable archives for fast access and easy retrieval

We also assist with creating written retention policies, defining destruction timelines, and establishing protocols that align with legal obligations.

Questions Law Firms Ask

Can I destroy paper copies after scanning?
If you’re retaining digital copies that are secure, accessible, and readable, and you’re not required to keep the original (like a will), you generally can—but confirm this against specific LSO or statutory requirements.

What if a client never updates their address for document return?
Keep detailed communication records and consider setting a policy in your retainer about the responsibility for updated contact info.

Do I need to keep everything indefinitely?
No—but you do need a clear policy, retention timelines, and a way to securely dispose of data when appropriate.

What happens if I retire or sell my practice?
You need to plan for continuity in document retention and ensure clients’ original documents are protected. This is another area where digital files help reduce complexity.

Can I store scanned client files in the cloud?
Yes—but security, redundancy, and accessibility must be maintained. ACI’s cloud systems meet strict legal industry standards.

Don’t Let Storage Become a Liability

The longer your practice runs, the more your risk grows—unless you create a sustainable retention and digitization system.

Ash Conversions can help you eliminate paper burdens, stay compliant, and reclaim your storage space without compromising on legal standards or client trust.

👉 Click here to explore our legal document scanning services

Or contact us to discuss a tailored scanning and digital retention solution for your practice.