Tributes flow for business coach and motivational speaker Kerwin Rae

Tributes are flowing for prominent Australian motivational speaker Kerwin Rae who is being remembered as a "mentor to many".

Rae's family announced his death with "hurting hearts" and an "unimaginable sense of loss" in a statement on social media.

The Byron Bay-based business coach and entrepreneur toured Australia and amassed millions of followers on social media through his advice on success, goals, relationships and communication.

"Kerwin was a force of nature, there are countless stories to be told and so many words that could describe the epic human he was, but right now we are too overwhelmed to express them," the statement said.

"To everyone who had the privilege of knowing him - whether as a friend, mate, mentor, or family member - please keep this extraordinary soul in your thoughts and hearts."

Rae's supporters have been asked to keep his family and friends in their thoughts.

"Kerwin would always light a candle and say a prayer for someone who passed," the statement said. 

"If you'd like to honour him in the same way, please light a candle for Kerwin today, say a prayer for his soul, for his sons Noah and Jonah, for his family and friends who will miss his physical presence, but carry his memory in their hearts forever.

"We kindly ask for privacy as we begin to grieve and find a way forward, with plans to celebrate the incredible father, brother, son, friend, and mentor that he was to so many."

"Rest in eternal peace, dear Kerwin."