You need to provide all of your income details to your tax agent, Do not rely on them having the information from the tax office.
The ATO Prefill Report does not always include all of your income details. Make sure you bring along all of your group certificates and details of bank interest.
If you work for different employers during the year it is a good idea to keep a
record of each employer’s name and your periods of employment.
With regard to bank interest if you should close a bank account during the financial year the interest details may not appear on the tax office report. It is always a good idea to obtain a print out of interest earned for the year from your bank or financial institution.