Can we maintain different financial year ending and tax calculation year in Baan IV c4 India localization ? For example, financial year ending has 28/02 and tax calculation year end has 30/3 ?

In session tfgld0106s000 Maintain End Dates by Fiscal Year.
You can try with it.

whats the impact of using different year ends for fiscal year ending and tax year end ?
How the functionality works with different years?