Following offences cannot be compounded :
As per first proviso to section 138(1) of CGST Act, offences cannot be compounded in respect of following persons.
(a) a person who has been allowed to compound once in respect of any of the offences specified in clauses (a) to (f) of sub-section (1) of section 132 and the offences specified in clause (l) which are relatable to offences specified in clauses (a) to (f) of the said sub-section;
(b) a person who has been allowed to compound once in respect of any offence, other than those in clause (a),under this Act or under the provisions of any State Goods and Services Tax Act or the Union Territory Goods and Services Tax Act or the Integrated Goods and Services Tax Act in respect of supplies of value exceeding one crore rupees;
(c) a person who has been accused of committing an offence under this Act which is also an offence under any other law for the time being in force;
(d) a person who has been convicted for an offence under this Act by a court;
(e) a person who has been accused of committing an offence specified in clause (g) or clause (j) or clause (k) of sub-section (1) of section 132; and
(f) any other class of persons or offences as may be prescribed.