You can sue a lawyer in a civil case when the lawyer’s negligence, breach of duty, fraud, misuse of client money, or other wrongful conduct causes you a legally recognized loss. Simply losing a case or being unhappy with your lawyer’s strategy is usually not enough. In most legal-malpractice claims, the client must prove that the attorney owed a duty, breached that duty, caused actual harm, and produced measurable damages.
The exact claims, deadlines, and required proof depend on state law because legal-malpractice actions are primarily governed at the state level.

What Is Legal Malpractice?
Legal malpractice is professional negligence by a lawyer.
A lawyer is expected to use the level of skill, care, and diligence reasonably expected from attorneys handling similar matters. When an attorney falls below that standard and the mistake causes the client financial harm, the client may have a malpractice claim.
Common examples can include:
- Missing a statute-of-limitations deadline
- Failing to file an important document
- Giving seriously incorrect legal advice
- Failing to investigate a case properly
- Ignoring a significant conflict of interest
- Mishandling settlement funds
- Failing to communicate a settlement offer
- Allowing a case to be dismissed through negligence
- Drafting a legally defective agreement
- Failing to preserve an important legal right
A mistake alone does not necessarily create liability. The client ordinarily has to show that the mistake actually caused damage.
What Must You Prove to Sue a Lawyer?
Although terminology differs among states, a legal-malpractice case usually requires proof of several basic elements.
An Attorney-Client Relationship or Legal Duty
The lawyer must normally have owed you a professional duty.
The easiest way to establish this is through an attorney-client relationship, although some states recognize limited duties to nonclients in particular circumstances.
Evidence may include:
- A written engagement agreement
- Payment records
- Emails
- Court filings identifying the attorney
- Correspondence concerning the representation
The Lawyer Breached the Standard of Care
You must generally show that the attorney failed to act as a reasonably competent lawyer would have acted under similar circumstances.
For example, a lawyer who allows a clearly identifiable filing deadline to expire without justification may have breached the applicable standard of care.
The Lawyer’s Mistake Caused Your Loss
Causation is often the hardest part of a malpractice case.
It is not enough to prove that the lawyer made an error. You usually must show that you would have obtained a better result if the lawyer had handled the matter properly.
California’s current civil jury materials illustrate this principle: malpractice damages can depend on showing what the client would have recovered if competent representation had been provided.
This requirement is sometimes described as proving a “case within a case.”
You Suffered Actual Damages
A malpractice lawsuit normally requires an actual loss.
Examples can include:
- Money lost because a claim expired
- A reduced settlement
- An unnecessary judgment against you
- Loss of valuable property
- Additional legal expenses caused by the error
- Financial harm from defective legal advice
Being angry, disappointed, or dissatisfied with the lawyer does not by itself establish damages.
Can You Sue a Lawyer Just Because You Lost Your Case?
Losing a lawsuit does not automatically mean your attorney committed malpractice.
Trials and negotiations involve uncertainty. A lawyer can provide competent representation and still lose because:
- The evidence favored the other side
- A witness was not believed
- The judge interpreted the law differently
- The jury rejected the claim
- The opposing party had stronger evidence
- The law simply did not support the client’s position
Malpractice focuses on whether the lawyer acted below the required professional standard and whether that failure caused the loss.
A bad result and bad lawyering are not necessarily the same thing.
Can You Sue a Lawyer for Missing a Deadline?
A missed deadline can create a strong malpractice issue when the lawyer was responsible for the deadline and the error destroyed or seriously damaged the client’s legal rights.
One common example is the statute of limitations.
Suppose an attorney accepts a valid personal injury case but fails to file the lawsuit before the legal deadline expires. If the claim is then permanently barred, the client may attempt to prove what the original case would have been worth.
The malpractice court may effectively have to decide both:
- Whether the lawyer negligently missed the deadline.
- Whether the client would probably have won or recovered money in the original case.
A missed deadline therefore does not automatically guarantee compensation if the underlying claim had little or no value.
Can You Sue a Lawyer for a Bad Settlement?
A client may sometimes sue over a settlement, but these cases can be difficult.
A lawyer is expected to provide competent advice concerning settlement offers, but the lawyer generally cannot guarantee that rejecting an offer would have produced a better result.
If a client knowingly accepted a settlement after receiving reasonable advice, later regret usually does not establish malpractice.
The situation is different if the lawyer:
- Never told the client about an important settlement offer
- Provided seriously inaccurate information
- Settled without required client authority
- Concealed a conflict of interest
- Misrepresented the settlement terms
When a client claims that attorney negligence caused an inadequate settlement, proving that a better result would actually have occurred can be demanding.
Can You Sue a Lawyer for Breach of Fiduciary Duty?
A legal-malpractice claim is not the only possible civil claim against an attorney.
