# Billing software error sends billion-dollar AWS estimates

- URL: https://talkfuse.com/story/billing-software-error-sends-billion-dollar-aws-estimates/
- Published: 2026-07-17T16:37:39+00:00
- Updated: 2026-07-22T02:15:30+00:00
- Original publisher: The Register
- Original article: https://www.theregister.com/off-prem/2026/07/17/billing-software-error-sends-billion-dollar-aws-estimates/5274521
- Topics: Software, Technology

## Key points

- AWS billing tool briefly showed estimates in the billions, even trillions
- Amazon said actual charges were unaffected, only displayed estimates
- Fix rolled out with corrected figures expected by Saturday noon Pacific

## Summary

AWS suffered a billing system glitch on 17 July 2026 that caused its Cost Explorer tool to display wildly inflated estimated bills, with some customers seeing figures in the billions or even trillions of dollars. Amazon said the errors were confined to displayed estimates rather than actual charges, and urged affected customers not to panic while it investigated and fixed the underlying fault.

The issue, first flagged on the AWS Health Dashboard at 1:33am Pacific time, was traced within about 90 minutes to a fault in "unit pricing within the estimated billing computation subsystem." AWS paused further updates to the inflated figures, then said it had identified and mitigated the root cause, with corrected numbers expected to be backfilled by noon Pacific on Saturday 18 July. Users on Reddit and Hacker News reported extreme examples, including one customer whose usual $0.19 monthly bill was estimated at nearly $2.5 billion, with others quoted figures as high as $2.5 trillion.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.