It shows that a student is financially secure during his education period outside India removing any doubts about his eligibility for the visa.
I will recommend you to refer to the blog/article, https://lpcservices.in/ca-certificate-visa-format/ - Complete Guide on CA Report
You can find good templates/formats including original samples.
https://lpcservices.in/ca-certificate-visa-format/ - Complete Guide on CA Report
They will also offer property evaluation services too.
It is always recommendatory to have CA Report in hand. This will have a clear picture of financial status in a summarised way. This will lead to fewer queries to the reader/observer. It hardly costs nothing besides all other expenses. I personally recommend you to refer to the blog/article...
Proof of annual income & liquid assets is always recommended to attach with the CA report. To know more about it, I will recommend you to refer to the blog/article, https://lpcservices.in/ca-certificate-visa-format/ - Complete Guide on CA Report