Complete Guide to Japan Food Sanitation Act Import Inspection for Taiwan Exporters

The Food Sanitation Act (Shokuhin Eisei-hou), enacted in 1947 and comprehensively revised in 2018 with amendments effective June 2020, is Japan's primary legislation governing food safety, including the import of food products, food additives, food contact materials, and food packaging. The Act is administered by the Ministry of Health, Labour and Welfare (MHLW) and enforced through a network of quarantine stations (keneki-sho) located at all major Japanese ports and airports. For Taiwan food exporters, compliance with the Food Sanitation Act is mandatory: every food shipment entering Japan must clear quarantine inspection before it can be distributed in the Japanese market.

The 2018 revision introduced Japan's HACCP-based hygiene management requirement, which mandates that all food businesses, including foreign facilities exporting to Japan, implement HACCP-based food safety management systems. While Japan does not require foreign facilities to hold a specific HACCP certification, MHLW inspectors may request evidence of HACCP implementation during quarantine inspections, and having a recognized HACCP certification (such as FSSC 22000, SQF, or BRC) significantly facilitates the import clearance process. Taiwan food manufacturers exporting to Japan should implement HACCP systems aligned with Codex Alimentarius guidelines at minimum.

Japan imported approximately JPY 10.1 trillion (approximately USD 67 billion) worth of food products in 2025, making it one of the world's largest food importers. Taiwan is a significant supplier of processed foods, beverages, tea, tropical fruits, and seafood to the Japanese market. However, Japan's food safety standards are among the world's strictest, and the rejection rate for imported food products averaged approximately 0.4 percent of all import notifications in recent years, with higher rejection rates for certain product categories and source countries. Understanding the inspection process and preparing compliance documentation in advance is essential for avoiding costly rejections that can result in destruction of goods, re-export expenses, and temporary import suspensions.

The import inspection process begins before the food arrives in Japan. The importer (or their customs broker) must submit an Import Notification (Yunyuu Todokede) to the quarantine station with jurisdiction over the port of entry. This notification provides detailed information about the food product, including the product name, ingredients, manufacturing process, country of origin, manufacturing facility, and quantity. The quarantine station reviews the notification and determines what type of inspection, if any, is required. Taiwan exporters should work closely with their Japanese importer to ensure the Import Notification is accurate and complete, as errors or omissions in the notification are a common cause of inspection delays.

MHLW operates 31 quarantine stations across Japan, with major stations at Yokohama, Kobe, Osaka (Kansai Airport), Narita Airport, Nagoya, and Hakata (Fukuoka). When an Import Notification is submitted, the quarantine station conducts an initial document review to determine the appropriate inspection pathway. The station classifies the shipment into one of four categories: document review only (shomen shinsa), monitoring inspection (monitoring kensa), ordered inspection (meirei kensa), or voluntary inspection (jihatsu kensa). The classification depends on the product type, the country of origin, the manufacturer's compliance history, and any current import alerts or enhanced surveillance directives issued by MHLW.

Document review only (shomen shinsa) is the fastest pathway and applies to products that are considered low-risk based on their compliance history and product category. The quarantine station reviews the Import Notification and supporting documents without physically inspecting or testing the product. If the documents are in order, clearance is typically granted within 1 to 3 business days. Approximately 85 to 90 percent of import notifications are cleared through document review alone. However, even products cleared through document review may be randomly selected for monitoring inspection at MHLW's discretion.

Monitoring inspection (monitoring kensa) is a statistical sampling program conducted by MHLW to verify the safety of imported foods on an ongoing basis. MHLW selects products for monitoring inspection based on a risk-based annual monitoring plan that identifies priority product categories, countries of origin, and contaminants. Monitoring inspections involve collecting samples from the shipment and testing them at MHLW's quarantine station laboratories or designated registered inspection agencies. Testing typically covers pesticide residues, veterinary drug residues, mycotoxins, heavy metals, food additives, and microbiological parameters. Monitoring inspection results are usually available within 7 to 14 business days, and the shipment may be released before results are obtained if the product has a good compliance history.

Ordered inspection (meirei kensa) is the most stringent inspection type and is triggered when a product or source country has a history of violations or when MHLW identifies a specific safety concern. Under ordered inspection, every shipment of the specified product from the specified country must be sampled and tested before release. The shipment cannot be released until test results confirm compliance, which typically takes 10 to 21 business days. Ordered inspections are imposed through MHLW inspection orders (kensa meirei) published on the MHLW website. Taiwan food products that have been subject to ordered inspection in recent years include certain processed foods with prohibited additive violations and agricultural products with pesticide residue exceedances.

Taiwan exporters should monitor MHLW's published inspection orders and violation reports to identify whether their product categories are subject to enhanced inspection. MHLW publishes monthly import violation statistics on its website, listing the product, country of origin, violation type, and the name of the importing company. These reports are invaluable for understanding Japan's current enforcement priorities and identifying common compliance pitfalls. If your product category or country of origin appears frequently in violation reports, proactively test your products against Japanese standards before export to minimize the risk of quarantine rejection.

