Why vetting costs less than fixing
Most failed international purchases are not caused by bad luck. They come from a supplier who was never properly checked: a trading company presented as a factory, a license that did not cover the goods, a sample that production never matched, or a deposit sent to the wrong account. Supplier due diligence is the set of checks that makes these outcomes less likely before money or goods move.
The effort should match the exposure. A sensible approach uses three tiers. Tier 1, a desk check of identity and documents, applies to every candidate. Tier 2, samples, references and a live video visit, applies to finalists. Tier 3, an independent audit or inspection, applies when the order is large, recurring, safety-critical or paid in advance. This article follows that order and fits into the wider global sourcing process.
The five layers of supplier vetting
Work through the layers in order. A failure at any layer is a reason to stop or to ask for more evidence.
Identity: does this legal entity exist?
Confirm the registered name, number, address and status against an official source, not just the copy the supplier sent.
Capability: can it make this product?
Check equipment, workforce, capacity, similar products already made, current customers and realistic lead times against your volume.
Quality: will production match the sample?
Evaluate samples, test reports, the quality system and how the supplier handles defects.
Compliance and reputation
Check certificates, sanctions screening, any social or environmental requirements you have, and the supplier’s track record with other buyers.
Commercial terms: can you pay safely?
Agree the payment method, contract and remedies, and judge whether the supplier is financially able to deliver.
Documents to request from every finalist
Ask for these before you invest time in negotiation. Reluctance to provide ordinary documents is information in itself.
- Business license or certificate of incorporation showing registered name, number and address
- Tax or VAT registration, and the export license or registration where one applies
- Licensed activity or scope of business that covers your product
- Management and quality certificates relevant to your goods, such as ISO 9001, with the issuing body’s name
- Product test reports or conformity certificates for your destination market
- Factory address, equipment list and production capacity
- Bank details that match the registered company name, ideally with a bank letter
- Brand authorization letter if the goods are branded
- Customer references from your region or industry
- Insurance and, where relevant, product liability cover
Verify, do not just collect
A document the supplier sends you proves only that the supplier can send a document. Verify it with the issuing source. Search the official company register in the supplier’s country and compare the registered name, number, address, status and listed activities. In China, for example, the business license shows an 18-character unified social credit code that can be checked in the official enterprise information system. In the UAE, the trade license can be confirmed with the issuing authority, whether a free zone or an emirate’s economic department. Many national registers are public; some are free and others charge a fee for extracts.
Then cross-check the details against each other. The name on the license should match the invoice, the contract and the bank account. Look up the address on a map, and use a live video call to see the premises, equipment and people at work, rather than a pre-recorded video. A free webmail address, a very recently registered website domain, stock photography and a catalog spanning unrelated product categories all call for closer questions. For certificates, check with the issuing certification body or its public database when one exists. A certificate that cannot be traced is not evidence.
Samples, references and test reports
A sample shows what a supplier can do, not what it will do in volume. Ask for a pre-production sample first, approve it in writing against the specification, and keep a sealed reference piece (often called a golden sample) to compare production against. Where safety or regulation matters, have an accredited laboratory test the sample instead of relying on the supplier’s own report.
References are worth more when they are checkable. Ask for two or three customers, ideally in your region or industry, and contact them using details you found independently. Ask specific questions: was delivery on time, how were defects handled, and did quality hold after the first order?
Third-party audits and inspections
When the order justifies the cost, hire an independent firm that you pay yourself, not one the supplier recommends. Typical services include a factory audit (identity, capacity, quality system, working conditions), a pre-production check of materials and components, an in-process inspection and a pre-shipment inspection. In the last, inspectors draw a random sample from the finished goods and count defects against an agreed acceptance level, often set using AQL tables based on ISO 2859-1. Some buyers add loading supervision to confirm that the right goods go into the container.
An inspection is only useful if the criteria are agreed in advance. Put the specification, defect classes (critical, major, minor), sample size and acceptance level into the contract or purchase order, and state that the balance payment follows a passed inspection. For help scoping a vetting program, see our trade consultation service.
Red flags that justify stopping
One flag may have an innocent explanation. Several together rarely do.
A price far below every other quote
Unrealistic pricing often means different materials, hidden costs, or a supplier who wants your deposit more than your business.
Pressure to pay quickly
Deadlines such as “price valid today” paired with a prepayment request are a classic pattern.
Unusual payment instructions
Personal accounts, accounts in a third country, or bank details that change by email. Confirm any change by phone using a number you found independently.
Avoids video calls, audits or samples
A genuine producer is usually keen to show its factory. Repeated excuses are informative.
Inconsistent documents
Names, addresses or dates that do not match across the license, invoice and bank account.
