Not charging tax

I am a working girl. Just one month ago I started working into travel agency and according to government regulations we have to charge 1.45 % government service tax on hotels and 4.35% on completed package on the products we sale to the clients so recently have sold a complete package but while making the bill for the package my boss has told me charge only 1.45 % while the real charge is of 4.34% tax so now I wants to know whether it is right or wrong. I am just an employee there and I work for a salary but I want to know wether the salary I get will it be counted as halaal to me or not. Because every employee gets there salary from the profit which the company makes and they do their business in this way. The salary is jaaiz for me or should I leave the job?