New Client & Supplier Due Diligence Checklist (2026)

Returning from a trade show with dozens of business cards often brings immediate commercial opportunities: three prospective clients want to place orders right away, and two local firms are offering to become new suppliers. However, signing deals based purely on gut feeling is risky. Researching each entity manually takes hours, but skipping due diligence opens the door to ghost companies, insolvent suppliers, or legal disputes.

This guide condenses company background research into an actionable due diligence checklist. Each step focuses on a single database, clear criteria, and immediate red flags to check off.

Disclosure: This article is published by the Card2Gold team. We outline standard, free manual lookup procedures using public government portals. Our automated company research tool offers a 1-click alternative for running these background checks. Official government database capabilities and feature specifications reflect information available as of August 2026.

Here is the complete due diligence overview before breaking down each step. Verifying a single company manually takes roughly 10 to 15 minutes:

Step	Portal / Source	Verification Checklist Item
1. Gather Details	Business Card / Email	Full legal company name, Tax ID (GUI Number), and Representative Name
2. Check Active Status	GCIS Commercial Registry	Company Status reads Existing / Active ("核准設立")
3. Assess Health	GCIS Commercial Registry	Paid-in capital and business scope align with contract scope
4. Review Litigation	Judicial Yuan Court Search	No major lost lawsuits, payment defaults, or tax liabilities
5. Scan Media & Credit	News Search & Credit Reports	No reports of bounced checks, fraud, or financial distress
6. Examine Network	GCIS Board of Directors	Representative is not associated with multiple shell entities

Save this table as a quick reference for the next batch of business cards you collect. Below is the detailed breakdown for each of the six steps.

Step 1: Gather Three Key Company Identifiers

Before opening any government database, review the business card or correspondence to ensure you have three basic details:

• Full Legal Company Name (including legal entity suffixes like "Co., Ltd." or "Corporation")
• Tax ID Number (Unified Business Number / UBN / GUI Number in Taiwan)
• Legal Representative Name (Chairman, President, or General Manager)

These three pieces of information serve as your search inputs across all official registries. While business cards always feature names, Tax IDs are sometimes omitted. If you only have the company name, step two will help you locate the official Tax ID. If the business card only shows a trade brand rather than the registered corporate entity name, flag it for key-phrase testing during the search process. Step Checklist: Confirm you have at least the full legal company name or Tax ID, along with the owner or representative's name.

Step 2: Confirm the Company Is Currently Active

Navigate to the Global Commercial Information System (GCIS) hosted by Taiwan's Ministry of Economic Affairs. Input the company name or Tax ID and inspect one primary field: Company Status (公司狀態).

The registry status should indicate Existing / Active ("核准設立"). If the status displays Dissolved ("解散"), Revoked ("撤銷"), Cancelled ("廢止"), or Suspended ("停業"), the entity is no longer legally operational. Pause negotiations immediately and request clarification.

Record the following details into your notes:

• Official Tax ID Number


• Legal Representative Name


• Registered Business Address


• Registration Approval Date

Use the registration date to calculate the company's age. A firm established just three months ago requesting a million-dollar credit line requires significantly higher scrutiny than an established business.

For a step-by-step breakdown on decoding official registry records, read our guide on Taiwan Tax ID & Business Registration Lookup.

Step Checklist: Status is verified as "Existing / Active", and company age is consistent with their market claims.

Step 3: Evaluate Corporate Health and Scope

On the same GCIS registry page, review three core financial and operational indicators: Total Capital Stock, Paid-in Capital, and Registered Business Items.

• Paid-in Capital: While higher capital does not guarantee operational integrity, placing an order that vastly exceeds a company's paid-in capital introduces financial risk. For suppliers, a factory with minimal paid-in capital taking on a large purchase order poses potential fulfillment and capacity risks.
• Registered Business Scope: Does the company's registered line of business match the goods or services they are selling? If a firm registered solely for industrial hardware sales offers digital marketing services, confirm whether they are sub-contracting or acting as an unauthorized agent.
• Years in Operation: Derived from the registration date. Established businesses generally have higher reputational stakes than newly formed entities.

Step Checklist: Paid-in capital aligns with the order value, and registered business categories match actual services.

Step 4: Check Legal Disputes and Court Records

Skipping court searches is a common mistake that can obscure past commercial failures. Access the Judicial Yuan Legal Decisions Database and search using the full legal company name.

Pay attention to three specific areas:

• Is the company regularly named as a defendant in payment default cases ("給付貨款" or "票款")?


• Are there recent court rulings requiring substantial monetary compensation?


• Has litigation volume spiked over the last 12 to 24 months?

Court records reflect formal legal proceedings and serve as major risk indicators. To learn how to distinguish standard commercial disputes from severe financial distress, read our guide on How to Search Taiwan Court Records & Judgments.

Step Checklist: Search reveals no systemic payment defaults, unfulfilled contract claims, or severe legal rulings.

Step 5: Scan for Negative News and Credit Red Flags

Court records document finalized disputes, but early warning signs often surface first in media coverage and payment credit records:

• Search both the company name and representative name paired with keywords such as bounced check, fraud, unpaid debt, or lawsuit. Omit legal suffixes like "Co., Ltd." during keyword searches to increase match precision.
• If the transaction involves accepting promissory notes or deferred payment terms, verify the issuer's commercial payment record to prevent dishonored checks.

Rule of Thumb: If negative media coverage appears—even a single report—raise the topic directly with the partner before extending credit terms. Step Checklist: Public search yields no reports of payment defaults, contract fraud, or severe operational controversy.

Step 6: Review Directors and Corporate Affiliates

Finally, examine leadership structures. GCIS corporate filings list major shareholders, directors, and supervisors. Use the representative's name to cross-reference other registered entities under their control.

This check exposes two critical insights:

• Risk Indicator: The representative holds titles across numerous inactive shell companies.


• Commercial Opportunity: The representative leads a wider corporate group with additional cross-selling or procurement opportunities.

For a complete deep dive into company background checks in Taiwan, read our cornerstone article: How to Verify a Taiwan Company Before Doing Business.

Step Checklist: The representative is not linked to multiple shell entities, and the ownership structure is straightforward.

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Manual Verifications vs. 1-Click Company Research

All six steps above can be completed manually using free public databases. However, checking each company requires switching between GCIS corporate lookup portals, Judicial Yuan court databases, news search engines, and corporate registry lists—taking 10 to 15 minutes per lead.

If you handle one or two lookups a week, manual verification using this checklist works well. But if your sales reps return from trade shows with hundreds of cards, or your procurement team frequently evaluates multiple vendors under tight deadlines, manual verification creates bottlenecks.

Card2Gold speeds up this workflow by automating intelligence lookups. When you scan a business card, Card2Gold's company research feature queries five core sources—GCIS registries, court judgments, news reports, company websites, and social profiles—consolidating background records into an instant report powered by Google Gemini AI.

Factor	Manual Checklist Verification	Card2Gold Company Intelligence
Data Sources	Individual official sites & web queries	Integrated 5-source check (GCIS, Court, Web, News, Social)
Workflow	Manual site-by-site lookup & data entry	1-click lookup from business card scan
Speed per Check	~10–15 minutes per company	Instant automated summary
Best Used For	Occasional lookups (1–2 per week)	High-volume checks after trade shows & events

Whether running checks manually or using automated research, save this checklist to verify every new client or vendor systematically.

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