Hallo!

Könnte mir vielleicht jemand von euch bei der Übersetzung von folgendem Absatz helfen?

The Australian Taxation Office is the Australian Government's principal revenue collectin agency and is part of the Trasury Portfolio.
Our role is to manage and shape tax, excise and superannuation systems that fund services for Australians. We are the second largest payer of benefits and play an important role in building a better Australia by giving effect to social and economic policy.

Our responsibilities encompass managing and shaping the administrative systems that support the tax system, collecting revenue (excluding customs duty) and administering both regulatory and expenditure programs, as well as our large and complex organisation.

was mir nicht ganz klar ist sind vor allem folgende Stellen:

... is part of the Treasury Portfolio ...
... to manage and shape tax, excise and superannuation systems ...

Falls jemand von euch die Zeit und Muse hat mir bei der genauen Übersetzung zu helfen, wäre das spitze!

vielen lieben dank