An improved gutter flashing is disclosed. The gutter flashing can be installed on a preexisting fascia board of a building, and is compatible with the installation gutter hangers, leaf protection devices, and pre-existing drip edges or gutter flashing. The gutter flashing can be installed without placing additional holes for screws, nails or other securing devices other than the attaching devices that attach the gutter to the fascia board. The gutter flashing comprises a lower spacer portion, a substantially vertical arm with a substantially u-shaped spacing portion to receive the lower angled leg of the preexisting drip edge. Diverter arm rests on top of the roof portion of the preexisting drip edge and extends into approximately the midline of the gutter to divert water away from the structure and into the gutter.