London set Seven Bedford Row has guaranteed a fixed payment for its pupils, becoming one of the first chambers to fulfil Bar Council principles.
Last November the council accepted recommendations from a special committee that barristers should give payments to a fund to help pay for the students and pupils training.
Two years ago Maitland Chambers started guaranteeing pupils earnings of 100,000 for their first three years.
The Bar Council previously rejected proposals for a levy on barristers earnings to pay for trainee barristers.
Seven Bedford Row has promised pupils 10,000 to cover the cost of its BVC and has guaranteed an income of at least 10,000 for their second six months of pupillage.