Proactive return of write credits in a memory system

A memory system having memory components and a processing device to receive, from a host system, write commands to store data in the memory components, store the write commands in a buffer, and execute at least a portion of the write commands. For example, this write buffer capacity can be represented by write credit values on the host and the subsystem. The processing device determines an amount of available capacity of the buffer that becomes available after execution of at least the portion of the write commands, and signals the host system to receive information identifying the amount of available capacity, without a pending information request received from the host system.