vendor letter format for non applicability of gst

you just have to write in the content the you have not been registered under gst law and you should also mention the reason why you are not registered...for example you are dealing in exclusively on exempted goods or you have turnover below the threshold limit in last financial year.....there is nothing much to write....

yes just make a declaration that u are not liable to register under gst and further give reason as said by AKHILESHJI.

I think you can print or put seal barati good the above said particulars in each invoices.