There are various festivals of Karbi tribe. Among the major festivals observed by the Karbis, the most popular ones are `Chojun Puja` or `Swarak Puja`, `Rongker`, `Chokkeroi`, `Hacha-Kekan`, `Chomangkan`, etc. The former four festivals that are Chojun Puja` or `Swarak Puja`, `Rongker`, `Chokkeroi`, `Hacha-Kekan`, are socio-religious in nature and `Chomangkan` is a social one. The spot for `Chojun Puja` or `Swarak Puja` is usually selected near the house of the family willing to perform this puja. The puja is performed for the welfare and prosperity of the family.

Rongker is another popular festival of the Karbi people. It is performed at the beginning of the New Year by propitiating different gods and goddesses for the well being of the entire village. The deities are worshipped by all the elderly male people of the village for seeking their blessings to protect the village from diseases, natural calamities during the year and also for good harvest. Interestingly, the women are not allowed to enter into the worship arena. Further, there is another kind of Rongker performed in a large scale. This type of Rongker which is performed at the beginning of every five years is called `Wofong Rongker`. This Wofong Rongker is performed for the well-being of all the people of the villages that fall within the jurisdiction of a Mauza (which means a revenue administrative region consisting of a number of revenue villages). Each revenue village is represented by the village headman and a number of village elders (male members only) in the performance of the Wofong Rongker. While the Rongker performed for a village is only of one day`s duration, the Wofong Rongker continues for two days.

Sokkerroi festival is observed when the paddy field is ripened to the fullest extent. The ripened paddy is cut and taken to a place specially cleared in the field. After that the paddy is collected. A large number of young men go and collect paddy in bags and carry it to home. There starts a great rejoicing and the young ones dance and celebrate. Sokkerroi literally means the carrying of the paddy from the field. In this festival, one person is selected as the leader who provides the leadership in dancing and singing. He is called Lunse. He is the director of singing and dancing. The next socio-religious is Hacha-Kekan, which is not exactly based on the folk-tales. Hacha-Kekan festival is mainly associated with after harvest rejoicings. Hence, it is assumed that the Hacha-Kekan is secular in its activities and differs substantially from other festivals. It principally differs from Rongker as this festival needs the propitiation of god.

Although, the Karbis perform the funeral ceremony at the time of the cremation of the deceased, they also perform the death ceremony called "Chomangkan" and for offering prayers for the eternal peace of the deceased. This ceremony is basically the most elaborate and expensive socio-religious ceremony of the Karbis which continues for four days and four nights without any pause. The ceremony does not require any formal invitation to the people as all are welcome. In spite of the sad undertone, it is the proud day for the concerned family and they welcome all with great warmth. Everyone carries a symbolical rod with five branches and at the end of each branch; there is a wooden bird, which is called in Karbi language "Vo-rali". The whole rod is called "Jambili Athan". This is the symbolical representation of the tribe and it is also the symbol of clan unity. Thus, these festivals of Karbi tribe reflect their customs and traditions.