Gstr1 b2b or b2c

arsh khan (139 Points)

10 September 2021  
Dear All,
i am a contractor in a Govt Deptt. registered in gst. The name of the department is Irrigation department.
i am supplying material and labour services to the department on contract basis. Department makes me the payment along with gst i.e., 12 or 5 % according to the work which i pay in my gstr 3b as i am also a registered taxpayer in gst. But when i asked for the gstin of the department to file in gstr1 as the sale falls in b2b according to me, the department denied to give the gstin and told me to file the return without gstin.
My concern is that how can i input the sale in b2c when the department is a registered entity. Can this type of job work be considered as b2c? please explain 🙏