Methods, systems, and devices for redundant data bus inversion (DBI) sharing are described. A device may identify a group of channels included in a data bus. The device may determine whether the group of channels satisfies a criterion. Based on the determination, the device may allocate an overhead channel to the group of channels for a set of redundancy operations. Based on the determination, the device may allocate the overhead channel to the group of channels for a set of data bus inversion operations. The device may encode data associated with the group of channels based on the allocation of the overhead channel. The overhead channel may be included in the data bus.