Adur and Worthing CAB, Arun and Chichester CAB and Central Sussex CAB are hoping to form a single West Sussex CAB.
It is thought the amalgamation will put them in a stronger financial position and help them provide a better service.
Margaret Bamford, chairman of trustees at Adur and Worthing CAB, said: “Strategically, a merger would allow us to bid for larger contracts.
“This would be crucial for our funding in the coming years.
“Having a single West Sussex bureau would also enable us to access technology in a way we are unable to do at the moment.
“Altogether it would mean a better service for everybody in West Sussex.”
CAB advice centres include Lancing, Shoreham, Worthing, and Littlehampton.