The ever popular all-rounder from Weston-super-Mare appeared for the Second XI aged just 16 and made his senior debut in a 40-over Sunday League game at Bath in June 2000.
During his first class career he has played in over 460 games across all formats amassing over 13,000 runs – including 17 centuries – and has taken nearly 550 wickets.
Over the years the 33 year-old has produced many match winning innings in both Championship and One Day cricket and last season became only the second Somerset player ever to top 1000 runs in a One Day season.
Tregs hit his First Class career best of 140 against West Indies A in 2002 and in 2012 he took 50 Championship wickets in the season.
He said: “I am thrilled that Somerset have awarded me a benefit because it is the place where I was born and where I have loved playing my cricket. As a Somerset boy this makes me feel very, very proud.
“One of the highlights of my career has been the back to back centuries I scored in this summer’s Royal London One-Day Cup competition, the second of which was at Lord’s.
“After 15 seasons with Somerset I feel that I am at the peak of my career and look forward to few more years yet playing cricket at my favourite place – the County Ground in Taunton.
“This is a dream come true for me and during the coming year I look forward to meeting Somerset supporters all over the county and will be hoping to crown my benefit season with some silverware.”
Chief Executive Guy Lavender said: “Peter Trego has been a stalwart of the Club for many years and has made an immense contribution to Somerset both on and off the field.
“The General Committee was unanimous in its view that Peter was entirely deserving of a Benefit Year and I am delighted for him. I have no doubt that Somerset Members and supporters will be keen to show their appreciation for his enormous contribution to the Club over the course of his benefit year.”