An engagement letter from an attorney is the written contract that formally opens the attorney-client relationship. It spells out what legal work the lawyer will do for you, how you will be charged, and what each side is expected to do. Treat it like any other contract: read every section, ask about anything that doesn’t match what you discussed, and keep a signed copy where you can find it later.
Is a Written Engagement Letter Required
Under the ABA Model Rules of Professional Conduct, which most states have adopted in some form, an attorney must communicate the fee basis and scope of work “preferably in writing” before starting the representation or shortly after.1American Bar Association. Model Rules of Professional Conduct – Rule 1.5 Fees For standard fee arrangements, a verbal agreement is technically allowed under the model rules.
Contingency fees are different. Any arrangement where the attorney’s payment depends on winning your case must be in a signed writing that states the percentage the attorney takes, how expenses are deducted, and whether those expenses come off the top before or after the attorney’s share is calculated.1American Bar Association. Model Rules of Professional Conduct – Rule 1.5 Fees Many states go further than the model rules and require a written agreement for all engagements, or for any matter above a certain fee threshold.
If your attorney doesn’t offer a written letter, ask for one. An attorney-client relationship can still exist without one, but you and the lawyer are left exposed to arguments about what was promised.
Scope of Representation
The scope section defines what the attorney will do and, equally important, what they won’t. A lawyer handling a contract dispute is not automatically advising you on the tax consequences of the settlement unless the letter says so. Ethics rules in most jurisdictions require the scope to be specific enough that you and the attorney share the same understanding of the work.2American Bar Association. ABA Tax Times – Engagement Letters
Read the exclusions closely. A letter might cover representation through trial but exclude any appeal. It might cover drafting a will but not updating beneficiary designations on retirement accounts. Anything not listed is almost certainly not included. If something matters to you and it isn’t in the letter, raise it before you sign.
Limited-scope representation, sometimes called unbundled legal services, is a common variant where the attorney handles specific tasks rather than the whole matter. You might hire a lawyer to review a lease that you plan to negotiate yourself. When the engagement is limited that way, the written agreement matters even more. Both the tasks the attorney will complete and the tasks you are keeping should be spelled out so nothing falls through the gap.
Fee Structure and Costs
The fee section explains how you’ll be charged. The common arrangements are:
- Hourly rates. You pay for the attorney’s time, usually billed in six-minute increments (one-tenth of an hour). Different people at the firm often bill at different rates.
- Flat fees. A set price for a defined service, such as a simple will or forming an LLC. The letter should address what happens if the matter turns out to be more complicated than expected.
- Contingency fees. The attorney takes a percentage of your recovery, often between 25% and 40%. This must be in a signed writing. Contingency fees are prohibited in criminal defense cases and most domestic relations matters.1American Bar Association. Model Rules of Professional Conduct – Rule 1.5 Fees
- Retainers. An upfront deposit held in the attorney’s trust account and drawn down as work is done. The letter should say how the retainer is applied, whether unused amounts are refundable, and whether you’ll need to replenish it.
Costs are separate from fees. Court filing fees, copying, expert witness charges, and travel are typically billed to you on top of the attorney’s fee. A well-drafted letter makes this explicit so you aren’t blindsided by a bill that includes thousands of dollars in expenses you didn’t realize you owed.
Your Responsibilities
The letter isn’t one-sided. It also describes what the attorney needs from you: accurate and complete information, timely responses to communications, and payment on schedule. These aren’t formalities. If your lawyer is preparing for a deposition and can’t reach you for three weeks, that’s a real problem for your case.
Ending the Relationship
Every engagement letter should explain how either side can end the representation. As the client, you generally have the right to fire your attorney at any time for any reason. The attorney’s ability to withdraw is more constrained. Under the Model Rules, a lawyer must withdraw if continuing would violate ethics rules or if you are using their services to commit fraud. A lawyer may also withdraw if you fail to pay, make the representation unreasonably difficult, or insist on a course of action the lawyer fundamentally disagrees with.3American Bar Association. Model Rules of Professional Conduct – Rule 1.16 Declining or Terminating Representation
The letter should also address what happens to your files and any unearned retainer when the relationship ends. Ethics rules require the attorney to take reasonable steps to protect your interests after withdrawal, including giving notice, returning your documents, and refunding any advance payment that hasn’t been earned.3American Bar Association. Model Rules of Professional Conduct – Rule 1.16 Declining or Terminating Representation If the letter is silent on any of this, ask.
Conflict of Interest Waivers
Some engagement letters include conflict of interest disclosures or waivers, especially when the attorney or firm has a relationship with another party in your matter. Under the Model Rules, an attorney can’t represent you if doing so creates a direct conflict with another client unless every affected client gives informed consent confirmed in writing.4American Bar Association. Model Rules of Professional Conduct – Rule 1.7 Conflict of Interest Current Clients
If your letter contains a conflict waiver, read it carefully. It should identify the other party, describe the potential conflict, and explain how the attorney plans to handle it. You are not required to sign a conflict waiver, and the attorney should recommend that you consult independent counsel before agreeing. Vague waiver language is a reason to pause and get a second opinion.
Clauses That Deserve Extra Scrutiny
Most engagement letters are routine. A few provisions are worth extra attention:
- Mandatory arbitration clauses. Some letters require you to resolve any dispute with the attorney, including malpractice claims, through arbitration rather than court. Arbitration limits your discovery rights, eliminates jury trials, and typically produces confidential, non-appealable outcomes. Ethics opinions in several jurisdictions require lawyers who include these clauses to explain both the advantages and disadvantages compared with going to court. A letter that presents arbitration as a benefit with no drawbacks is a warning sign.
- Malpractice liability limitations. An attorney generally cannot include a clause limiting their liability for malpractice unless you have your own independent lawyer review the agreement. Language capping the attorney’s exposure or waiving your right to sue is something to question immediately.5American Bar Association. Model Rules of Professional Conduct – Rule 1.8 Current Clients Specific Rules
- Vague scope language. Broad, undefined descriptions of the services give the attorney room to argue later that certain work was never part of the deal. The scope should be specific enough that you could explain it to someone else without guessing.
- Non-refundable retainers. Some jurisdictions allow them; many restrict or prohibit them. If the letter says your retainer is non-refundable regardless of how much work is done, ask why, and check whether it’s permitted where you are.
Reviewing and Signing
Read the entire letter, not just the fee section. Compare the written terms against what you discussed with the attorney. Lawyers sometimes work from templates and forget to update every section, so a letter that mentions litigation when you hired the attorney for a real estate closing is a template error worth catching.
Ask about anything that isn’t clear. You aren’t expected to understand legal terminology on your own, and a good attorney would rather explain the terms up front than argue about them later. If the lawyer resists putting something in writing or pressures you to sign quickly, take that seriously.
Once both sides sign, keep your copy accessible. The engagement letter is a binding contract, and you may need to point back to it if a billing dispute or scope disagreement comes up months into the work. If circumstances change later, most letters can be amended by mutual written agreement, which is far better than discovering a gap when something has already gone wrong.