Japan Food Labeling Act Compliance Guide for Taiwan Exporters

The Japan Food Labeling Act (Shokuhin Hyoji Ho), effective since April 2015 and fully enforced including nutrition labeling since April 2020, consolidated three previous food labeling laws into a single comprehensive framework administered by the Consumer Affairs Agency (CAA, Shohi-sha Cho). The Act applies to all pre-packaged food products sold in Japan, including imported products. For Taiwan food exporters, compliance with the Food Labeling Standards (Shokuhin Hyoji Kijun) is mandatory before any product can legally enter the Japanese retail market.

The Food Labeling Standards prescribe the format, content, and placement of mandatory label elements for three categories of food: fresh food (nama shokuhin), processed food (kako shokuhin), and food additives. Most Taiwan food exports fall into the processed food category. Mandatory label elements for processed food include: product name, ingredient list, allergen declarations, net weight, best-before or use-by date, storage instructions, country of origin, importer name and address in Japan, and nutrition facts panel. All mandatory information must be in Japanese -- bilingual labels (Japanese plus Chinese or English) are acceptable as long as all mandatory elements appear in Japanese.

Enforcement of food labeling is conducted by the CAA, the Ministry of Health, Labour and Welfare (MHLW) for food safety and additives, the Ministry of Agriculture, Forestry and Fisheries (MAFF) for quality standards and origin, and prefectural health departments for retail-level compliance. Penalties for labeling violations include: orders to correct labeling (the most common enforcement action), public disclosure of the violation (which carries severe reputational damage in Japan's trust-sensitive market), fines of up to JPY 100 million for companies, and imprisonment of up to 2 years for individuals who knowingly provide false labeling.

Taiwan food exporters should note that Japan's food labeling framework is substantially more detailed and prescriptive than Taiwan's equivalent regulations. Areas of particular divergence include: allergen declaration requirements (Japan has a unique mandatory and recommended allergen list), food additive regulations (many additives permitted in Taiwan are restricted or banned in Japan), origin marking rules (different from Taiwan's country of origin requirements), and nutrition facts panel format (different from both Taiwan and US formats). Every Taiwan product requires a Japan-specific label reviewed by a Japanese food labeling specialist.

Mandatory nutrition labeling was phased in under the Food Labeling Standards and became fully mandatory for all pre-packaged processed foods from April 2020. The mandatory nutrition facts panel (Eiyou Seibun Hyoji) must declare: energy (kilocalories, kcal), protein (grams), fat (grams), carbohydrate (grams), and sodium (expressed as salt equivalent -- shokuensoutoryou -- in grams). This five-nutrient mandatory panel differs from the US (14 mandatory nutrients) and Australia (7 mandatory nutrients). Additional nutrients (saturated fat, dietary fiber, calcium, iron, vitamins) may be declared voluntarily.

The sodium-to-salt-equivalent conversion is a critical compliance detail. Japan requires sodium to be expressed as "salt equivalent" (shokuensoutoryou), calculated as: sodium (mg) x 2.54 / 1,000 = salt equivalent (g). This is unique to Japan -- no other major market uses this conversion. Taiwan labels showing sodium in milligrams must be converted to salt equivalent in grams for the Japanese label. The rounding rule is one decimal place (e.g., 1.2g, not 1.23g or 1g).

Nutrition values must be expressed per 100g, per 100mL, per serving, per package, or per other unit of quantity as defined by the manufacturer. Unlike Australia (which requires both per serving and per 100g), Japan allows any one of these bases. However, if values are expressed per serving, the serving size (1 serving = XX grams) must be clearly stated. The most common format for imported processed foods is per 100g or per individual serving unit. Choose the basis that provides the most consumer-friendly comparison for your product category.

