China sodium-ion and solid-state EV batteries are now at the center of the country’s next battery push. China has chosen these two chemistries as priority technologies for the next stage of electric vehicle growth. As a result, new tax rules will lower costs for producers and encourage faster investment. Moreover, the policy shows that China wants to lead not only today’s battery market, but also the one that shapes EVs through the rest of 2026 and beyond.
China sodium-ion and solid-state EV batteries get tax support
China’s Ministry of Finance, the General Administration of Customs, and the State Taxation Administration announced a major policy shift. Starting on September 1, 2026, Lithium-ion batteries will face a 2% consumption tax. Then, one year later, that rate will rise to 4%. For more than a decade, lithium-ion batteries had enjoyed an exemption that helped Chinese battery makers expand at scale.
Now, the government is sending a clear signal. It sees lithium-ion as a mature battery category. Therefore, it no longer needs the same level of support. In contrast, sodium-ion and solid-state batteries will receive tax-exempt status through the end of 2028. This change matters because both technologies had been subject to a 4% consumption tax since 2015.
Consequently, China is lowering the cost of building and selling next-generation batteries. That approach mirrors the country’s earlier industrial strategy in solar, EVs, and other advanced technologies. Instead of relying only on direct subsidies, China often adjusts costs through tax policy. In turn, manufacturers gain a strong reason to move capital and research into the chosen field.
Why China sodium-ion and solid-state EV batteries matter
Sodium-ion and solid-state batteries each offer strategic value. First, sodium-ion batteries support cost control and supply diversification. They reduce dependence on lithium-focused supply chains. In addition, the article notes that sodium-ion batteries are now reaching cost and energy density parity with LFP cells. That is an important milestone for broader commercial adoption.
Second, solid-state batteries promise a major step forward in EV battery design. They replace liquid electrolytes with solid materials. As a result, many companies see them as a key technology for future Electric Vehicles. China recently developed the first global solid-state battery standard. Therefore, it is trying to shape both production and industry rules at the same time.
This combination gives China a strong advantage. It is not only scaling factories. It is also helping define performance expectations for the market. When a country leads in manufacturing and standards, it often gains long-term influence across the full supply chain.
China sodium-ion and solid-state EV batteries fit a proven strategy
China has used this playbook before. Around 2015, it backed lithium-ion batteries as a strategic industry. A decade later, Chinese firms dominate much of the global battery supply chain, from raw materials to components and final cells. Companies such as CATL and BYD now stand among the most important battery makers in the world.
That history helps explain the latest move. China appears to be steering the market toward the next battery era before competitors can establish a lead. By making lithium-ion slightly more expensive and next-generation chemistries tax-free, policymakers are reshaping the economics of investment.
Furthermore, this shift may accelerate pilot programs and factory planning. CATL, BYD, and other companies are preparing pilot solid-state manufacturing lines. At the same time, many startups in China are moving directly into sodium-ion or solid-state development. They want to compete where future growth looks strongest.
How China sodium-ion and solid-state EV batteries could shape the EV market
The policy could influence the EV market in several ways. First, it may speed up commercial deployment. A tax exemption through 2028 gives companies a multi-year window to scale production with lower costs. That certainty can improve investment planning. It can also help suppliers and automakers align product roadmaps.
Second, the move could broaden battery choices for vehicle makers. Sodium-ion batteries are attracting attention for affordable mobility and energy storage. Meanwhile, solid-state batteries remain a major focus for premium EV development. Together, they give China two paths to strengthen its battery leadership.
Third, the timing matters. The new lithium-ion tax starts in 2026, while support for sodium-ion and solid-state runs through the end of 2028. That creates a clear transition period. During these years, manufacturers can build capacity, improve yields, and prepare for wider market launches.
What to watch next for China sodium-ion and solid-state EV batteries
Investors, automakers, and battery buyers should watch three things. First, track how quickly pilot solid-state lines move toward larger production. Second, watch whether sodium-ion deployment expands across EVs and energy storage. Third, follow how Chinese standards influence global battery design and certification.
Overall, China is making an early and coordinated bet on next-generation battery chemistries. The new tax policy supports sodium-ion and solid-state batteries with a direct cost advantage. Because of that, the country may strengthen its position in the next phase of the EV race, just as it did with lithium-ion over the last decade.
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