Methods and systems for consent based information sharing. One system includes a server including an electronic processor configured to receive a first set of parsed communication data for a first talkgroup and a second set of parsed communication data for a second talkgroup. The electronic processor is configured to determine a topic of interest of the first talkgroup. The electronic processor is configured to identify relevant communication data from the second set of parsed communication data, where the relevant communication data is relevant to the topic of interest. The electronic processor is configured to determine whether the relevant communication data is shareable. The electronic processor is configured to, in response to determining that the relevant communication data is not shareable, request consent from the first talkgroup and the second talkgroup to share the relevant communication data, and, in response to receiving consent, enable sharing of the relevant communication data.