An AWS billing bug sent users estimated charges of up to $2.5 trillion

https://media.thenextweb.com/2026/07/aws-billing-bug-billion-dollar-estimates.avif

TL;DR

An AWS billing bug sent users estimated bills in the billions and trillions. Amazon confirmed it was a unit pricing error and is recomputing all estimates.

AWS users woke up Friday to find estimated billing emails showing charges ranging from hundreds of millions to $2.5 trillion. A unit pricing error in the AWS Billing Console’s estimated billing computation subsystem was the cause, Amazon confirmed. One Reddit user whose charges totalled $0.19 last month received an estimated bill of nearly $2.5 billion. Others reported estimated monthly charges between $126,000 and $2.5 trillion.

The displayed billing estimates do not reflect actual usage and charges,” AWS said. The company identified the root cause within 90 minutes, describing it as “an issue with unit pricing within the estimated billing computation subsystem.” AWS paused estimated bill updates so the inflated figures would not increase further, and said it has begun...

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