China is changing the consumption-tax treatment of several battery technologies, giving sodium-ion batteries a temporary exemption through the end of 2028.
According to an official announcement from China’s Ministry of Finance, General Administration of Customs and State Taxation Administration, lithium-ion batteries will face a 2% consumption tax from September 1, 2026, rising to 4% from September 1, 2027. Sodium-ion batteries, by comparison, will remain exempt through December 31, 2028.
For companies evaluating sodíkovo-iónová technológia, the tax difference is worth watching. But the bigger story is what the policy says about standardization, testing and the transition from an emerging battery chemistry to commercially defined products.
Kamada Power 12V 100Ah sodíkovo iónová batéria
Lithium-Ion vs. Sodium-Ion Battery: The Tax Change at a Glance
Stránka new policy was published in July 2026 and takes effect on September 1, 2026. The difference between lithium-ion and sodíkovo-iónové batérie can be summarized clearly:
| Date | Lítium-iónové batérie | Sodíkovo-iónové batérie |
|---|
| From Sept. 1, 2026 | 2% | 0% — exempt |
| From Sept. 1, 2027 | 4% | 0% — exempt |
| Through Dec. 31, 2028 | 4% | 0% — exempt |
The 2% and 4% rates also apply to several other specified battery categories, including lithium primary batteries, nickel-metal hydride batteries and vanadium redox flow batteries. Sodium-ion batteries, solid-state batteries and fuel cells receive temporary exemption treatment through the end of 2028.
This creates a clear difference in tax treatment between lithium-ion and sodium-ion batteries during an important stage of sodium-ion commercialization.
Does 0% vs. 4% Mean Sodium-Ion Will Be 4% Cheaper?
No. This is an important distinction for customers.
The percentages refer to China’s consumption tax, not a guaranteed reduction in the final price paid by an overseas customer. A four-percentage-point tax difference should therefore not be presented as a 4% purchasing-price advantage.
Final battery pricing still depends on cell costs, production volume, BMS and enclosure design, certification, logistics, project requirements and other commercial factors. The policy is better understood as a change in the commercial environment around sodium-ion, rather than a direct customer price discount.
Sodium-Ion Is Explicitly Defined in the New Framework
The policy goes beyond simply granting sodium-ion batteries a temporary exemption. Its official battery classification attachment specifically includes and defines sodium-ion batteries within the rechargeable-battery framework.
The document defines a sodium-ion battery as a device that converts chemical and electrical energy through the movement of sodium ions between the positive and negative electrodes. Lithium-ion batteries are defined in a similar way based on the movement of lithium ions.
For customers, the technical definition itself is not the main story. What matters is that sodium-ion is being treated as a clearly defined battery category within the new regulatory framework.
That becomes increasingly important as the industry moves from prototypes toward products that must be specified, tested, documented and supplied consistently.
The Import-Tax Rules Follow the Same Distinction
The policy also carries this distinction into China’s import-stage consumption-tax schedule.
Lithium-ion batteries are included under tariff line ex 85076000, with solid-state batteries excluded. Under ex 85078090, sodium-ion batteries, solid-state batteries and fuel cells are explicitly excluded from the taxable scope for other storage batteries.
The import schedule also states that its definition of sodium-ion batteries follows the same definition provided in the main battery classification attachment.
For the market, this makes the distinction more concrete: the sodium-ion exemption is reflected not only in the headline announcement, but also in the detailed import-tax classification.
Standards and Testing May Matter More Than the Tax Rate
One of the most important parts of the official announcement is easy to overlook.
For battery products manufactured or commissioned for processing in China to qualify for the specified tax reduction or exemption, they must comply with the applicable Chinese national standard. Products that do not meet the relevant standard—or for which no applicable national standard exists—cannot receive the preferential treatment.
Before making the first preferential-tax declaration, the taxpayer must also obtain a compliance test report from a testing organization with valid CMA accreditation covering the relevant battery testing items.
For the sodium-ion market, this points to a broader shift: commercialization increasingly requires more than a promising chemistry or an attractive specification sheet. Products need defined requirements, test evidence and repeatable configurations.
What Does This Mean for Companies Evaluating Sodium-Ion Batteries?
