Commingling of Funds: The IOLTA Rule Every Firm Must Know
Commingling — mixing client trust funds with firm or personal funds — is prohibited in every U.S. state and is one of the most common grounds for bar discipline. Here's what it is, what examples trigger violations, and how to prevent it.
The short answer
What is commingling?
Commingling is the mixing of client trust funds with firm operating or personal funds in the same account. Client funds — settlement proceeds, retainers, cost advances, anything received on a client's behalf — must be held in a separate IOLTA trust account, never mixed with money that belongs to the firm or the attorney. The prohibition is universal across all 50 states and DC, and violations are among the most serious disciplinary matters a state bar handles.
What counts as commingling
These are the most common commingling violations seen in bar disciplinary proceedings.
Leaving earned fees in trust
Once a contingency fee is earned — typically at settlement — it must be transferred to the firm's operating account promptly. Leaving it in the IOLTA account, even for a few days while you 'get around to it,' is commingling.
Paying firm expenses from IOLTA
Paying for office supplies, software subscriptions, court filing fees (as a firm expense, not a client advance), or any other firm operating cost from the trust account mixes firm transactions with client funds.
Excessive firm funds as a 'buffer'
Keeping more firm money in the IOLTA account than the minimum needed to cover bank fees — treating it as a reserve or overdraft cushion — is commingling. Only the minimum necessary for bank charges is permitted.
Depositing personal funds to fix a shortfall
If a client's matter sub-ledger goes negative, depositing personal or firm funds to fix it is technically commingling — though most bars treat a prompt correction as evidence of good faith. Document it carefully and consult bar counsel.
Not promptly withdrawing earned fees
A settlement check deposited into IOLTA represents both the client's net amount and the attorney's fee. The fee portion must be withdrawn promptly — the longer it sits in IOLTA, the clearer the commingling becomes.
Co-mingled operating and trust in one account
Using a single account for both firm operating funds and client trust funds — even if you track them separately in a spreadsheet — is the textbook definition of commingling and is prohibited in every state.
Consequences of commingling
Bar discipline for commingling ranges based on intent, harm, and history.
A first-time, unintentional, minor commingling violation discovered during a routine audit — such as leaving a small fee in trust for a few days — may result in a private reprimand and a requirement to complete trust accounting CLE.
Repeated minor violations, failure to maintain required records, or commingling that put clients at risk of loss — even temporarily — typically results in a public reprimand, supervised probation, and CLE requirements.
Deliberate commingling, using client funds to float firm expenses, or commingling that accompanied dishonest conduct typically results in a suspension ranging from a few months to several years.
Conversion — treating client funds as the attorney's own — and intentional, systematic, or repeated commingling that causes client loss or is accompanied by misrepresentation to the bar typically results in disbarment.
Structural separation, not manual discipline
Disbo prevents commingling through structural account separation enforced at the transaction level — not through rules you have to remember to follow. The platform maintains a hard separation between your IOLTA trust account and your operating account, and flags any transaction that would mix funds across that boundary.
Disbo tracks your IOLTA trust account and operating account as separate entities. No transaction can cross the boundary without explicit authorization and documentation.
When a contingency fee is earned, Disbo prompts the attorney to initiate the transfer from IOLTA to operating — with a timestamp and authorization record. Earned fees don't sit in trust.
Any transaction that would move operating funds into IOLTA (beyond the permitted bank-fee minimum) or pay operating expenses from IOLTA is flagged before processing.
Every account transfer is logged with a tamper-proof timestamp, user identity, and authorization record — so you can demonstrate to bar auditors that every IOLTA transaction was proper.
Frequently asked questions
What is commingling of funds in attorney trust accounts?
Commingling is mixing client trust funds with attorney or firm funds in the same account. It's prohibited in every U.S. state and is one of the most common grounds for bar discipline. Client funds must be held in a separate IOLTA trust account.
What are examples of commingling in an IOLTA account?
Common examples: leaving earned fees in trust after they're earned, paying firm expenses from IOLTA, keeping excess firm funds in IOLTA beyond a bank-fee cushion, depositing personal funds for any reason beyond covering bank fees, and using one account for both operating and client funds.
Is any firm money ever allowed in an IOLTA account?
Only the minimum amount needed to cover bank service charges. That's the sole exception in most states. Any firm money beyond that narrow purpose is commingling — not a buffer, not a reserve, not a float.
What are the consequences of commingling?
Consequences range from private reprimand for minor unintentional violations to suspension or disbarment for deliberate, repeated, or dishonest commingling. Even accidental commingling discovered during an audit can result in discipline.
How is commingling detected?
Commingling is typically detected through overdraft notifications (which trigger bar investigations), client complaints, random bar audits, or disciplinary investigations that expose trust account records. Bar auditors can see commingling in your ledger history.
How does Disbo prevent commingling?
Disbo maintains hard separation between IOLTA and operating accounts at the transaction level. When a fee is earned it prompts transfer to operating. Any transaction that would move operating funds into IOLTA (beyond bank-fee limits) or pay operating expenses from IOLTA is flagged immediately.
Complete IOLTA compliance guide and 50-state rules.
Monthly reconciliation is what catches commingling early.
Overdrafts and commingling are the two most common bar violations.
How to properly disburse settlement proceeds from IOLTA.