Amazon is currently grappling with a substantial technical issue affecting its Amazon Web Services (AWS) billing system, which has presented some customers with wildly inaccurate and inflated bill estimates. On Friday, 17 July 2026, numerous AWS users logged into their accounts only to discover they were supposedly liable for millions, and in some cases, billions of pounds for cloud computing services they had not utilised.
The tech giant confirmed the existence of a bug within its AWS billing portal, acknowledging that it began observing inaccurate billing data late on Thursday. Despite attempts to roll back a recent change related to its billing computation subsystem, Amazon stated that the issue persisted into Friday morning, indicating a more complex problem than initially anticipated.
Screenshots shared by concerned AWS customers on platforms like Reddit illustrate the scale of the error. One customer reportedly saw a projected bill of close to £2.1 billion for their current month's AWS usage, while others experienced similar alerts, with figures ranging from several million to hundreds of millions of pounds. These figures are, thankfully, not reflective of actual usage or charges, a point Amazon has been quick to stress.
For affected businesses and individuals, the initial shock of seeing such astronomical figures would have been considerable. Although Amazon has reassured customers that these estimates are incorrect and do not represent their true liabilities, the incident highlights the critical importance of robust and accurate billing systems, especially for essential cloud infrastructure services.
The company's status page indicated that the resolution process was expected to take several more hours from Friday afternoon, suggesting that the full fix might extend into the weekend. While the immediate financial impact on customers is negated by Amazon's confirmation of the error, the incident serves as a reminder for all businesses relying on cloud services to regularly monitor their usage and billing statements for any discrepancies.