The new policy does not make sodium-ion the automatic choice over lithium-ion. A battery still has to fit the actual application.
That means evaluating operating temperature, voltage range, charging strategy, continuous and peak current, cycle profile and required usable energy. These requirements determine whether the battery is technically suitable before tax treatment or chemistry preferences are considered.
System integration matters just as much. A finished battery may need to work with an existing inverter, charger, controller, DC bus or vehicle electrical architecture.
Communication is another example. Having CAN or RS485 hardware does not automatically mean a battery will communicate correctly with a specific inverter or control system.
Mechanical requirements also matter. Dimensions, terminal layout, cable access, mounting and service space can determine whether a battery can be introduced into an existing platform without redesigning the customer’s system.
The Market Is Moving Beyond Cell-Level Comparisons
Early sodium-ion discussions focused heavily on cell-level metrics such as energy density, cycle life, materials and temperature performance. Those metrics remain important, but commercial customers ultimately deploy battery systems, not isolated chemistry.
The BMS, electrical limits, communication protocol, enclosure, connectors, protection design and project documentation all affect whether a battery can actually be integrated into an application.
As more sodium-ion products enter the market, this system-level execution will become a stronger differentiator between suppliers. A strong cell specification alone does not guarantee a commercially usable battery system.
A Good Sample Is Only the Beginning
As sodium-ion projects move toward larger commercial volumes, another question becomes increasingly important: Can the supplier reproduce what the customer approved?
A sample may perform well during evaluation, but production units still need to maintain the agreed cell configuration, BMS settings, firmware, interfaces, enclosure and critical specifications.
For OEMs and system integrators, this is the difference between passing a sample test and having a battery that can be released into regular production.
The ability to move reliably from application requirements → configuration → validation → volume supply will therefore matter as much as individual performance claims.
Where Could Sodium-Ion Gain Ground?
The tax exemption does not determine which applications sodium-ion will win. Commercial adoption is more likely where the technology solves a specific application requirement better than the available alternatives.
That advantage may come from operating conditions, system architecture, cost structure, supply requirements or other project-specific constraints. Different applications will reach different conclusions.
The useful question is therefore not whether sodium-ion is universally better than lithium-ion. It is whether sodium-ion provides a better system-level fit for a specific application.
What Should the Market Watch Through 2028?
The current exemption runs through December 31, 2028. Stránka official announcement does not specify what consumption-tax treatment sodium-ion batteries will receive after that date.
Between now and then, standards and testing will be important indicators of market maturity. Real-world deployments will matter as well, as field performance in actual applications begins to carry more weight alongside laboratory data.
Manufacturing scale is another factor to watch because higher production volumes can affect both cost structure and supply availability.
Most importantly, customers should watch whether the industry progresses from cells and prototype packs toward validated, repeatable finished battery systems that can move reliably from initial testing into commercial deployment.
What the Policy Really Means for the Sodium-Ion Battery Market
The headline is straightforward: lithium-ion batteries move to a 2% consumption tax and then 4%, while sodium-ion batteries remain exempt through the end of 2028. But the more important story is what happens behind those numbers.
Sodium-ion is entering a market environment with clearer classification, standards, testing requirements and commercial expectations. For customers, that means the focus is gradually shifting from whether sodium-ion technology is ready in general to whether a specific sodium-ion battery system is ready for a specific application.
The more useful question is therefore: “Is this sodium-ion battery system ready for our application?” Application fit, system compatibility, validation and manufacturing consistency will ultimately determine whether sodium-ion moves from an emerging technology into repeatable commercial deployment.
Záver
China’s new policy gives sodíkovo-iónová batéria a temporary consumption-tax exemption through 2028, while lithium-ion batteries move from 2% to 4%.
For customers, the bigger issue is not the tax rate itself, but whether a sodium-ion battery system can meet the project’s technical, integration and supply requirements. Contact us for prispôsobené riešenia pre sodíkové iónové batérie.
Reference Links
Ministry of Finance of the People’s Republic of China, General Administration of Customs and State Taxation Administration — Official Announcement
Attachment 1 — Official Battery Classification and Scope Notes
Attachment 2 — Battery Import-Stage Consumption Tax Tariff Schedule