Just want confirmation I can do this:

My 90 day report is due tomorrow (I believe I can report up to 7 days afterwards).

My visa/extension of stay renewal is due on June 21st.

The money has been in the bank three months from tomorrow.

I am pretty sure I could go to immigration on Wedneasday to do both the report and the renewal but can one of the experts on here please confirm for me.

Thanks in anticipation.

Yes, you can extend up to 30 days before your permission expires.

Always a good idea to do it early.