Hello,

Articleship is a 3-year practical training phase that allows students to work on assignments.
If you have done tax and audit assignments in the firm then it will be counted as articleship.
But the question is have you registered before for articleship?  You must have registered in both groups of IPCC and ICAI. Complete 35 hours  of orientation program and hundred words of information technology training (ITT) at any ICAI branch before commencement of articleship and then only it will be counted.

I hope this helps.