Hahahaaa....
Fatema, as such, in INDIA, various people are running various businesses (legal and illegal).., they never get register and still earn lacs and lacs....
So, registeration is not that compulsary.. But thats not advisable too... Because :
1. The risk factor, being unregistered and carrying on such business, is highest..,... As the amount deposited in bank and the same is withdrawn too.., Moreover, the amount is in "LAKHS" (as u mentioned).....
2. The advantage, as being registered CHARITABLE TRUST, are maximum and safest....
So, its highly advisable to register and fill regular forms... Othervise, once IT authorities come to know about such act, god help them then.....
And seriously, they should get register, they are as such not going to pay any tax (in absence of any additinal income)..............
They should resgister as CHARITABLE TRUST only..