Hi Danielle
There’s companies out there like IBIS (which you might already have) that provide good modelling tools that allow for the modelling of quick and variable scenarios that help a council to demonstrate, analyse, and arrive at new rating structure/s. Of course any modelling starts with its assumptions about equity, distribution of costs, legislative constraints, etc.
And yes, Randwick has used IBIS in the past to look at various modelling scenarios (and we still use the IBIS product now). We also worked with an economist back in 2016 ahead of council mergers to add weight (e.g. principles of taxation) to what our modelling was telling us. There are some good economist firms out there that know local government.
Do you already have a consultant in mind Danielle? (I’d love to know more if so).
Hope this info. is helpful. Feel free to give me a call. 0417 410 662.