Ticket inspectors on Canberra's bus network have issued just two dozen fines since the start of revenue protection measures this year.

Transport Canberra deployed 30 compliance officers from January in an effort to reclaim some of an estimated $1 million in lost revenue.

But data tabled to the Legislative Assembly last month reveals those efforts have clawed back just $3,816.

For the 2016-17 financial year, 16 fines were issued totalling $2,544, while in the 2017-18 year from July to November, eight fines were issued.

That equates to fewer than two fines each month.

Transport Minister Meegan Fitzharris said 53,000 revenue checks had been completed since January.

"Less than 1 per cent of passengers have been found travelling on a concession ticket without proof of their entitlement," she told the Assembly in September.

"The checks are conducted during peak and off-peak times, on rapid and local services, and at interchanges and suburban stops."

Ms Fitzharris said the inspections were undertaken by full-time and part-time transport officers "as part of their routine daily activities".

The need to introduce revenue protection measures was first flagged by the government in 2014.

That effort was followed by an external report from consulting firm MRCagney, which recommended the government conduct a formal revenue program.