NIM21024 | Class 2 National Insurance Contributions: Small Earnings Exception: Special Groups: Members of religious orders
From HM Revenue & Customs · National Insurance Manual
Members of religious orders who were self-employed were eligible to claim exception on the ground of small earnings. They normally took vows of poverty and lived as a community and their “earnings” consisted of the value of their maintenance. It was taken in such cases that this was less than the SEE limit.