Information for consumers will be posted at equifaxbreachsettlement.com, a website set up by the group that will handle claims. The site will begin accepting claims as soon as Tuesday, according to Amy E. Keller, one of the lead lawyers representing consumers in the settlement. Those who already signed up for identity theft protection will be eligible for reimbursement.

[Find out what the Equifax settlement means for you with our guide here.]

The breach not only exposed private information but also put a spotlight on the loosely regulated role credit bureaus play in the day-to-day lives of Americans. Equifax makes money by selling its vast trove of information to auto loan, mortgage and credit card issuers. Consumers can exercise some control over how their files are used — for example, by freezing them to prevent new credit lines from being opened — but they cannot choose to have the bureaus stop collecting their information.

Law enforcement officials have never publicly identified who was behind the hack. Although the thieves did not steal Equifax’s crown jewels, its credit files, they used a flaw that was left unfixed to gain access to dozens of databases. According to a government report, the attackers siphoned off information for about 76 days until Equifax discovered the intrusion in late July 2017. The company waited more than a month to disclose the breach.

As bad as the loss of so much sensitive information was, the company’s bungled response also infuriated consumers. Equifax created an information website that barely functioned. It struggled to keep up with the deluge of phone calls and messages from worried consumers. At one point, it even accidentally pointed those seeking information on the breach toward a fake website.

The turmoil led to the ouster of Equifax’s chief executive, Richard F. Smith, and the company’s chief information officer and chief security officer. Last year, Equifax named Mark W. Begor, an outsider who had worked in private equity, as its new chief executive.

Equifax, based in Atlanta, has been negotiating for months to finalize the settlement and set aside $690 million last quarter to cover the anticipated costs. “We have been committed to resolving this issue for consumers and have the financial capacity to manage the settlement,” Mr. Begor said in a statement.