Rigid package for smoking articles comprising: a bundle of articles; an internal wrapper that encloses the bundle of articles; a rigid external container that accommodates the internal wrapper and that presents an open extremity, said rigid external container comprising two opposite lateral walls, a front wall and a rear wall opposite each other; and a rigid collar that partially projects from the open extremity of the external container, said collar being placed between the internal wrapper and the external container, wrapped around in contact with said internal wrapper, an empty cavity being formed between the collar and the external container, characterized in that: the collar comprises at least a pair of opposing tabs being in direct contact with the respective internal side of the lateral walls of the external container and with the edges of the tabs in contact with the internal side of the rear wall of the external container to distance the internal wrapper wrapped by the collar from the rear wall of the external container and block the internal wrapper in a fixed position in the external container, and in that said collar has a rear wall made from two lateral flaps (54a, 54b) that join along their respective end flaps (58a, 58b) which are folded and joined so that a fin is formed extending perpendicular to the plane defined by the rear wall of the collar, said fin being placed between said pair of opposing tabs and with the edge of the fin contacting the internal side of the rear wall of the external container, to distance the rear wall of the collar from the rear wall of the external container and stiffen the entire package. a bundle of articles; an internal wrapper that encloses the bundle of articles; a rigid external container that accommodates the internal wrapper and that presents an open extremity, said rigid external container comprising two opposite lateral walls, a front wall and a rear wall opposite each other; and a rigid collar that partially projects from the open extremity of the external container, said collar being placed between the internal wrapper and the external container, wrapped around in contact with said internal wrapper, an empty cavity being formed between the collar and the external container, characterized in that: the collar comprises at least a pair of opposing tabs being in direct contact with the respective internal side of the lateral walls of the external container and with the edges of the tabs in contact with the internal side of the rear wall of the external container to distance the internal wrapper wrapped by the collar from the rear wall of the external container and block the internal wrapper in a fixed position in the external container, and in that said collar has a rear wall made from two lateral flaps (54a, 54b) that join along their respective end flaps (58a, 58b) which are folded and joined so that a fin is formed extending perpendicular to the plane defined by the rear wall of the collar, said fin being placed between said pair of opposing tabs and with the edge of the fin contacting the internal side of the rear wall of the external container, to distance the rear wall of the collar from the rear wall of the external container and stiffen the entire package. the collar comprises at least a pair of opposing tabs being in direct contact with the respective internal side of the lateral walls of the external container and with the edges of the tabs in contact with the internal side of the rear wall of the external container to distance the internal wrapper wrapped by the collar from the rear wall of the external container and block the internal wrapper in a fixed position in the external container, and in that said collar has a rear wall made from two lateral flaps (54a, 54b) that join along their respective end flaps (58a, 58b) which are folded and joined so that a fin is formed extending perpendicular to the plane defined by the rear wall of the collar, said fin being placed between said pair of opposing tabs and with the edge of the fin contacting the internal side of the rear wall of the external container, to distance the rear wall of the collar from the rear wall of the external container and stiffen the entire package.