Heated tobacco tax method revised — cigarette-count conversion reviewed and minimum taxation introduced (two stages: April and October 2026)
Source material is a Japanese government announcement (in Japanese); this page is a summary.
From 1 April 2026 Japan revised how heated tobacco is taxed (the method for converting it into a number of cigarettes), splitting it into 'stick type' and 'other than stick type' and introducing minimum taxation. To ease the change, the revision takes effect in two stages: 1 April 2026 (stage 1) and 1 October 2026 (stage 2).
Key facts
| Effective date (revised taxation method) | 1 April 2026 (Reiwa 8) |
|---|---|
| Legal basis | Reiwa 7 (fiscal 2025) tax reform |
| Categories | Split into 'stick-type heated tobacco' and 'heated tobacco other than stick type' |
| Conversion principle | In principle, converted into a number of cigarettes based on the weight of each pack |
| Minimum taxation (stick type) | If one stick weighs less than 0.35 g, one stick counts as one cigarette |
| Minimum taxation (other than stick type) | If one pack weighs less than 4 g, one pack counts as 20 cigarettes |
| Reason for the phased approach | The national and local tax bases are reviewed in stages to ease an abrupt change |
| Stage 1 (from 1 April 2026) | 0.5 by the pre-revision method + 0.5 by the revised method |
| Stage 2 (from 1 October 2026) | 1.0 by the revised method (the pre-revision method no longer applies) |
| Background (Ministry of Finance outline) | Removing the difference in tax burden and using the revenue for defence funding; raising the national tobacco tax rate to secure funding equivalent to 3 yen per cigarette |
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Under the Reiwa 7 (fiscal 2025) tax reform, Japan revised the method for converting heated tobacco (加熱式たばこ) into a number of cigarettes from 1 April 2026. Heated tobacco is split into 'stick type' and 'other than stick type' and is, in principle, converted into a number of cigarettes based on the weight of each pack. A minimum taxation structure has also been introduced. The review of the national and local tax bases is carried out in two stages — 1 April 2026 (stage 1) and 1 October 2026 (stage 2) — to ease a sharp increase in the burden (激変緩和). As background, the Ministry of Finance's Reiwa 6 (fiscal 2024) tax reform outline states that the aim is to remove the difference in tax burden between heated tobacco and cigarettes and to use the revenue for defence funding.
Background — why this change
According to the Ministry of Finance's Reiwa 6 (fiscal 2024) tax reform outline, an unfair difference in tax burden has arisen between heated tobacco and cigarettes. Following the basic idea of consumption taxation that the same kind of, or equivalent, products should carry the same burden, the outline states that this difference in tax burden will be removed and that the extra revenue from making the taxation appropriate will be used for defence funding. It also states that the national tobacco tax rate will be raised so that, together with the extra revenue from making the taxation appropriate, funding equivalent to 3 yen per cigarette is secured. The National Tax Agency explains that this review of the taxation method is being carried out in stages from 1 April 2026 from the standpoint of easing an abrupt change, to avoid a sharp increase in the burden.
Summaries below are factual notes based on government announcements and primary sources — not evaluations or opinions.
Summaries reflect national-level programs. Municipal (city/ward/town) programs may differ — confirm with the official desk before applying.
FAQ
When does the revised taxation method take effect?
The revised method for converting heated tobacco into a number of cigarettes takes effect on 1 April 2026 (Reiwa 8). The legal basis is the Reiwa 7 (fiscal 2025) tax reform.
Why is it done in two stages?
The National Tax Agency explains that it reviews the national and local tax bases in stages, from the standpoint of easing an abrupt increase in the burden. Stage 1 starts on 1 April 2026 (0.5 by the pre-revision method + 0.5 by the revised method) and stage 2 on 1 October 2026 (1.0 by the revised method).
How is heated tobacco classified and converted?
It is split into 'stick type' and 'other than stick type', and in principle converted into a number of cigarettes based on the weight of each pack. Under minimum taxation, a stick weighing less than 0.35 g counts as one cigarette, and a pack of the other type weighing less than 4 g counts as 20 cigarettes.