Nang Kwak is believed to bring money into household. Nang Kwak normally depicted as a young Thai woman in Thai traditional clothes, sitting on her knees with the right hand up, beckoning to bring money in. Thai people like to have Nang Kwak in their home and business stores.

According to the legend, the real name of Nang Kwak was Supawadee. She was the daughter of Sujitbrahma, her father and Sumontha, her mother. She was born in merchant family in Matshikasun City. When she was young, she was blessed to bring wealth to her family by one of her masters. Since then her family was gradually wealthier and wealthier. Later, many people respected her. After she passed away, people cast her statue to worship and ask for their wealth. Nang Kwak is believed to be helpful for shop-owners. Her statues usually are found near cash registers in most Thai restaurants.  A small glass of water is often found in front of her statue as an offering. Some people even wear her small statue pendant as they believe that Nang Kwak brings money luck to them.