While high-speed maglev infrastructure is relatively expensive to build, maglev trains are less expensive to operate and maintain than traditional high-speed trains or planes. At higher speeds, most of the power needed is used to overcome air drag.

Maglev (magnetic levitation) trains are a subject of intense economic debate because while they offer incredible operational efficiency, their initial capital expenditure is astronomical. As of 2026, the primary "cost-effective" argument for maglev is based on long-term maintenance; because the trains do not touch the tracks, there is virtually no mechanical wear and tear on the wheels or the rails, leading to significantly lower upkeep costs compared to traditional high-speed rail. However, the cost to build the specialized, elevated "guideways" is often two to three times more expensive per mile than standard steel-on-wheel tracks. For a maglev project to be truly cost-effective, it requires extremely high passenger volumes over relatively short, high-traffic corridors—such as the Chuo Shinkansen in Japan—where the speed advantage can effectively compete with short-haul aviation. Without massive government subsidies and guaranteed high ridership, the "break-even" point for maglev technology can remain decades away, making it a high-risk, high-reward investment for modern infrastructure planners.