Calculation of time limit u/s 147

[sujittalukder]

I have a query on calculation of time limit u/s 147. It states "no action shall be taken u/s 147 after the expiry of four years from the end of the relevant assessment year...."
So, for Previous year 2005-06, the relevant Assessment year is 2006-07. What is the time limit with which action u/s 147 can be taken? Is it Assessment year 2010-11 or 2011-12? If it is 2011-12, then please clarify also.

[camanojgupta]

In this case ending assessment year is not relevant
Four years would end on 31.03.2011
No action can be taken after 31.03.2011 if the case does not fall in the proviso to section 147
CA MANOJ GUPTA
JODHPUR
09828510543

[sujittalukder]

Thanks for the reply.

[sujittalukder]

Can you please tell what is last time period upto which reassessment u/s 147 can be opened under various provisions of IT Act?