During the reign of his elder brother Swargadeo Siva Singha, he held the post of Charing Raja or the heir apparent to the throne.

[2] Accordingly, after the death of Swargadeo Siba Singha, Chengmung Burhagohain of Pukhuriparia clan along with some other nobles decided to install Charing Raja as the king of Ahom kingdom.

The Kalugayan Borpatrogohain, the Dihingia Borgohain and the Dihingia Naobaicha Phukan took up the cause of Tipam Raja, and assembled the attendants and servitors employed in the interior of the royal household in one place, and made up their minds to install the Tipam Raja as king.

He then armed his adherents with swords, shields, spears, arrows and bows, and asking them to remain ready for action he himself waited in full preparedness.

Chengmung Burhagohain and Rupchandra Borbarua said to Tipam Raja: "We have brothers and sons of the deceased king entitled to sit on the throne.

"Just at that time Laidhan, who was a Changmai-ligira or an attendant of the royal cooked, gave the Burhagohain a sword which he pointed at the miscreants and they dispersed.

There, one Naga Ligira, an attendant belonging to the Dihingia family, having placed himself at the head of forty shields men of the Lukhurasun clan, confronted the royalists on the way.

Just as a person does not feel the heat when sitting below a huge tree, so under the shelter of your elder brother’s government you are tainted by the merits or demerits of the subjects.

"After saying so the Burhagohain bathed the body of the deceased king and ascended the royal chamber for laying on the winding sheet.

In addition to the above punishments the following were also chained and imprisoned in the elephant-stall, the Dhekial Barua, and his son the Lari Gohain, the Tipamia Phukan and the attendants Birah and Naga, and a few other shieldsmen.

In the month of Phagun of Hindu-calendar (February–March), the Sraddha ceremony[11] of the deceased king was performed to which all the religious preachers were invited.

The Tipamia Phukan, the Dhekial Barua, his son Naga, and a few other miscreants had their ears and noses clipped and deported to Teji.

[12] It was customary for the tributary rulers under Ahom rule, to offer their submission with gifts and presents to the new king, during or after the coronation ceremony.

One of such tributary kingdoms was Rani, a place in southern part of Kamrup District, mostly inhabited by Karbis and Garos.

[14] On the occasion of the accession of Pramatta Singha, the ruler of Rani sent his envoy Rup offering his submissions and greetings to the new king.

The Burhagohain then said: "Vidyanivas, ask the Rani ambassador whether at the time of his departure from his country, the subjects of the Swargadeo living in plains and hills were in the enjoyment of peace and plenty.

"On being thus interrogated by Vidyanivas the Rani ambassador said: The Burhagohain again added: "It is our wish that the subjects of the Swargadeo living in plains and hills should pass their days in peace and happiness.

"The Burhagohain then replied: "Vidyanivas, tell the ambassador that the prayer of the wild monkeys even was granted by Lord Ramachandra as it was made with proper reverence and love.

He constructed the famous Rang Ghar, an amphitheater made of bricks and had two roofs, for the purpose of animal fights and other amusements during the festivals like Bihu.

Even though his father Swargadeo Rudra Singha constructed an amphitheater during his reign, it was made of wood and bamboo.

In 1754 CE Swargadeo Pramatta Singha initiated a fresh settlement operation in Kamrup and Lower Assam.

[26][27] Maybe it was Swargadeo Rajeswar Singha who had witnessed the Bulbul birds fighting in the temple premises, and the tradition of Hajo’s famous Bulbul birds fighting started since then, but since there are several buildings and temples constructed in Hajo during Pramatta Singha's reign, local people might have confused the name of these two kings.