composition scheme

a registered person, whose aggregate turnover in the preceding financial year did not exceed fifty lakh rupees

yes a dealer can avail composition scheme if it's turnover is less than 75 lakh rupees. he has to submit GST form on portal or if new registration then fill in registration form once option is opt you can not withdraw it from in whole year. if you want to continue it in next year you have to intimate in starting of year.