New Hampshire Recording Law Summary:
New Hampshire recording law stipulates that it is a two-party consent state. In New Hampshire, it is a criminal offense to use any device to record communications, whether they’re wire, oral or electronic, without the consent of everyone taking part in the conversation. This means that in New Hampshire you are not legally allowed to record a conversation you are taking part in unless all parties are in agreement. However, the offense is considered a misdemeanor instead of a felony if the perpetrator contributed to the communication in question or received the prior consent of one party to the recording. N.H. Rev. Stat. Ann. § 570-A:2 (2012).
You may not record conversations without the consent of all involved parties.
However, New Hampshire law does make an exception in cases where the person or people communicating are doing so in an environment where they should not be under the expectation of privacy. N.H. Rev. Stat. Ann. § 570-A:1.
N.H. Rev. Stat. Ann. § 570-A:2: The recording of oral or electronic communications between parties who were under a reasonable expectation of privacy without the consent of all involved is a felony offense.