The present disclosure involves systems and computer implemented methods for implementing a resource allocation and adjusting resource usage and spending based on information received from a plurality of network-connected devices. One example method includes identifying a new connected device replacing an existing device associated with a resource allocation, the resource allocation defining an expected resource usage for a plurality of devices (including the existing device), obtaining historical resource usage information associated with the existing device, identifying the existing device's operational parameters, and determining an expected resource usage for the new connected device after replacement. A change in the expected resource usage in the resource allocation is calculated based on the obtained historical resource usage information associated with the existing device and the expected resource usage amount for the new connected device. The master resource allocation is then updated based on the calculated change.