The Independent Pricing and Regulatory Tribunal's draft report on fares recommends increasing single fares by an average of 5 per cent a year between 2020-2024.

That would see a train ticket between Wollongong and Sydney go up by around 46 cents each year.

Other recommendations include increasing the pool of commuters who can get travel discounts by offering fare relief for those travelling three to four days a week.

Improving the range of off-peak fares is also on the table, as a way to encourage more commuters to look to travelling outside peak times.

This includes extending the off-peak fares to buses and light-rail services, setting it at 30 per cent off the standard fare.

"We are moving away from a 'one size fits all' approach to offering different passes that cater for for regular and occasional users, and those travelling in peak and off-peak times," said IPART acting chair Deborah Cope said late last year.

At present commuter tickets fund around a quarter of the cost of providing public transport, with the remainder funded by the taxpayer.

That equates to around $4900 per household in 2018-19, according to IPART

The public hearing into the draft public transport fares will take place at the IPART offices in Sydney on February 11.

Commuters can also leave feedback on the draft plans via an online survey at the IPART website.