Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. Now the cut offs are different for All India Counselling and State Counsellings. States like Delhi, Jharkhand, Tamilnadu and Biihar have relatively higher cut offs than States like Meghalaya, Assam, Karnataka, etc. But in general if you are opting for All India Counselling, you will need atleast 550-575 for a seat in a decent College even in mop up round. Under State Counselling, you will need nothing less than 525-550. This again depends on the State you belong to.