After completion of 3 months there is fine of QAR 10 per day...Make sure sponsor is mother written on it..This is very important..If a onarrival or visit visa is issued..then fine is QAR 200 per day....

So if it is not a visit visa..then you just need to pay 300 per month of delay (after 3 monthys)..but donot worry..even 12 month delay is ok