The independent Merrill Lynch Business Banking Review judged Rabobank to still be the industry leader.

Rabobank general manager Rural Australia, Peter Knoblanche, says the bank's consistent ranking as best agribusiness bank over the past five years reflected the bank's specialist focus on, and commitment to, the Australian agribusiness sector.

"Food and agribusiness is at Rabobank’s heart," Mr Knoblanche said.

"It is our speciality and expertise and this is reflected in the service and support we provide to our clients."

Rabobank leads the world in food and finance banking and is one of Australia's largest rural lenders, being a major provider of corporate financial services to food and agribusiness sectors.

Internationally, the bank has more than 110 years experience.

The review showed Rabobank clients had the highest level of satisfaction with their banking relationship.

In the area of service, the review found Rabobank rated best in class across all measures.

"Rabo ranks best on relationship management and the level of contact is best in class with Rabo setting the bar high on (amount of client) contact," the report states.

"Satisfaction is also well above its peers."

The bank also outperformed in the advice area, including provision of access to specialists, banker expertise, understanding of customer business and sound banking advice.

The latest Merrill Lynch review showed Rabobank ranked "highest across all product perception measures", with the bank also improving its score around product range since the introduction of its online savings and investment service, RaboPlus.

Rating banks on the quality of their response and flexibility provided to clients, the report found Rabobank ranked as "best in class on each aspect of this measure", including its ability to offer flexibility and provide a quick response.