The company said the move would see Speyside’s smallest distillery expand to meet growing demand for its single malts around the world.
It will invest a seven-figure sum to build two warehouses next to its distillery in Forres and employ a third stillman to work alongside Keith Cruickshank and Mike Ross.
Managing director Michael Urquhart said: “This investment comes on the back of 40% growth in worldwide sales in 2012 and continued strong growth in 2013.
“It’s been a huge success and we know we will need to increase production if we are to meet demand in the future.
“Whisky production is a business that needs vision and long-term planning and this is a sign of the confidence we have in the Benromach brand.”
Benromach was bought by Gordon & MacPhail in 1993 after being closed for 10 years.
It was refurbished and reopened in 1998, launching the world‘s first certified organic whisky eight years later.
Gordon & MacPhail’s whisky supply business was named Wholesaler of the Year in the 2013 Drinks Retailing Awards run by OLN.