The Office of State Revenue (OSR) is 1 of 2 offices which comprise the NSW Treasury.
OSR administers State taxation, collects revenue, outstanding fines and penalties, develops policy and implements legislation relating to State taxation for and on behalf of the people of NSW.
New South Wales (NSW) is fully integrated into the Australian and global economy and has the powers to collect its own revenue, in fact enhancing its own competitiveness. No reason why the same powers would not work for Wales either.