How much payment can we make into our bank a/c ?

Any amount without limit, but by cheque/DD/NEFT/RTGS etc.

Sir,

One conundrum one friend of mine few months back has received many payments from his parties in other states on his bank a/c and after a month he has got one letter from the income tax department 

Basically I want to know how much amount yearly I should receive from my customers (parties) so I don't have to pay income tax and bank will not send me such letters 

I want to know the limit of amount that one should take into his bank a/c

Department gets reports from bank when total amount of cash deposits to any savings acc exceeds 10 lakhs and for current account more than 50 lakhs total cash transaction

sir,

means one can take transaction amounting rs 10lakhs into his a/c no one will ask anything ?right? 

then what about income tax ?sir,these things are baffling me a lot please suggest me any site or person whom should I contact in person and clear my all doubts 

If you have some basic knowledge, then just type question and enter, you will get different sites, Thanks Google.

But would advise to consult any local CA for better clarification, because most of the time self medication doesn't help, but sometimes harm!

E.G "means one can take transaction amounting rs 10 lakhs into his a/c no one will ask anything ?right? "       You have not rightly understood. Cash deposited in aggregate during year in saving account. BUT again it does't include frequent transactions exceeding 50 thousand.

Well, if you do not do any speculative activity, but genuine business, answerable to all such activity; and pay liable taxes with reporting to concern departments by regularly filling ITR etc.; then you need not worry for any such inquiry. Department is behind money laudering, not harrassing legal activity.

Business transactions should preferably be routed through Banking Channels. Cash Transactions should be kept to a minimum. 

How much minimum it should be? 

Transaction must be under 50k within a day.