Japan's October 2026 Heated Tobacco Tax Change Explained (full application of the new conversion method, and cigarette tax rises from 2027)

About this article and disclaimer

This is a third-party explanation compiled as of July 2026 from the Ministry of Finance "FY2025 Tax Reform Outline" (https://www.mof.go.jp/tax_policy/tax_reform/outline/fy2025/07taikou_06.htm) and the National Tax Agency's "On the revision of the taxation method for heated tobacco (from 1 April 2026)" (https://www.nta.go.jp/information/other/data/r08/tabacco/03.htm), both official primary sources.

For detailed tax treatment, individual tax positions, and the application of transitional measures, always check the official materials of the Ministry of Finance and the National Tax Agency. For individual tax advice, consult a tax office or a certified tax accountant. This article does not encourage smoking. Smoking by people under 20 is prohibited by the Act on Prohibition of Smoking by Persons Under Twenty Years of Age.

What changes on 1 October 2026

In short, what changes on 1 October 2026 is "how the tax on heated tobacco is calculated." A unit of "number of sticks" as used for cigarettes does not directly apply to heated tobacco. Japan's tobacco tax system therefore calculates the tax by first converting heated tobacco into "how many cigarettes it is equivalent to." This conversion method was revised in the FY2025 (Reiwa 7) tax reform.

The purpose of the revision is to eliminate the difference in tax burden that existed between heated tobacco and cigarettes. The new conversion method has been introduced in stages since 1 April 2026, and 1 October 2026 is the second stage — the date on which the new method applies in full (100%).

• What changes: the tax base for heated tobacco (the method of conversion into cigarette equivalents)
• Stage 1: 50% application of the new conversion method from 1 April 2026
• Stage 2: 100% application of the new conversion method from 1 October 2026
• Purpose: eliminating the tax burden gap between heated tobacco and cigarettes
• Scope: the revision of the tax base applies to local tobacco taxes as well, not only the national tobacco tax

The new conversion method: 0.35 grams / 0.2 grams equals one cigarette

According to the Ministry of Finance "FY2025 Tax Reform Outline," the conversion method for the tax base of heated tobacco is set as follows. For heated tobacco of the type that uses cigarettes, 0.35 grams is converted into one cigarette. For other types, 0.2 grams is converted into one cigarette.

• Type that uses cigarettes: 0.35 grams = one cigarette equivalent
• Other types: 0.2 grams = one cigarette equivalent

According to the National Tax Agency's explanation, heated tobacco is divided into "stick type" and "non-stick type," where the stick type is one in which all or part of the product including the filter is wrapped in a covering, and the non-stick type is everything else. Rules based on weight are also set for the non-stick type (capsule type and similar), but we do not state the specific figures here because we could not fully reconcile the descriptions across the published materials we checked. For the detailed conversion formulas and category definitions, please refer to the National Tax Agency's official explanation.

Note that this revision changes the "conversion method"; it does not change the specifications of heated tobacco products themselves or the rules on where they may be used. Indoor use follows the revised Health Promotion Act (fully in force since 1 April 2020), under which heated tobacco may be used in a smoking-dedicated room or a heated-tobacco-only smoking room meeting the standards.

The two-stage schedule (April 2026 = 50%, October 2026 = 100%)

The new conversion method is not applied in full at once but introduced in two stages. According to the Ministry of Finance "FY2025 Tax Reform Outline," from the first stage on 1 April 2026 the tax base is the sum of one half of the number under the current conversion method and one half of the number under the new conversion method. In other words, the new method is reflected only at 50%.

Then, from the second stage on 1 October 2026, the number under the new conversion method applies at 100% — that is, in full. So from the perspective of the tax burden on heated tobacco, 1 October 2026 is the point at which the transition to the new method is complete.

• Until 31 March 2026: the current conversion method
• 1 April 2026 – 30 September 2026: current conversion × one half + new conversion × one half (50% application)
• From 1 October 2026: new conversion × 100% (full application)

Splitting it into stages appears intended to avoid producing the whole change in tax burden at once and to smooth the impact on the market and consumers. Price revisions centred on heated tobacco were in fact carried out in April 2026, and manufacturers are expected to consider price revisions again at the second stage in October 2026 — but the content of any such revision is a matter for each company's own announcement.

For brand-by-brand price increases, check each manufacturer's announcement

This is the point we most want to emphasise. What the tax reform determines is "how the tax is calculated," not the price of the products sold in shops. Under Article 33 of the Tobacco Business Act, the retail price of manufactured tobacco must be set as a single retail price for each product and approved by the Minister of Finance. Furthermore, under Article 36, paragraph 1 of the same Act, retailers may not sell manufactured tobacco other than at the approved retail price.

