A cutter clip and methods for installing a gutter cover onto a gutter system are disclosed. The gutter clip includes a mouth portion sized to provide an interference fit between the gutter cover and the mouth portion of the clip which stationarily secures the gutter cover to the gutter clip. The gutter clip is further provided with a mounting portion that fastens to the lip of a gutter. Once assembled, the gutter clip of the present invention provides minimum horizontal and vertical tolerances between the gutter and the gutter cover, such that water may flow freely into the gutter channel, but does not permit debris to be lodged therein.