The Royal Merit-Making Pavilion is a hall located to the west of the Royal Crematorium. It is the site where His Majesty the King takes his seat to listen to prayers and where he performs merit-making ceremonies, with space for members of the Royal Family, the Privy Council, the Cabinet, military and civilian senior officials, members of parliament, the diplomatic corps, representatives of various religions in Thailand, as well as high-ranking courtiers.

The Royal Merit-Making Pavilion is 44.5 meters wide, 155 meters long, and 22 meters high. The walls inside the Royal Merit-Making Pavilion consist of paintings depicting royally initiated projects in all regions of Thailand.