A coil component includes a main substrate; a first coil pattern disposed on a first surface of the main substrate; a first insulating layer disposed on one surface of the first coil pattern; a third coil pattern disposed on one surface of the first insulating layer and electrically connected to the first coil pattern; a second coil pattern disposed on a second surface of the main substrate opposing the first surface; a second insulating layer disposed on one surface of the second coil pattern; a fourth coil pattern disposed on one surface of the second insulating layer and electrically connected to the second coil pattern; and a magnetic body in which the first to fourth coil patterns are embedded, and a board having the same.