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[2025 Latest] Complete Guide to ESG Filing: System Operations, Filing Timeline, and Common Report Deficiencies

If you are a domestic listed company, you must complete the sustainability report filing according to FSC regulations by the end of August 2025. This article will help you fully understand the latest ESG filing system, including digital platform functions, key timelines, and common error analysis, helping enterprises complete compliance tasks on time and painlessly.

ChatGPT Image 2025年6月18日 下午01_16_25

1. Important Sustainability Information Filing Timeline

Sustainability Information Timeline

All the above sustainability information filing operations can be filed through the Market Observation Post System (SII) according to their filing time.

2. How to Use the ESG Digital Platform for Filing?

ESG Digital Platform Filing Path

Source: "Corporate ESG Information Disclosure Filing Operations" and "Sustainability Report Filing Operations"

Log in to the Market Observation Post System (SII) according to the filing time, and enter the filing platform according to the filing item in the left column of the filing system.

(1) ESG Information Disclosure Filing Operations

There are 97 ESG indicators in total, including 49 mandatory disclosure indicators from "ESG indicators filed since 2021," "Annual report appendix climate-related issue management indicators," and "Social and governance indicators," plus 48 mandatory or encouraged disclosure indicators filed by industry.

Enterprises must fill in relevant information on the ESG digital platform by the end of June each year. You can also download the EXCEL file from the filing page and select the batch import function in the upper right corner of the filing page. After indicator data is imported, it can still be edited and modified. Remember to click "Confirm Filing" after completion.

ESG Digital Platform Filing

Source: "Corporate ESG Information Disclosure Filing Operations" and "Sustainability Report Filing Operations"

If corrections are needed after confirming the filing, click on the correction application on the data filing page, provide an email and explanation of the correction reason. After TWSE/TPEx staff confirm, the applicant will be notified by email and editing functions will be enabled.

ESG Information Disclosure FAQ

Q1: If the previous year's information is not complete at the time of filing, how should the information be filled in?

A1: If coefficients have not been updated, you can use the previous year's coefficients for estimation, and apply for correction after the coefficients are updated; if third-party verification has not yet been obtained, you can first fill in the existing calculated data and indicate no verification, then apply for correction after obtaining verification.

Q2: If intensity data is calculated using different calculation bases, resulting in two or more data sets being presented in the annual report (or sustainability report), how should this be presented?

A2: First fill in using one intensity calculation method, and explain other calculation standards and results in the text field.

Q3: If various information belongs to different departments within the company, can different departments fill in separately?

A3: Each department within the company can fill in separately in the system, but avoid using it at the same time to prevent saved data from being overwritten.

Learn more about solutions for different departments to collaborate on sustainability information aggregation with real-time synchronized data saving

(2) Sustainability Report Filing Instructions

Enterprises must access the sustainability report filing page on the ESG digital platform by the end of August each year. Sustainability reports include Chinese or English versions (English version is not mandatory but can earn points in evaluations). Select the filing version and confirm the filing year before filing.

ESG Digital Platform Filing

Can the electronic file still be updated after the sustainability report is filed?

If the electronic file content needs adjustment after confirmation of filing, you can update the revised version at any time (revised sustainability reports do not require TWSE/TPEx approval)

If the adjusted content is information such as whether the report has been assured or submitted to the board of directors, please apply for correction, providing an email and explanation of the correction reason. After TWSE/TPEx staff confirm, the applicant will be notified by email and editing functions will be enabled.

Sustainability Report Correction Application

Sustainability Report Correction Application

Source: "Corporate ESG Information Disclosure Filing Operations" and "Sustainability Report Filing Operations"

3. Three Common Sustainability Report Deficiencies and Solutions

Common Sustainability Report Deficiency Categories

Source: "Listed and OTC Companies 2023 Sustainability Report and Assurance Institution Working Paper Review Report," Chart by Sustaihub

(1) Which GRI Standards Are Most Likely to Be Non-Compliant?

In the 2023 sustainability reports, GRI 2-21 Annual Total Compensation Ratio had the highest deficiency rate. Additionally, GRI 2-30 Collective Bargaining Agreements and GRI 2-19 Remuneration Policies also had deficiency rates exceeding 10%.

(2) Incomplete Climate and Greenhouse Gas Disclosure Information

For climate and greenhouse gas disclosure, deficiencies are mostly due to undisclosed or incompletely disclosed information. It's also worth noting that information disclosure methods must be presented according to the Taiwan Stock Exchange's "Operating Guidelines for Listed Companies to Prepare and File Sustainability Reports" Appendix 2 format to be compliant.

(3) Industry Sustainability Indicator Deficiencies Are Mainly: Not Disclosing Complete Information According to Operating Guidelines Appendix Requirements and Not Obtaining CPA Assurance Opinions.

According to the "Report Operating Guidelines," the food industry, financial industry, and chemical industry should obtain CPA assurance according to industry sustainability indicators. Beyond these industries, digital sustainability management systems can help inventory content for "enhanced disclosure of sustainability indicators by industry" such as: plastics, steel, cement, semiconductors, computers and peripherals, optoelectronics, communications and networking, electronic components, electronic distribution, and other electronics. It can also manage verification and assurance preparation materials in one place, improving report data quality and preparing for sustainability performance in future years!

For more information visit: https://www.sustaihub.com/

Sustainability Report Compliance Is No Longer Difficult. The 3 Key Compliance Factors Are:

1. Responding to GRI Standards Requirements:

Especially for the mandatory disclosure parts GRI 2 and GRI 3 in GRI Standards. (Extended reading: Corporate Governance Evaluation Results Released! Countdown to ESG Evaluation Transformation, Latest 114 Fiscal Year Scoring Items and Regulations)

2. Completeness of Information Disclosure:

Inventory each GRI disclosure item corresponding to each material topic item by item, confirm which items have data and which need to be supplemented. While inventorying sustainability indicators, understand areas where the enterprise can strengthen.

3. Accuracy of Sustainability Information:

If a report has data errors, even if the format is perfect, it cannot pass regulatory authority reviews. It is recommended to systematically unify sustainability data input formats, units, and verification processes to avoid manual aggregation errors.

If you want to quickly and compliantly complete your sustainability report, feel free to consult us. We provide the Syber Sustainability Management System, with built-in latest domestic and international regulatory frameworks and content including GRI, SASB, TCFD, IFRS S1 & S2, and AI collaboration integration, completing your desired sustainability report in one stop.

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