Lawyers owe fiduciary obligations to their clients, including duties involving loyalty, confidentiality, honesty, and protection of client interests.
A breach-of-fiduciary-duty claim may arise when an attorney, for example:
- Secretly benefits from a transaction involving the client
- Represents conflicting interests improperly
- Misuses confidential information
- Places personal financial interests ahead of the client’s interests
- Improperly handles client property or money
Whether the claim can be brought separately from malpractice depends on state law and the facts.
Can You Sue a Lawyer for Fraud?
A lawyer can potentially face a civil fraud claim if the lawyer intentionally makes a material false statement, conceals an important fact when legally required to disclose it, and causes someone to suffer damage by relying on that deception.
Fraud differs from ordinary negligence because fraud generally involves intentional or knowing misconduct rather than a careless professional mistake.
Examples might include deliberately lying about money received in a settlement or intentionally falsifying information about how client funds were used.
What If the Lawyer Mishandles Your Money?
Client money is subject to strict professional safeguards.
Settlement proceeds, retainers that remain client property, and other client funds may have to be kept in designated trust accounts rather than mixed with the lawyer’s personal or business funds.
Improper use of client money can potentially lead to:
- A civil lawsuit
- A fee dispute
- Professional discipline
- Suspension or disbarment
- Criminal investigation in serious cases
The available remedy depends on what happened to the money and the law of the jurisdiction.
Is Filing a Bar Complaint the Same as Suing the Lawyer?
A disciplinary complaint and a civil lawsuit serve different purposes.
A state bar or disciplinary authority investigates whether an attorney violated professional rules. Possible consequences can include reprimand, suspension, or disbarment.
A civil malpractice action is generally intended to compensate the injured person for damages.
The ABA expressly explains that violation of a professional-conduct rule does not automatically create a civil cause of action against the lawyer, although an ethics violation can sometimes be relevant evidence concerning professional conduct.
A person may therefore have grounds for a disciplinary complaint without having a successful damages lawsuit, or may potentially have both.
How Long Do You Have to Sue a Lawyer?
Every state has its own statute of limitations for legal-malpractice claims.
The deadline can depend on issues such as:
- When the negligent act occurred
- When the client discovered the problem
- When the attorney stopped representing the client
- The type of claim being asserted
- Whether fraud or concealment occurred
Waiting too long can destroy an otherwise strong case.
Anyone considering a malpractice claim should therefore determine the applicable deadline quickly rather than waiting for an unrelated bar complaint or fee dispute to finish.
Do You Need Another Lawyer to Sue Your Lawyer?
You can theoretically represent yourself in a malpractice lawsuit, but these cases can be technically difficult.
Professional-negligence cases often require expert testimony about what a competent lawyer should have done. California Courts, for example, warns that professional-negligence cases can require expert witnesses and can be especially difficult for self-represented litigants.
A malpractice attorney may need to review:
- The complete case file
- Pleadings
- Court orders
- Emails and letters
- Fee agreements
- Settlement records
- Deadlines
- The underlying evidence
The lawyer evaluating the claim must often determine not only whether the first attorney made a mistake, but whether that mistake caused a financial loss worth pursuing.
What Should You Collect Before Talking to a Malpractice Lawyer?
Keep copies of important documents rather than relying only on your memory.
Useful materials can include:
- The attorney engagement agreement
- Bills and payment records
- Emails and text messages
- Court filings
- Court orders
- Settlement offers
- Settlement statements
- Letters from the lawyer
- Important dates and deadlines
- The complete client file
Preparing a simple timeline showing what happened and when can also make the initial review much easier.
Frequently Asked Questions
Q1. Can I sue my lawyer if they stopped answering my calls?
Poor communication alone does not automatically establish malpractice. A claim becomes stronger if the lack of communication causes actual harm, such as missing a deadline, losing a settlement opportunity, or preventing the client from making an important informed decision.
Q2. Can I sue a lawyer who represented the other side?
Suing opposing counsel is generally harder because that lawyer ordinarily owes professional duties to their own client rather than to you. Certain independent claims may still exist in unusual circumstances involving fraud or other actionable misconduct, but the ordinary attorney-client malpractice theory usually requires a duty owed to the person bringing the claim.
Q3. Can I sue my lawyer and file a bar complaint at the same time?
A civil lawsuit and a disciplinary complaint are separate processes, so one does not necessarily prevent the other. The civil case seeks damages, while the disciplinary system determines whether professional sanctions are appropriate.
Q4. Can I recover the money I paid the lawyer?
Possible recovery depends on the claim and state law. Damages may include losses caused by malpractice, and separate fee-arbitration or refund procedures may sometimes be available when the primary disagreement concerns unreasonable or unearned attorney fees.
