The study of paint deposition processes in electric fields is gaining relevance in various industries, including agriculture, where effective application of coatings can enhance both the durability and efficiency of agricultural equipment. The finite element method (FEM) was chosen to simulate the process of painting in electric fields. During the simulation, the degree of paint deposition on the surface being painted was studied. It was found that the degree of paint deposition is affected by the speed of paint particles moving toward the surface being painted, the volumetric air flow rate in the electric painting unit, and the area of the surface being painted. For the simulation conditions, the area of the surface being painted was assumed to be constant and was 0.1; 0.5; 1.0; 2.0; 3.0; 5.0 m2; the speed of paint particles moving toward the surface being painted varied in the range of 0.5–5.0 m·s−1; the volumetric air flow rate in the electric painting unit was in the range of 0.1–10 m3·s−1. The maximum value of the paint deposition degree in the range of 90–100% was observed for the painted surface area of 5.0 m2, the paint particle movement speed to the painted surface in the range of 0.5–5.0 m·s−1, and the air flow rate in the electric painting unit in the range of 0.1–1.0 m3·s−1. The specified ranges are the most promising for future research of the paint deposition degree during electric painting in the automotive industry and other areas of production.