Does IBKR Australia support Institutional Offers where applicable?

No. IBKR does not offer the ability to participate directly in a company's dividend reinvestment program.

IBKR does offer a separate DRIP plan which provides for the reinvestment of cash dividends for eligible stocks. See: How do I manage my Stock Dividend Reinvestment Program (DRIP) election?…

IBKR offers the same commission structures to both Retail and Institutional clients, as well as to Professional and Non-Professional clients. 

Please Note…

CHANGE ACCOUNT TYPE

It is possible to short sell in a Cash account at IBKR Australia only if it is a Trading Account…

No. IBKR Australia does not support individual HIN registration. Instead, IBA Nominees holds all client positions on an omnibus basis with BNP or the applicable sub-custodian. Accordingly, you will not receive CHESS statement and information directly from the registry, but you are still entitled to dividends and to participate in corporate actions that the company offers…