How to Write a Letter of Inquiry (LOI)
Published June 12, 2026 · WinMyGrant
A letter of inquiry is your foot in the door with a funder. Here's how to write a one-page LOI that earns an invitation to apply.
Skip the blank page — draft a funder-ready proposal in 60 seconds.
Try WinMyGrant free →The Letter of Inquiry (LOI) is often the first, and sometimes only, thing a funder will read from your organization. It’s a crucial stepping stone, a gatekeeper to the full proposal. Many funders use LOIs to significantly reduce the volume of applications they review, saving time and resources. Think of it as a concise, compelling pitch – a way to quickly demonstrate that your project aligns with their priorities and is worth considering for a larger investment. After two decades helping organizations secure funding, I’ve seen countless LOIs, and the difference between those that get a “yes, submit a full proposal” and those that are ignored is often surprisingly small. This article will equip you with the knowledge and practical steps to craft LOIs that open doors.
Understanding the Purpose of an LOI
Before diving into the structure, let’s solidify why funders request LOIs. It’s not just about weeding out unqualified applicants. They’re looking to:
- Assess Alignment: Does your project genuinely fit within their funding areas and strategic goals?
- Gauge Feasibility: Is your project realistic, well-planned, and likely to achieve meaningful results?
- Evaluate Impact: What problem are you addressing, and how significant is the potential impact of your work?
- Determine Fit with Current Portfolio: Are they already funding similar work? If so, is there room for another project, or would yours be redundant?
- Save Time: Reviewing a 1-2 page LOI is far less time-consuming than a 20-30 page proposal.
Remember, the LOI isn’t a miniature proposal. It's an invitation to learn more. Your goal is to spark their interest, not to provide every detail.
The Core Components of a Winning LOI
While specific requirements vary (always, always check the funder’s guidelines!), most effective LOIs include these elements:
1. Organizational Background (Briefly!)
In 2-3 sentences, establish your organization’s credibility. Highlight your mission and a key accomplishment. For example: "The Green Valley Food Bank has served the community for 15 years, providing emergency food assistance to over 5,000 families annually. Last year, we successfully launched a mobile food pantry program reaching underserved rural areas." Avoid lengthy histories; focus on relevance.
2. Project Summary (The Heart of the LOI)
This is where you make your case. Typically 3-5 paragraphs, it should cover:
- The Problem: Clearly articulate the issue you’re addressing. Use data to illustrate the need. Instead of “Many children in our community struggle with literacy,” try “35% of third graders in Green Valley County read below grade level, according to recent state assessments.”
- Your Proposed Solution: Describe your project and how it will address the problem. Be concise and focused. “We propose to implement an after-school tutoring program targeting at-risk third graders, providing individualized literacy support.”
- Key Activities: Briefly outline the main activities. “The program will include one-on-one tutoring sessions with certified teachers, literacy-rich books, and family engagement workshops.”
- Expected Outcomes: What measurable changes will result from your project? “We anticipate that 75% of participating students will improve their reading scores by at least one grade level within one year.”
3. Project Budget (High-Level)
Funders need to know if your project is financially realistic. Provide a total project cost and the amount you are requesting from *this* funder. For example: "The total project cost is $50,000. We are requesting $20,000 from the [Funder Name] to support tutor salaries and program materials." Don’t include a detailed budget breakdown in the LOI; that’s for the full proposal. If you have secured other funding, mention it briefly: “This project is also supported by a $10,000 grant from the Community Foundation.”
4. Alignment with Funder Priorities
This is *critical*. Explicitly connect your project to the funder’s mission and funding priorities. Don't assume they'll make the connection themselves. Refer to their website, annual reports, or guidelines. For example: "This project aligns with [Funder Name]'s commitment to improving educational outcomes for underserved youth, specifically their focus on early literacy interventions."
5. Contact Information
Include the name, title, email address, and phone number of the person the funder should contact with questions. Ensure this person is readily available and knowledgeable about the project.
Tips for Polishing Your LOI
Beyond the core components, these tips can significantly increase your chances of success:
- Follow Instructions Precisely: This seems obvious, but it’s often overlooked. If the funder asks for a one-page LOI, submit a one-page LOI. If they require a specific font or margin size, adhere to it.
- Use Clear, Concise Language: Avoid jargon, technical terms, and overly complex sentences. Write as if you're explaining your project to someone unfamiliar with your field.
- Focus on Impact: Funders want to see that your project will make a difference. Emphasize the positive outcomes and the beneficiaries of your work.
- Proofread Carefully: Errors in grammar, spelling, and punctuation can undermine your credibility. Have someone else review your LOI before submitting it.
- Tailor Each LOI: Don’t use a generic template. Customize each LOI to the specific funder and their priorities. This takes time, but it demonstrates that you’ve done your research and are genuinely interested in their support.
- Think Visually: If allowed, consider including a compelling image or chart to illustrate your project or the problem you’re addressing.
- Be Realistic: Don’t overpromise or exaggerate your potential impact. Funders appreciate honesty and transparency.
What Happens After You Submit?
Be patient. Funders receive a high volume of LOIs, and it may take several weeks or even months to receive a response. If you haven’t heard back after a reasonable amount of time (check the funder’s guidelines for their typical response time), it’s acceptable to send a polite follow-up email. However, avoid being pushy or demanding.
A rejection doesn’t necessarily mean your project is unworthy. It could simply mean that it doesn’t align with the funder’s current priorities or that they have limited funding available. Don’t be discouraged. Use the feedback you receive (if any) to improve your LOI and target other funders.
Mastering the LOI is a skill that pays dividends. It's about strategic communication, concise storytelling, and demonstrating the value of your work. By following these guidelines and tailoring your approach to each funder, you’ll significantly increase your chances of securing the funding you need to make a lasting impact.
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