Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may provide information identifying a band combination capability for carrier aggregation during a handover of the UE, wherein the band combination capability identifies a plurality of bands or carriers; and perform the handover based at least in part on the information identifying the band combination capability, wherein at least one first band or carrier, of the plurality of bands or carriers, is used for a source base station of the handover and at least one second band or carrier, of the plurality of bands or carriers, is used for a target base station of the handover. Numerous other aspects are provided.