Most attorney general investigations run one to three years from start to finish. Straightforward consumer complaints can wrap up in a few months, and complex multi-state matters sometimes stretch past five years. There is no statutory clock on most of these inquiries, so how long an attorney general investigation takes depends almost entirely on the scope of the alleged misconduct, how much evidence has to be reviewed, and whether the target cooperates or fights every step.
Typical Timelines by Case Type
A single-company consumer complaint with a clear factual record and a cooperative target can resolve in a matter of months, often through informal mediation before any formal investigation opens. A standard formal investigation into deceptive advertising, billing practices, or similar conduct usually lands in the one-to-three-year range. Complex fraud investigations spanning multiple business entities or several years of activity commonly run three to five years. The largest multi-state matters, such as opioid or tech antitrust cases, can run considerably longer than that.
The Phases That Consume the Time
Preliminary Inquiry
Before committing significant resources, investigators pull together the complaints on file, gather publicly available information about the target, and assess whether the facts point to an actual violation of law or just a handful of unhappy customers. This screening phase runs from a few weeks to a few months. If the preliminary evidence is thin, the matter may close or move to mediation without ever becoming a formal investigation.
Formal Investigation and Evidence Gathering
Once the AG’s office decides a full investigation is warranted, it gains access to Civil Investigative Demands (CIDs), which are written orders requiring the target to hand over documents, answer written questions, or sit for sworn testimony. Federal law authorizes CIDs whenever the Attorney General has reason to believe a person possesses materials relevant to an investigation, and the demand can require document production, written interrogatory answers, oral testimony, or any combination of those.1Office of the Law Revision Counsel. 31 USC 3733 – Civil Investigative Demands State AG offices have similar authority under their own consumer protection statutes. The Consumer Financial Protection Bureau describes CIDs as “investigational subpoenas” that can demand documents, emails, reports, answers to written questions, and oral testimony.2Consumer Financial Protection Bureau. Investigatory Authority
This phase is where most of the time gets consumed. The target may need weeks or months to collect and review the requested records, especially when a CID covers years of business activity. Attorneys on both sides negotiate over the scope of what must be produced, and contested demands can lead to court fights that add months to the timeline.
Analysis and Review
After the evidence comes in, the AG’s legal team reviews internal emails, financial records, consumer contracts, and witness testimony to decide whether the facts support a violation of law. In large cases, that means sifting through hundreds of thousands of documents and working with economists or data analysts. The analysis phase alone can take six months to over a year in complex matters.
What Makes One Investigation Faster Than Another
A handful of variables account for most of the gap between a six-month investigation and a five-year one.
- Complexity and scope. An inquiry into one company’s misleading return policy is a different project than untangling a multi-year fraud scheme spanning several business entities. More complex misconduct means more evidence to gather and analyze.
- Volume of evidence. A CID that produces a few boxes of records can be reviewed in weeks. One that produces millions of emails and financial records takes months of attorney and analyst time.
- Target cooperation. Companies that respond promptly and produce complete records shorten the process considerably. Targets that resist, produce incomplete records, or challenge every demand in court can add a year or more in litigation over evidence alone.
- AG office resources. Offices vary in staffing and budget. A well-funded office with a dedicated consumer protection division moves faster than one juggling hundreds of cases with a skeleton crew. Heavy caseloads force prioritization, and lower-priority investigations sit dormant for stretches.
- Multi-state coordination. When the target operates across state lines, several AG offices often investigate together, which adds coordination overhead.
Why Multi-State Investigations Take Longer
When a company’s practices affect consumers in many states, attorneys general frequently form working groups rather than duplicate effort. The states most directly harmed and with the resources to lead typically take on the role of coordinating state or chair, managing the day-to-day investigation, coordinating with any federal agencies reviewing the same conduct, and facilitating settlement discussions.3Federal Trade Commission. Protocol for Coordination in Merger Investigations Between the Federal Enforcement Agencies and State Attorneys General
The upside is shared cost, a unified front in negotiations, and no conflicting demands on the target. The downside is time. Every major decision requires consultation among participating states, and reaching consensus among dozens of sovereign offices with different priorities is inherently slow. Multi-state investigations routinely take two to four years, and the largest ones run much longer. Confidentiality obligations require all participating agencies to protect information from improper disclosure throughout the process.3Federal Trade Commission. Protocol for Coordination in Merger Investigations Between the Federal Enforcement Agencies and State Attorneys General
How the Investigation Ends and What That Adds to the Clock
If investigators find insufficient evidence, the AG’s office closes the case. The target may or may not be formally notified, and no public action is taken. Case closure does not add time to the investigation itself; it simply ends it.
The most common resolution is a negotiated settlement, often formalized as an Assurance of Voluntary Compliance or a consent judgment filed with a court. In these agreements, the target typically does not admit to breaking any law but agrees to change specific business practices, pay civil penalties, and provide restitution to affected consumers. Negotiating a settlement generally happens toward the end of the investigation and can itself take several months, longer in multi-state matters where each participating office must sign off.
When negotiations break down or the alleged violations are severe, the AG’s office files a lawsuit. Litigation moves the dispute into court and can add one to three years beyond the investigation phase, depending on the complexity of the case and the court’s docket. In some cases, the AG may seek emergency relief such as a temporary restraining order or preliminary injunction before filing a full lawsuit, typically when consumers face ongoing harm that would be difficult to undo later.
What Targets and Complainants Can Expect During the Wait
AG investigations are generally not public while active. The office typically will not confirm or deny that an investigation exists, and investigative files are usually exempt from public records requests until the matter is resolved. Information tends to become public only when the AG’s office files a lawsuit or announces a settlement. Some states treat certain investigative records as confidential even after resolution; others release them once the case is closed.
If you receive a CID, the single most important step is to contact an attorney immediately, ideally one experienced in government investigations. A CID is legally enforceable, and failing to comply can result in a court order compelling production or sanctions. Federal CIDs must describe the conduct under investigation, identify the relevant law allegedly violated, and give a reasonable return date for document production. If the demand calls for oral testimony, you have the right to be accompanied by an attorney, and the testimony date cannot be fewer than seven days after you receive the demand except in exceptional circumstances.1Office of the Law Revision Counsel. 31 USC 3733 – Civil Investigative Demands State CID procedures vary but generally include similar protections. If the demand is overly broad or seeks privileged information, your attorney can negotiate to narrow the scope. When negotiation fails, you can file a petition to modify or quash the CID; at the federal level, that petition typically must be filed within 20 days of service. Aggressive resistance tends to prolong the investigation and can sour the relationship with the AG’s office, which affects settlement negotiations later.
If you filed a complaint, expect limited communication. Investigators generally cannot share details about an ongoing inquiry, and you probably will not be told whether your specific complaint led to action. Filing a complaint does not guarantee an investigation follows. AG offices receive far more complaints than they can individually pursue, and most are resolved through informal mediation or not resolved at all. When complaints do drive a formal investigation, it is usually because many people reported the same problem. If the case results in a settlement that includes restitution, the office typically announces the outcome publicly and provides instructions for affected consumers to file claims. That claims process can take months after the settlement is finalized, so patience is necessary even after a resolution is reached. In the meantime, preserve your own records: receipts, contracts, correspondence, and screenshots documenting your experience with the company.