Laboratory analysis for nutrition facts should be conducted at a laboratory accredited by the CAA or a recognized international laboratory. Major Japanese food testing laboratories include: Japan Food Research Laboratories (JFRL), Japan Frozen Foods Inspection Corporation, and Bureau Veritas Japan. Testing costs range from JPY 30,000 to JPY 80,000 per product for the 5 mandatory nutrients. For products making voluntary nutritional claims (e.g., "high in calcium"), the claimed nutrient must also be analyzed and must meet the minimum threshold specified in the Nutrient Function Claims guidelines.

Tolerance limits for nutrition label accuracy are specified by the CAA: for energy, protein, fat, and carbohydrate, the declared value must be within plus or minus 20% of the actual analyzed value. For salt equivalent, the tolerance is plus or minus 20%. Values declared as "0" must have actual content below specified thresholds (e.g., less than 5kcal per 100g for "0 kcal" claims). Taiwan brands should err on the side of conservative declarations and verify accuracy through laboratory analysis before printing labels.

Japan's allergen labeling system is unique globally, comprising 7 mandatory declaration items (tokutei genryou) and 21 recommended declaration items (tokutei genryou ni junzuru mono). The 7 mandatory allergens are: egg (tamago), milk (nyuu), wheat (komugi), buckwheat (soba), peanut (rakkasei), shrimp (ebi), and crab (kani). Declaration of these 7 allergens is legally required whenever they are present as ingredients, additives, or processing aids, regardless of the quantity.

The 21 recommended allergens include: abalone (awabi), squid (ika), salmon roe (ikura), orange (orenji), cashew nut (kashuu natsu), kiwi fruit (kiwi furuutsu), beef (gyuuniku), walnut (kurumi -- reclassified to mandatory from March 2025), sesame (goma), salmon (sake), mackerel (saba), soybean (daizu), chicken (toriniku), banana (banana), pork (butaniku), matsutake mushroom (matsutake), peach (momo), yam (yamaimo), apple (ringo), gelatin (zerachin), and almond (aamondo). While technically "recommended," failure to declare these allergens when present is viewed negatively by regulators and retailers, and most Japanese food companies treat them as effectively mandatory.

Allergen declaration format in Japan follows two permitted methods: individual declaration (kobetsu hyoji), where each allergen is identified in parentheses after the relevant ingredient in the ingredient list (e.g., "shortening (contains milk, soybeans)"), or summary declaration (ikkatsu hyoji), where all allergens are listed together at the end of the ingredient list in a "(contains: egg, milk, wheat)" statement. The individual declaration method is preferred by the CAA and increasingly expected by retailers and consumers. Many Japanese retailers (including Aeon, Seven & i, and Lawson) now require the individual declaration method from all suppliers.

Cross-contamination precautionary labeling is handled differently in Japan than in Australia or the US. The Japanese approach uses the phrase "This product is manufactured in a facility that also processes products containing [allergen]" (Honhin wa [allergen] wo fukumu seihin to onaji setsubi de seizou shite imasu). This statement is voluntary but strongly recommended for products manufactured on shared equipment. Unlike Australia's VITAL system, Japan does not have a standardized threshold-based system for precautionary labeling -- the decision to include a precautionary statement is based on the manufacturer's risk assessment.

Practical compliance steps for Taiwan exporters: obtain a complete ingredient specification from every raw material supplier showing all allergens present (including processing aids), map these against Japan's 28-item allergen list (7 mandatory + 21 recommended), prepare allergen declarations in both individual and summary formats (to meet different retailer requirements), conduct allergen testing for finished products using ELISA or PCR methods (JPY 10,000 to 30,000 per allergen per product), and maintain allergen management documentation that can be provided to Japanese importers and retailers upon request.

Japan's food additive regulations are among the most restrictive globally. The Food Sanitation Act (Shokuhin Eisei Ho) maintains a positive list of approximately 830 designated food additives (shitei tenkabutsu) that are explicitly permitted for use in food. Any additive not on this positive list is prohibited in food sold in Japan -- regardless of its approval status in Taiwan, the US, the EU, or other markets. Additionally, Japan recognizes approximately 360 existing food additives (kizon tenkabutsu) with traditional use history and approximately 600 natural flavoring substances.

