On 6 June 2008 IPART released two discussion papers which consider improvements to the CityRail regulatory framework - the first paper (Determining CityRail’s revenue requirements and how it should be funded) focuses on the total costs associated with providing CityRail services and discusses what portion of these costs should be recovered from passengers through fares, and what portion should be funded by taxpayers through government subsidies. The second paper (Deciding on the structure and level of CityRail fares) focuses on how fares should be structured to encourage efficiency in the use of the CityRail network, equity between different users of CityRail services and promote efficient investment decisions.