In the title compound, C(14)H(15)NO(3)S, the geometry around the S atom of the SO(2) group is distorted tetra-hedral. The meth-oxy- and methyl-substituted aromatic rings are oriented at a dihedral angle of 71.39 (9)°. Inter-molecular N-H⋯O hydrogen bonds form inversion dimers, which stabilize the crystal structure.