Taiwan brands must cross-reference every additive in their product formulations against Japan's positive list before export. Common additives permitted in Taiwan but restricted or banned in Japan include: certain artificial colors (e.g., Red 40/Allura Red is permitted in Japan but Amaranth/Red 2 is banned), certain preservatives (e.g., potassium sorbate usage levels differ between Taiwan and Japan), and certain emulsifiers (e.g., some polysorbates have different maximum usage levels). The Japan External Trade Organization (JETRO) publishes a searchable food additive database at jetro.go.jp that Taiwan exporters should use for cross-referencing.

Food additive labeling requirements in Japan are specific: every additive must be declared by its designated name or category name in the ingredient list, with the purpose of the additive indicated. Additive purposes include: sweetener (kanmiryo), colorant (chakushokuryo), preservative (hozonryo), antioxidant (sankaboshizai), thickener (zounenzai), and others. For example, a label would read "sweetener (sucralose)" or "colorant (annatto)." Some additives require purpose-specific labeling even when used at levels below typical taste or function thresholds.

Carry-over exemptions apply when an additive is present in the final product only because it was used in a raw material ingredient and carries over in functionally insignificant amounts. For example, if a Taiwan-made sauce contains soy sauce that was preserved with sodium benzoate during production, the sodium benzoate carries over into the final sauce but does not serve a preservative function in the finished product. Under Japan's carry-over rule, the sodium benzoate need not be declared on the final product label if it is present below functional levels. However, this exemption does not apply if the carry-over additive is not on Japan's positive list -- even trace amounts of non-permitted additives make the product non-compliant.

Reformulation is often necessary for Taiwan products entering Japan. Common reformulation requirements include: replacing non-permitted preservatives, adjusting artificial color formulations to use only Japan-approved colorants, modifying flavoring systems to use only Japan-recognized natural flavoring substances, and reducing additive usage levels to meet Japan's maximum permitted levels (which are often lower than Taiwan's limits for the same additive). Budget 3 to 6 months for reformulation and retesting when product adjustments are required.

Country of origin labeling for imported processed foods in Japan is mandatory under the Food Labeling Standards. The label must clearly state "Country of Origin: Taiwan" (Gensankokumei: Taiwan) in Japanese. For products containing multiple ingredients from different countries, the country of origin refers to the country where the final substantial transformation occurred -- for Taiwan-manufactured products using globally sourced ingredients, "Taiwan" is the correct origin declaration as long as the product undergoes substantial transformation (manufacturing, processing, or significant value-adding) in Taiwan.

The importer's name and address in Japan must appear on every food label. This requirement means Taiwan brands must have a Japanese importer (typically a trading company, distributor, or import agent) whose company name, postal address (including postal code), and phone number appear on the product label. The importer assumes legal responsibility for the product's compliance with Japanese food safety and labeling laws. Selecting an importer with food labeling expertise and regulatory compliance infrastructure is essential -- regulatory violations affect the importer's standing with Japanese authorities.

New origin labeling rules introduced in phases since 2022 require declaration of the country of origin for the top ingredient by weight in imported processed foods. If a Taiwan snack product's primary ingredient is rice, the label must declare the origin of the rice (e.g., "Rice (Thailand)" or "Rice (Taiwan)"). If the origin of the primary ingredient varies between production batches, the label can use the format "Rice (Country A or Country B)" listing countries in descending order of anticipated usage volume. This rule adds complexity for Taiwan brands sourcing ingredients from multiple countries.

Label placement and formatting rules: all mandatory information must be displayed in a unified label area (ikkatsu hyoji) on the package -- a single, unbroken rectangular area where all mandatory elements (product name, ingredients, allergens, additives, net weight, dates, storage, origin, and importer) are presented together. Text size must be minimum 8-point font (approximately 2.2mm x-height), and the label must be clearly legible against the background color. The unified label format ensures consumers can find all mandatory information in one location rather than searching across multiple panels.