A concept note is a short document that presents the core logic of a proposed project before a donor asks for, or reviews, a full proposal. It usually explains the problem, target group, proposed solution, expected results, organizational fit, timeframe and an indicative budget at a high level.
If someone asks for a “letter of concept,” first check the donor’s exact wording. That phrase is not a universal grant term. In practice, donors are more likely to ask for a concept note, concept paper, letter of inquiry (LOI), expression of interest (EOI) or another first-stage document. The safest rule is simple: use the donor’s own label and template.
Why donors use concept notes
Concept notes help donors screen ideas before asking applicants to invest time in a detailed proposal. In a two-stage process, the concept note is often the first decision gate: the donor is deciding whether the project is sufficiently relevant, credible and feasible to justify a full application.
This is not just theory. The U.S. Department of State’s former PRM concept-note process explicitly used concept notes as a first stage before selected applicants were invited to prepare full proposals. More recently, UNHCR Kenya has used an EOI process that requires applicants to upload a project concept note and supporting evidence.
What should a concept note include?
There is no universal template. If the donor provides questions, a form, a page limit or a mandatory structure, follow those instructions exactly. Where no template is supplied, a strong concept note usually covers the following:
- The problem: What is happening, where, to whom, and why does it matter?
- The evidence: What credible data or field evidence shows the problem is real?
- The proposed response: What will your organization actually do?
- The target population: Who will benefit and how many people are likely to be reached?
- The expected results: What should change if the project succeeds?
- The organization’s role: Why is your organization positioned to deliver this work?
- Timeframe: How long will implementation take?
- Indicative budget: What is the approximate project cost or funding request?
Current NGO guidance from NGOPortal similarly emphasizes need, proposed solution, beneficiaries, geography, objectives, activities, expected results, duration, organizational experience and indicative budget. The exact depth varies by funder.
A concept note is not simply a shortened proposal
One of the most common mistakes is taking a 15-page proposal and compressing every section into two pages. That usually produces a crowded document with no clear decision logic.
A concept note should answer the funder’s first-stage questions: Is the problem relevant? Does the proposed response make sense? Is the organization credible? Is the scale realistic? Does the idea fit the donor’s priorities well enough to justify deeper review?
How long should a concept note be?
There is no single correct length. Published guidance and donor calls vary widely. Some concept notes are only a few pages; others use structured online forms. UNHCR Kenya’s 2026 EOI example capped the concept note at five pages. The donor’s own instructions always override general advice.
A simple concept-note structure
- Project title and one-sentence summary
- Problem and evidence
- Target group and location
- Goal and 2–4 objectives
- Key activities or approach
- Expected outputs and outcomes
- Organizational capability and partners
- Duration and indicative budget
- Why the idea fits this donor
What strong concept notes do differently
Strong concept notes are specific enough to be credible but concise enough to be screened quickly. They use evidence selectively, connect activities to expected results, avoid inflated promises and make the funding logic easy to follow.
They also avoid inventing detail that has not yet been validated. If the organization does not have baseline data, partner commitments or confirmed costs, the concept note should not imply that it does.
What to do before writing
Before drafting, read the funding call and decide whether the opportunity fits your organization. Africads’ Should We Apply? Grant Checker can help teams test fit before spending time on the application.
If the idea is still weak, use the Program Fundability Checker to identify design gaps before turning the project into donor-facing language.
Free Concept Note Template
Start with a practical concept-note structure, then adapt it to the donor’s exact questions, page limits and terminology.
Frequently Asked Questions
Is a concept note the same as a letter of inquiry?
Not always. They often serve a similar first-stage screening purpose, but an LOI is usually written in letter form while a concept note is normally structured as a short project document. Use the donor’s terminology.
Is a “letter of concept” a real grant document?
The phrase is used informally in some contexts, but it is not a universal standard. Clarify whether the funder means a concept note, concept paper, LOI or EOI.
Can I send a concept note when a donor has not asked for one?
Only if the donor accepts unsolicited approaches. Many funders have specific application routes and may not review unsolicited material.
Does a concept note need a full budget?
Often it uses an indicative or summary budget, but some donors require a detailed format even at first stage. Follow the call.
Should I use the same concept note for several donors?
No. The underlying project can stay consistent, but the framing should reflect each donor’s priorities, eligibility rules and required format.
Conclusion
A concept note is a decision document, not just a shortened proposal. Its job is to help a donor understand the problem, the proposed response, the organization’s credibility and the fit quickly enough to decide whether deeper review is worthwhile. When terminology is unclear—especially phrases such as “letter of concept”—follow the donor’s exact instructions rather than assuming two documents are interchangeable.
Sources and further reading
- UNHCR Kenya: Call for Expression of Interest
- U.S. Department of State: FAQ on Concept Notes
- NGOPortal: How to Prepare an NGO Concept Note
Need help turning a validated project idea into donor-ready application documents? GrantsWriterAI can help structure drafts while your team remains responsible for accuracy, evidence and donor compliance.
