A method for producing a single-use capsule (1) for extraction beverages comprises the steps of: positioning a flat piece (8) of filter paper over a cup-shaped rigid body (2); joining the flat piece (8) of filter paper along at least the rim (7) of the rigid body (2); forming the piece (8) of filter paper towards the interior of the rigid body (2) and by means of plastic deformation of the piece (8) of filter paper so as to define a containment chamber (5); filling of the containment chamber (5) with a dose (D) of product; closing of the chamber (5) and of the external rigid body (2) with a sheet lid (6). This invention also relates to a machine (100) which implements said method.