I don't know the negative aspects of it. Because all TEPs would mention, "as per the allegations levelled by his own daughter".
In my case, my ex-Father-out-law was slapped a penalty of Rs. 2.21 lakhs. Here is the news item w.r.t. the same
https://khabar.ibnlive.in.com/news/49257/1
Also, in few other cases I know, people have been slapped with recovery notice ranging from Rs. 2 Lakhs to Rs. 80 Lakhs. And in few other cases, I know the out-laws facing heat from Income Tax Department has settled matter for much less than they would otherwise had.
Secondly, it is a case which would be made by Income Tax Department against the out-laws, so you are merely a complainant and nothing more than that. You have no role thereafter, so you don't expand your energies, while they go in defense mode.
I would be keen to hear about the negatives unless you yourself are horder of black money etc.
I have seen TEPs/ Complaints to Sales Tax etc working in favor of accused more than any other thing.
Regards,
Shonee Kapoor
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If you don't fight for what you want, don't cry for what you LOST.