Charan Singh served as the guru for the Beas Dera for almost four decades, until his death from heart failure in 1990 at the age of 73.

In 1957, Singh placed all Dera assets into a Charitable Trust, the Radha Soami Satsang Beas Society.

As the spiritual head of Radha Soami Satsang Beas, Charan Singh was noted for his succinct and clear explanations of the Sant Mat teachings, a reflection of his legal training and practice.

He had many disciples from foreign countries as well as India, and would often give discourses and hold question-and-answer sessions with them, both at the Beas International guest house, as well as on his frequent overseas tours.

Many of these sessions were published in books and as audio recordings, and offer a comprehensive understanding of the path of Sant Mat.

Charan Singh initiated the launching of a Medical Eye Camp, a network of charitable hospitals, disaster management projects, and free food distribution programmes, which have continued as his legacy.