Amazon Web Services is working to fix a global billing error that showed some customers millions or billions of dollars in estimated cloud charges they had not incurred. AWS said the displayed figures did not reflect customers’ actual usage or charges and that no action was required.
The problem began late Thursday and affected estimated cost and usage data shown in the AWS Billing and Cost Management Console. Customers also received automated budget alerts based on the incorrect figures.
Screenshots shared online showed estimates ranging from several million dollars to hundreds of billions. One customer saw a monthly estimate approaching $2.5 billion, while others reported estimates reaching into the trillions.
Rollback Failed to Resolve the Error
AWS acknowledged the problem through its official Service Health Dashboard, initially saying it was investigating inaccurate estimated billing data in Cost Explorer and other billing tools.
The company later said rolling back a recent change had not resolved the issue. AWS paused estimated billing computations while it investigated other ways to restore the last accurate cost data.
AWS traced the problem to a unit-pricing issue within its estimated billing computation subsystem. The error affected displayed estimates rather than the underlying records used to calculate final charges.
The incident also affected the Cost and Usage Report, a tool businesses use to track detailed cloud spending. That meant finance and IT teams could not rely on their normal AWS cost-management dashboards while the inaccurate estimates remained visible.
Customers Told No Payment Is Required
Amazon said customers would not be charged according to the inflated estimates. The company began recomputing billing data and warned that restoring accurate figures could take several hours.
It remains unclear whether any customer accounts were automatically restricted after the false estimates triggered spending limits or budget alerts. Amazon did not say whether accounts had been suspended or paused because of the problem.
AWS provides cloud computing infrastructure to startups, government agencies and some of the world’s largest companies. Even when actual charges are unaffected, an error in its billing systems can cause disruption because businesses rely on cost estimates to control spending and detect unauthorized activity.
The incident shows how automated cloud billing alerts can create immediate alarm when incorrect data enters the system. AWS customers were advised to monitor the status dashboard and wait for the company to restore accurate estimates rather than changing services or making payments based on the displayed amounts.
Featured image credits: Wikimedia Commons
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