Procurement compliance does not end with collecting quotations. NGOs also need reasonable assurance that the selected supplier is legitimate, capable and free from obvious conflicts or integrity concerns. Supplier due diligence helps reduce fraud, delivery failure and donor compliance risk.
Confirm the supplier’s identity
Check the legal or business name, registration details, tax information where relevant, contact information and bank account ownership. The entity receiving payment should match the supplier that was evaluated and contracted unless there is a documented legitimate reason.
Check capability to deliver
Review experience, technical capacity, delivery timeframe, staffing and references where proportionate to the purchase. For high-value or specialized procurement, a low price should not outweigh clear evidence that the supplier cannot perform.
Screen for conflicts of interest
Staff involved in the procurement should declare any personal or financial relationship with bidders. A conflict does not always mean the supplier must be rejected, but it must be disclosed and managed transparently.
Review donor-specific restrictions
Some donors require sanctions screening, restricted-party checks, geographic sourcing rules or prior approval for certain purchases. Build these requirements into the procurement file instead of treating them as a separate afterthought.
Use risk-based checks
The depth of due diligence should reflect the value and risk of the contract. A small routine purchase may need basic verification, while a large construction, technology or consultancy contract may require stronger checks, references and documented financial capacity.
Practical supplier checklist
- Legal identity confirmed.
- Bank details verified.
- Tax or registration records checked where applicable.
- Capability and references reviewed.
- Conflict-of-interest declarations completed.
- Required sanctions or restricted-party screening completed.
- Selection decision documented.
For the wider purchasing process, see grant procurement rules for NGOs.
Example
An NGO receives the lowest quotation from a company that cannot provide a valid business address or demonstrate prior experience with the required equipment. The evaluation team should not ignore those concerns simply because the price is attractive. Due diligence helps document why another supplier may represent better value and lower risk.
What to do next
Use the Award Absorption Capacity Check to identify whether your procurement and contract-management systems are ready for a larger award.
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Document ownership and related parties
For higher-risk procurement, ask whether the supplier is owned or controlled by staff, board members, relatives or other related parties. A related-party relationship may require disclosure, additional approval or exclusion depending on policy and donor rules.
Keep the due-diligence record proportionate. The goal is not to create unnecessary paperwork for every small purchase, but to have enough evidence to show that material contracts were awarded responsibly.
Document ownership and related parties
For higher-risk procurement, ask whether the supplier is owned or controlled by staff, board members, relatives or other related parties. A related-party relationship may require disclosure, additional approval or exclusion depending on policy and donor rules.
Keep the due-diligence record proportionate. The goal is not to create unnecessary paperwork for every small purchase, but to have enough evidence to show that material contracts were awarded responsibly.
For repeat suppliers, do not assume an old due-diligence check remains sufficient forever. Refresh key information when contracts become larger, ownership changes, performance problems arise or donor requirements change. A supplier that was low risk two years ago may no longer present the same profile today.
Keep the due-diligence record with the procurement file so future reviewers can see not only who was selected, but why the organization believed the supplier was suitable at the time of award.
For high-value contracts, consider documenting a scheduled supplier review after award as well. Due diligence before contracting is useful, but ongoing performance, ownership or compliance concerns may still emerge later.
Frequently asked questions
What should supplier due diligence cover?
Review legal identity, ownership, contact details, bank information, capacity, references, conflicts, and any required sanctions or compliance checks.
Does every supplier need the same level of due diligence?
No. The depth should be proportionate to contract value, risk, sensitivity, and donor requirements.
Who should perform the checks?
Procurement can coordinate them with finance, compliance, legal, or technical staff where relevant.
What is a common warning sign?
Inconsistent company details, unverifiable references, undisclosed relationships, unusual bank instructions, or weak delivery history should trigger further review.
Should due diligence be repeated?
Yes for long-term or high-risk suppliers when material information changes or before significant contract renewal.
Conclusion
Supplier due diligence should reduce avoidable procurement risk before money is committed. Your NGO should verify identity, capacity, conflicts, and payment details in proportion to the value and sensitivity of the purchase.
Put this guide into practice
Free resource: The Funding Checklist. Use this free guide to apply the article’s advice to your next funding decision or application.
Optional paid resource: Nonprofit Grant Proposal Templates. Proposal, concept note, budget, logframe, M&E and donor-document starting points. Review the product details and current price before purchasing.
