I thought that the issue of the Indian Income Tax authorities wanting to tax banks for the services they offer (they deprive the government of revenues by doing so!) had gone away. It has not. See this and this.
This is unreasonable. Holistic thinking missing. Tax claim on a revenue foregone by a commercial enterprise is wrong in principle. That is a business decision to offer a package. A larger deposit facilitates creation of bank assets, economic activity and hence, tax revenues.
Government revenue has to be a by-product of economic activity. If it becomes the main product, then economic activity will be a bygone product.