Vague about what it is
Cannot say whether it is a manufacturer or a trader, offers an unusually wide range, or will not name the factory.
Payment methods and who carries the risk
Payment terms decide who bears the risk between payment and delivery. The more you pay before the goods ship, the more you depend on the supplier’s honesty and solvency, so scale your checks to match.
Full advance payment
Simplest and often cheapest, but the buyer carries all the risk. Reserve it for small amounts or suppliers with a proven record.
Deposit plus balance
A deposit at order and the balance against a passed inspection or copies of shipping documents. Common in manufacturing; the size of the deposit is your exposure.
Letter of credit
A bank commits to pay the seller against compliant documents, commonly under the ICC’s UCP 600 rules. It protects both sides but costs more, and banks examine documents, not the goods.
Documentary collection
Banks release documents to the buyer against payment or acceptance. Cheaper than a letter of credit, but without a bank payment undertaking.
Open account
Goods ship first and payment follows on agreed credit terms. This favors the buyer, so suppliers usually grant it only after a track record.
Protecting the payment itself
Whatever the method, pay only to an account in the supplier’s registered name, verify the details by phone, tie payments to milestones you can check, and keep records of every instruction. Where the contract allows, withhold the final payment until the goods pass inspection. Payment platforms or escrow services that hold funds until delivery is confirmed can reduce exposure further, but read their dispute rules first and do not assume a platform badge replaces your own checks. For Dubai-based suppliers specifically, our guide to importing from Dubai covers license and bank-account checks.
Worked example: a simple supplier scorecard
Scoring turns judgment into something comparable. This is an illustrative example with hypothetical weights and scores (1 = poor, 5 = excellent) for two finalists. Adjust the weights to your own priorities, and agree them before you see the results.
At a glance
- Weights: compliance and documents 20%, product quality 30%, capacity and lead time 15%, commercial terms 20%, communication and references 15%
- Supplier A scores 4, 3, 4, 5 and 3: (0.20 x 4) + (0.30 x 3) + (0.15 x 4) + (0.20 x 5) + (0.15 x 3) = 3.75
- Supplier B scores 5, 4, 3, 3 and 4: (0.20 x 5) + (0.30 x 4) + (0.15 x 3) + (0.20 x 3) + (0.15 x 4) = 3.85
- A is cheaper and offers better terms, but B’s stronger quality and compliance place it slightly ahead
- Add a knockout rule: any unresolved identity or compliance red flag disqualifies a supplier whatever its score
Compliance and legal note
Screen suppliers, their owners and the intended end use against the sanctions and export-control lists that apply to you, and keep a record of the check. This article is general information and not legal or tax advice. Consult a qualified adviser for contracts, payment instruments and regulated goods.
Getting help with vetting
Vetting takes time and local knowledge, which is why many importers delegate part of it. Supplier identification is one of GOLDVESTRA’s services, and the sourcing assessment is the second stage of its five-stage process. Vetting also pairs naturally with correct paperwork; our trade documentation checklist shows which documents to expect once the supplier is chosen. Services are provided where legally permissible.
Frequently asked questions
How much due diligence is enough?
Match the effort to the exposure. A desk check suits every candidate, samples and references suit finalists, and an independent audit or inspection suits large, recurring, safety-critical or prepaid orders. The more you pay before shipment, the more checking is justified.
Does a platform verification badge mean a supplier is safe?
A badge shows that the platform performed some checks, and their scope varies. It is not a guarantee. Treat it as one input and verify the company yourself.
Should I visit the factory in person?
For large or long-term supply, a visit or a commissioned audit is valuable. For smaller orders, a live video call that shows the premises, machinery and staff, combined with an independent pre-shipment inspection, is often a reasonable substitute.
What is the safest way to pay a new supplier?
No method is risk-free. For a first order, consider staged payments tied to verifiable milestones, payment only to the supplier’s registered company account, and an independent inspection before the balance is released. For larger values, a letter of credit may be worth its cost.
How do I check an ISO certificate?
Ask for the certificate number and the certification body’s name, then confirm it with that body, or in a public accreditation database where one exists. Check that the scope and site named on the certificate match the product and factory you are buying from.
What if the supplier turns out to be a trader, not a factory?
That is not necessarily a problem. Traders can offer assortment and small quantities. What matters is that they say so honestly, tell you who actually makes the goods, and can support quality claims with documents and inspection access.
Related reading and services
Supplier Identification
How suppliers are found, shortlisted and compared.
International Procurement
Support across the international buying function.
The Global Sourcing Process Explained
Where vetting fits in the eight-step process.
Import Cost Factors
Compare suppliers on landed cost, not unit price.
Need a supplier found or checked?
Tell us what you need to buy and where it needs to go. We will start with a sourcing assessment and follow with a commercial proposal.
