The invention provides an inductance element, wherein a bottom part of a magnetic core is configured with a concave part of a terminal plate. In the inductance element, the decrease of the inductance of the concave part can be suppressed. A coil body (20) is embedded in the magnetic core (10), namely a collection body of the magnetic powder. A bottom surface of the magnetic core (10) is provided with a concave part (15,15) of the terminal plate (25,25) extending from the coil body (20), and the step difference between the surface of the terminal plate (25,25) and the bottom surface of the magnetic core (10). The density of the magnetic powder of the magnetic core (10) in an area between the concave part (15) and the coil body (20), thereby the magnetic flow of the area can be improved. Therefore the inductance decrease aused by the concave part (15) can be suppressed.