It depends on your lifestyle sir. You may get a decent 3 bedroom flat in the main city for 9,000 QR, school (international) is a little bit expensive. But you may send them on less expensive ones. (or better negotiate your kids school to your company for scholarship) Food/Petrol/Utilities 5k-6k is enough. As I've said it depends on a persons lifestyle. Qatar is a great country. :)