The most accurate answer would probably be 'depends'. If this huge client of yours is in anyway even remotely related to the government, then there is an extrem

The most accurate answer would probably be 'depends'. If this huge client of yours is in anyway even remotely related to the government, then there is an extremely high possibility of having to deal with corruption. OTOH, there are a lot of companies that meticulously try to keep their hands clean in all dealings. So, the best thing to do would be to inquire around about your particular client. Disclosure: I'm Indian and have lived in India for a majority of my life.