The present invention provides a resin composition for coating which is capable of exhibiting an excellent balance between coatability, impact resistance, moldability and chemical resistance, and capable of attaining a good coating appearance, for example, even when a large-size molded product is coated. The resin composition for coating according to the present invention comprises 84.9 to 98.9 parts by mass of the below-mentioned rubber-reinforced vinyl-based resin [A], 1 to 8 parts by mass of a polyester resin [B] and 0.1 to 7.1 parts by mass of a copolymer [C] of ethylene, a (meth)acrylic acid ester and carbon monoxide (with the proviso that a total amount of the components [A], [B] and [C] ([A] +[B] +[C]) is 100 parts by mass): [Rubber-reinforced vinyl-based resin [A]]A rubber-reinforced vinyl-based resin comprising a rubber-reinforced copolymer resin [A1] obtained by polymerizing a vinyl-based monomer [b1] in the presence of a rubber polymer [a], or comprising the rubber-reinforced copolymer resin [A1] obtained by polymerizing the vinyl-based monomer [b1] in the presence of the rubber polymer [a], and a (co)polymer [A2] of a vinyl-based monomer [b2].