Hello,
As per my understanding following are the provisions for supply of services by person registered under composition scheme.
As per 2nd Proviso to Sec 10(1) of CGST Act, A person registered under composition scheme may supply services, subject to the condition that value of such service is up to 10% of Turnover in State / Union Territory in previous Financial Year, or Rs. 5,00,000, whichever is higher. The limit is to be checked state wise.
So basically, this provision is for such composite suppliers, who supply goods as well as services.
But if the supplier only supplies services, he will have to get registered under Sec 10(2A) of CGST Act. He can avail this section only if his aggregate turnover in the previous financial year does not exceed Rs. 50,00,000.
Hope I am able to clarify your doubt.