This paper presents a technique for improving the performance of inductor at high-frequency through mitigating the effects caused by the parasitic capacitance. This technique adds a small capacitor to the coupled windings of the inductor to cancel the parasitic capacitance of the inductor. This technique can also be used to improve the coupled windings with leakage inductance. The relationship between the parasitic capacitance, magnetic coupling coefficient, and the small capacitor is introduced. The method to determine the value of the small capacitor is described in this paper. The results of applying this technique with different value of magnetic coupling coefficient k show that an improvement of the inductor impedance by around 20-45 dB depending on k. MATLAB software is used to verify the technique.