One minor improvement need in TAX Summary report

Manager will not support what you want yet. The way to handle multi-component taxes is with a custom tax code. See this guide:

Normally, though, all components go to the same Tax payable account. It is possible, however, to define separate liability accounts for the individual components to keep separate totals of how much to pay on each tax. The problem is that the tax reports do not support component-by-component reporting.