yes, fees is refunded ,withdrawal option is available but only till the announcement of Round 6. After that , you can’t withdraw your seat.

On withdrawal of your seat , a processing charge of Rs 1500 is deducted and you will get the remaining amount refunded. If You lose your allotted seat andthen u are out of the system of JoSAA.

these moneys are just like security…so that any seat may not remain vacant..