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Key Facts
- National overview: ABA Formal Ethics Opinion 11-458 states that periodic, incremental increases in a lawyer’s regular hourly billing rates are generally permissible if clearly communicated and accepted at the start and if the increases are reasonable under the circumstances.
- National overview: ABA Formal Ethics Opinion 11-458 states that fee modifications that change the basic nature of the arrangement or significantly increase the lawyer’s compensation ordinarily will be unreasonable absent an unanticipated change in circumstances.
- National overview: ABA Formal Ethics Opinion 11-458 states that fee changes involving a lawyer acquiring an interest in the client’s business, real estate, or other nonmonetary property ordinarily require compliance with Rule 1.8(a).
- National overview: ABA Model Rule 1.5(a) prohibits making an agreement for, charging, or collecting an unreasonable fee or an unreasonable amount for expenses.
- National overview: ABA Model Rule 1.5(b) requires communicating the scope of the representation and the basis or rate of the fee and expenses, and it also requires communicating changes to those bases or rates.
- State level: New York’s Part 1200 Rule 1.5(b) requires communicating the scope and the basis or rate of fees and expenses to the client, and communicating changes to that scope or basis or rate.
- State level: California State Bar guidance states that fee agreements must be in writing when the lawyer expects fees and costs for the case to total $1,000 or more.
- National overview: The ABA Formal Ethics Opinions archive lists Formal Opinion 11-458, titled “Changing Fee Arrangements During Representation,” as dated August 4, 2011.
Last reviewed: May 2026. Legal rules, forms, deadlines, and procedures can change by jurisdiction, agency, and court system.
- What ABA Formal Ethics Opinion 11 458 covers
- The baseline in ABA Model Rule 1.5 reasonableness and communication
- ABA guidance on incremental rate increases and major fee modifications
- When a fee change points toward Rule 1.8(a) compliance
- State law examples for communication and writing expectations
- New York example for communicating fee terms and changes
- California example for fee agreement writing thresholds
- How these pieces fit together (and a common confusion)
- Sources
Changing fee terms during an ongoing representation can raise questions because the fee’s scope, rate, and overall expectations may shift as work continues.
What ABA Formal Ethics Opinion 11 458 covers
ABA Formal Ethics Opinion 11-458 is titled “Changing Fee Arrangements During Representation,” and the ABA ethics archive lists the opinion as dated August 4, 2011. The opinion addresses how lawyers can ethically modify fee arrangements during an ongoing client-lawyer relationship, including incremental hourly-rate changes and other fee-deal modifications (ABA Formal Ethics Opinion 11-458).
The baseline in ABA Model Rule 1.5 reasonableness and communication
ABA Model Rule 1.5 sets a baseline that focuses on both (1) whether a fee is reasonable and (2) whether the lawyer communicates the fee’s scope and pricing basis or rate to the client. Model Rule 1.5(a) prohibits agreeing to, charging, or collecting an unreasonable fee or unreasonable expenses, and Model Rule 1.5(b) requires communicating the scope of the representation and the basis or rate of fees and expenses, along with communicating changes to those bases or rates (Rule 1.5: Fees).
ABA guidance on incremental rate increases and major fee modifications
ABA Formal Ethics Opinion 11-458 treats some kinds of fee changes as easier to manage under a reasonableness-and-communication lens than others. The opinion states that periodic, incremental increases in a lawyer’s regular hourly billing rates are generally permissible when the practice is communicated clearly to and accepted by the client at the commencement of the client-lawyer relationship and the periodic increases remain reasonable under the circumstances (ABA Formal Ethics Opinion 11-458).
The same opinion draws a clearer line when a proposed change alters the structure of the fee arrangement itself. It states that modifications that change the basic nature of a fee arrangement or significantly increase the lawyer’s compensation ordinarily will be unreasonable absent an unanticipated change in circumstances (ABA Formal Ethics Opinion 11-458).
Compact comparison what changes trigger different ABA reactions
| Fee change described in ABA guidance | ABA Formal Ethics Opinion 11-458 framing | Why the distinction matters in practice |
|---|---|---|
| Periodic, incremental hourly-rate increases | Generally permissible if clearly communicated and accepted at the start and the increases are reasonable under the circumstances | This keeps the fee arrangement’s core structure the same while the hourly rate changes in a predictable way. |
| Changes that alter the basic nature of the fee or significantly increase compensation | Ordinarily unreasonable absent an unanticipated change in circumstances | This shifts the basic nature of the fee arrangement rather than a routine rate adjustment. |
| Changes involving lawyer acquiring an interest in client business/real estate/other nonmonetary property | Ordinarily require compliance with Rule 1.8(a) | The change ties into the Rule 1.8(a) interest-in-property compliance category. |
When a fee change points toward Rule 1.8(a) compliance
One scenario in ABA Formal Ethics Opinion 11-458 highlights a different compliance theme: fee changes that involve acquiring an interest in client property. The opinion states that changes involving a lawyer acquiring an interest in the client’s business, real estate, or other nonmonetary property will ordinarily require compliance with Rule 1.8(a). This article stays within that excerpted statement and does not expand into Rule 1.8(a)’s specific conditions because the underlying rule text was not part of the fetched evidence.
State law examples for communication and writing expectations
Even when an ABA-based communication theme appears in multiple legal ethics frameworks, state rules and guidance can use different wording and requirements. The examples below focus on two states where the key points show up directly in published materials.
New York example for communicating fee terms and changes
- New York’s Part 1200 Rules of Professional Conduct include a Rule 1.5(b) communication requirement that asks lawyers to communicate the scope of the representation and the basis or rate of the fee and expenses, and to communicate changes to the scope or basis/rate to the client (New York State Unified Court System Part 1200 Rules of Professional Conduct (Rule 1.5 Fees and Division of Fees)).
California example for fee agreement writing thresholds
- California State Bar guidance states that fee agreements must be in writing when the lawyer expects fees and costs for the case to total $1,000 or more (What to Expect Regarding Fees and Billing).
How these pieces fit together (and a common confusion)
A frequent confusion in discussions about fee changes is treating any upward adjustment as the same ethical category. ABA’s guidance distinguishes predictable, incremental hourly-rate increases—generally permissible under the opinion’s stated communication-and-reasonableness conditions—from changes that alter the basic nature of the fee or significantly increase compensation without an unanticipated circumstance. That distinction helps explain why two lawyers can both “raise fees” yet raise different ethics questions under ABA’s approach.
Sources used here focus on the text excerpts from the ABA opinion and ABA’s Rule 1.5 model rule, plus two state materials that illustrate how communication and writing expectations show up in practice. For another ethics-focused fee topic, see contingent fees—necessary or excessive.