In other words, the actual amount is fixed only once each tobacco company applies to the Minister of Finance for approval of a retail price and that approval is granted. The increase in tax is not necessarily passed on to the price in full, and the extent of any revision may differ from product to product and brand to brand. This article does not assert the specific brand-by-brand price increases or post-revision retail prices from 1 October 2026.

• What the tax reform determines is the method of calculating the tax
• Retail prices require approval by the Minister of Finance for each product under Article 33 of the Tobacco Business Act
• Under Article 36, paragraph 1 of the same Act, selling other than at the approved retail price is not permitted
• For brand-by-brand revisions, check each company's approval application and announcement
• This article does not assert brand-by-brand increases or post-revision prices

For a guide to price levels published as of now, see the guide to cigarette prices and buying in Japan. For differences between heated tobacco brands and devices, and the rules on where they may be used, see the IQOS, glo and Ploom heated tobacco guide. Prices in both are subject to revision, so check the latest retail prices with each manufacturer and at points of sale.

From 2027: staged rises in the cigarette tax rate (three steps)

Following the revision of the conversion method for heated tobacco, rises in the national tobacco tax rate are also planned for cigarettes. According to the Ministry of Finance "FY2025 Tax Reform Outline," the national tobacco tax rate on cigarettes rises in stages from the statutory rate of 6,802 JPY per 1,000 cigarettes, ultimately reaching 8,302 JPY.

• Statutory rate: 6,802 JPY per 1,000 cigarettes
• 1 April 2027: 7,302 JPY per 1,000 cigarettes
• 1 April 2028: 7,802 JPY per 1,000 cigarettes
• 1 April 2029: 8,302 JPY per 1,000 cigarettes

From the statutory rate of 6,802 JPY to the final 8,302 JPY is a rise of 1,500 JPY per 1,000 cigarettes, which corresponds to 1.5 JPY per cigarette. For a pack of 20, that is a rise of 30 JPY per pack on a tax basis — but again, this does not necessarily translate directly into the increase in shelf price. Retail prices are determined through each company's approval application.

Note that this increase in tobacco tax revenue is positioned as part of the tax measures to secure funding for strengthening defence capabilities. The additional revenue from the revision of the heated tobacco taxation method is also handled within this funding framework.

For visitors to Japan: tobacco prices are expected to rise

If you are planning to visit Japan, it is worth bearing in mind that Japanese tobacco prices are expected to rise in stages over the coming years. The new conversion method for heated tobacco applies in full from October 2026, and the national tobacco tax rate on cigarettes rises in stages in April 2027, April 2028 and April 2029.

However, all of these concern tax amounts; the actual shelf price at the time of your trip depends on the retail prices each company sets with the approval of the Minister of Finance. For accurate prices during your visit, check the price displays at convenience stores and tobacco shops, or each company's official site. In Japan you will be asked to confirm you are 20 or older when buying tobacco, and a passport is accepted as identification.

The duty-free allowance for bringing tobacco into Japan is set by Japan Customs. If you exceed the allowance, you must declare it at customs on arrival and pay duty. For details of the allowance, check the official Japan Customs guidance. Within Japan, nicotine-containing e-cigarette liquid is regulated under the Pharmaceuticals and Medical Devices Act and is not permitted for sale domestically.

If rising prices prompt you to reconsider smoking

Rising prices may prompt some people to reconsider their smoking habit. In Japan, some medical institutions provide smoking cessation outpatient services, and some municipalities operate health consultation desks. For whether these are suitable for you and what they involve, consult a specialist such as a doctor or pharmacist. This article does not claim the effectiveness of any particular method, nor does it recommend any particular product or service.

If you continue to smoke, complying with the law and with municipal rules is the baseline. Under the revised Health Promotion Act, fully in force since 1 April 2020, indoor areas of facilities used by many people are in principle non-smoking. In addition, many municipalities have ordinances on street smoking, and some impose administrative fines on violators. When you smoke, use a designated smoking location.

Find places where smoking is permitted with MottoSuitai

However the tax system changes, the rules on where tobacco may be used follow the revised Health Promotion Act and each municipality's ordinance. To find places where smoking is permitted, you can list nearby smoking areas from MottoSuitai's map. For tobacco prices and how to buy in Japan, see the guide to cigarette prices and buying in Japan; for rules on using heated tobacco, the IQOS, glo and Ploom heated tobacco guide; and for differences in street-smoking rules and fines between municipalities, the guide to street-smoking fines.

Finally: check official Ministry of Finance and National Tax Agency materials

This is a third-party explanation compiled from the Ministry of Finance "FY2025 Tax Reform Outline" and the National Tax Agency's explanation as published as of July 2026. The tax system may change through future tax reforms. For details of the system, the application of transitional measures, and individual tax positions, always check the official materials of the Ministry of Finance (https://www.mof.go.jp/) and the National Tax Agency (https://www.nta.go.jp/). For brand-by-brand prices, check each manufacturer's announcement. For individual tax advice, consult a tax office or a certified tax accountant.