An improved line cutter for fishing rods is provided, comprising a reel seat having a base, wherein the base includes a trigger extending from the base. A slot is formed into the trigger, wherein the slot is adapted to accept a portion of fishing line. A blade with a cutting edge is positioned within the slot, and the cutting edge is exposed to cut the fishing line when the fishing line is pressed against the blade. An alternative design is also provided wherein the trigger is removable from the reel seat base. In the removable trigger, the entire trigger and blade assembly may be replaced, or a blade pocket inside the trigger permits retention and replacement of the blade alone.