Japan's food additive regulation operates on a positive list system, meaning only food additives that are specifically designated by MHLW may be used in food products sold in Japan. As of 2026, approximately 831 substances are designated as permitted food additives, and approximately 365 are classified as existing food additives (kizon tenkabutsu) that were in use before the current regulatory framework was established. If a food product contains any additive that is not on Japan's positive list, the product will be rejected at quarantine regardless of whether the additive is permitted in Taiwan, the EU, or the United States.

The additive positive list discrepancy between Japan and other countries is one of the most common causes of food import rejections. Additives that are widely used in Taiwan and other Asian food manufacturing but are not permitted in Japan include certain synthetic colorants, preservatives, and processing aids. For example, potassium bromate, permitted as a flour treatment agent in some countries, is not approved in Japan. Similarly, certain antioxidants and emulsifiers commonly used in Taiwan food products may not have Japanese approval. Taiwan manufacturers must compare their ingredient and additive lists against the MHLW designated additive list and substitute any non-approved additives before exporting to Japan.

Japan's pesticide residue standards are established under the positive list system for agricultural chemical residues, implemented in May 2006. Under this system, all agricultural chemicals (pesticides, veterinary drugs, and feed additives) for which Maximum Residue Limits (MRLs) have not been specifically established are subject to a uniform limit of 0.01 ppm (parts per million). This is one of the world's strictest default limits and catches many products that would pass pesticide residue testing in other countries. Taiwan agricultural exporters must verify that the specific pesticides used in their farming practices are covered by Japanese MRLs and that residue levels fall within the Japanese limits, which may be significantly lower than Taiwan's domestic standards.

MHLW regularly updates its MRL tables, and new limits can be established or existing limits tightened through revisions to the Food Sanitation Act enforcement regulations. Taiwan exporters should subscribe to MHLW's notification system or work with a Japanese regulatory consultant to monitor changes to MRLs that affect their product categories. Testing your products against Japanese residue standards before export costs approximately JPY 30,000 to JPY 100,000 (USD 200 to USD 670) per sample at accredited laboratories in Taiwan such as SGS Taiwan, SuperLab, or the Taiwan Food Industry Research and Development Institute (FIRDI). Pre-export testing is far less expensive than the cost of a quarantine rejection, which can include destruction charges of JPY 50,000 to JPY 500,000 plus the loss of the entire shipment value.

Analysis of MHLW's published import violation data reveals consistent patterns in rejection reasons for Asian food products. The top five rejection categories are: non-approved food additives (accounting for approximately 30 percent of violations), pesticide residue exceedances (approximately 25 percent), aflatoxin and other mycotoxin contamination (approximately 15 percent), microbiological contamination including E. coli, Salmonella, and Listeria (approximately 10 percent), and labeling violations (approximately 10 percent). For Taiwan-origin products specifically, the most common issues are non-approved food additives in processed foods and beverages, and pesticide residues in tea and agricultural products.

Preventing additive-related rejections requires a systematic ingredient review process. Create a master list of all ingredients, sub-ingredients, and processing aids used in each product destined for the Japanese market. For each substance, verify its approval status against MHLW's designated additive list, existing food additive list, and generally recognized as safe (GRAS) natural flavoring substance list. Pay special attention to carry-over additives: additives present in purchased ingredients that may not appear on your own manufacturing records. For example, a preservative used in a spice blend purchased from a sub-supplier may carry over into your final product and trigger a rejection if it is not on Japan's positive list.

Preventing pesticide residue rejections requires coordination with agricultural suppliers. Provide suppliers with a list of Japanese MRLs for the specific pesticides used in their farming practices and establish contractual requirements for pre-harvest interval compliance and residue testing. For high-risk products such as tea, fruits, and vegetables, implement a pre-export testing program that tests every production lot against Japanese MRL tables. The cost of pre-export testing is typically 1 to 3 percent of the shipment value, which is a worthwhile insurance cost given that a single quarantine rejection can result in MHLW ordering enhanced inspection on all future shipments of the same product from Taiwan, affecting not just your company but potentially all Taiwan exporters of that product category.

LNH31 Global recommends that Taiwan food exporters targeting the Japanese market engage a Japanese food regulatory consultant for an initial compliance assessment before the first shipment. The consultant should review product formulations, ingredient lists, manufacturing processes, and labeling for compliance with the Food Sanitation Act, the Food Labeling Act (Shokuhin Hyouji-hou), and any applicable product-specific standards such as the Japan Agricultural Standards (JAS). This initial assessment typically costs JPY 200,000 to JPY 500,000 (USD 1,300 to USD 3,300) and provides a comprehensive compliance roadmap that prevents costly trial-and-error approaches to Japanese food import compliance.