On July 17, 2026, some Amazon Web Services customers opened the AWS billing portal and saw estimates ranging from a few million to close to $2.5 billion for usage they said they never incurred. Amazon confirmed the issue, traced it to its billing computation subsystem, and said the figures do not reflect actual usage or charges.
What happened
Screenshots posted on Reddit showed alerts in the hundreds of millions and, in at least one case, close to $2.5 billion for the current month. Amazon first observed inaccurate billing data late on Thursday, and an attempt to roll back a recent change did not resolve the problem.
How Amazon responded
Amazon posted updates on its AWS status page and tied the issue to its billing computation subsystem. The company said the estimates shown in the portal do not correspond to real usage. At the time of writing, Amazon said it expected the issue to last several more hours.
Spokesperson Aisha Johnson referred questions back to the status page and did not answer further questions, including whether any AWS accounts were suspended or paused as a result of the bug.
What customers should do
- The figures shown in the billing portal are estimates, not finalized invoices.
- Amazon has stated these estimates do not correspond to real usage.
- Customers with concerns can monitor the AWS status page for resolution updates.
At the time of publication, Amazon had not said what triggered the change to the billing subsystem or how many customers were affected.
FAQ
What caused the wrong AWS billing estimates?
Amazon tied the issue to its billing computation subsystem and said an attempt to roll back a recent change did not resolve the problem. The company had not publicly identified what triggered the change.
How much did affected customers see on their bills?
Customers reported estimates ranging from a few million to close to $2.5 billion for the current month, with screenshots posted on Reddit showing totals in the hundreds of millions and, in at least one case, near $2.5 billion.
Will AWS customers actually be charged these amounts?
No. Amazon said the figures are estimates generated by the billing portal and do not reflect actual usage or charges, and that they are not finalized invoices.
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