How to Write a Letter of Inquiry That Gets Nonprofits Invited to Apply
The letter of inquiry — often called an LOI — is one of the most underestimated documents in a nonprofit's fundraising toolkit. Many development professionals treat it as a formality, a brief warm-up before the "real" grant application. That's a costly mistake. For many foundations, the LOI is the first gate, and only the organizations that pass through it get invited to submit a full proposal. Write a weak LOI, and you'll never get the chance to make your full case. Write a compelling one, and you've already done half the work of winning the grant.
This guide walks you through exactly how to craft a letter of inquiry that grabs a program officer's attention, communicates your organization's value clearly, and earns that coveted invitation to apply.
Understand What a Letter of Inquiry Actually Is
Before you write a single word, it helps to understand the LOI's purpose from the funder's perspective. Foundations receive hundreds — sometimes thousands — of funding requests each year. The LOI process exists to help them efficiently screen out organizations that aren't a strong fit before investing time in reviewing lengthy proposals.
That means your LOI has one primary job: demonstrate fit and spark interest. It's not the place to tell your entire organizational story or list every program you've ever run. It's a strategic teaser — concise, focused, and compelling enough to make a program officer think, "I want to learn more about this."
Most LOIs run between one and three pages, though always check the funder's specific guidelines. Some foundations have strict word counts or structured templates. Ignoring these instructions is an almost guaranteed path to rejection, regardless of how strong your content is.
Research the Funder Before You Write a Single Word
The single biggest mistake nonprofits make with LOIs is sending generic letters to multiple funders with minimal customization. Program officers can spot a copy-paste job immediately, and it signals that your organization hasn't done its homework.
Before drafting your LOI, dig into the following:
- The foundation's mission and values — What language do they use to describe their work? Mirror that language thoughtfully in your letter.
- Their current funding priorities — Many foundations shift focus periodically. Make sure you're aligned with what they're funding now, not what they funded three years ago.
- Their recent grants — Review their 990 filings or grants database to understand the size, type, and geography of grants they typically award.
- Any stated preferences — Do they prefer to fund direct service or systems change? Established organizations or emerging ones? Specific populations?
Tools like CharityGrantWriter can significantly streamline this research phase, helping you identify funders whose priorities align with your mission and flag key details to incorporate into your LOI before you start writing.
The goal is to enter the writing process already knowing exactly why this funder is a strong match — and being able to articulate that clearly in your letter.
Structure Your LOI for Maximum Impact
A well-structured LOI follows a logical flow that moves the reader from context to need to solution to fit. Here's a proven framework:
Opening Paragraph: Hook and Connection
Start with a sentence that immediately establishes relevance. Don't open with "My name is Jane Smith and I am the Executive Director of..." — that's wasted space. Instead, lead with the problem you're solving or a brief, vivid statement about your work.
Example: "In rural Appalachia, one in four children goes to bed hungry each night — a crisis that Mountainside Food Network has been working to reverse for over a decade through community-based food distribution and nutrition education."
Then, in one or two sentences, make the explicit connection to the funder's priorities. Something like: "We are reaching out because your foundation's commitment to addressing food insecurity in underserved rural communities aligns directly with our mission and the project we are proposing."
The Problem Statement: Make It Real and Urgent
Briefly describe the problem or need your project addresses. Use local, specific data wherever possible — national statistics are less compelling than numbers that speak directly to the community you serve. Cite credible sources, but keep this section tight. Two to three sentences is often enough.
Your Solution: What You Do and Why It Works
This is where you describe your proposed project or program. Be specific about:
- What activities you will carry out
- Who will be served (numbers, demographics, geography)
- What outcomes you expect to achieve
- Why your approach is effective (evidence base, track record, community trust)
Avoid jargon and acronyms. Write as if the program officer has never heard of your organization — because they may not have.
Organizational Credibility: Why You
Funders don't just invest in ideas; they invest in organizations capable of executing them. In two to three sentences, establish why your nonprofit is uniquely positioned to do this work. Highlight relevant experience, key partnerships, staff expertise, or a proven track record with similar projects.
The Ask: Be Clear and Specific
State the amount you're requesting and what it will be used for. Vagueness here is a red flag. You don't need a full budget breakdown in an LOI, but something like "We are requesting $75,000 over two years to fund a full-time program coordinator, training materials, and community outreach activities" gives the program officer a clear picture.
Closing: Invite Next Steps
End with a brief, confident closing that thanks the funder for their consideration and invites further conversation. Offer to provide additional information and include your contact details.
Common LOI Mistakes That Lead to Rejection
Even well-intentioned LOIs get passed over because of avoidable errors. Watch out for these pitfalls:
- Being too vague — Phrases like "we help vulnerable populations" or "we make a difference in our community" say nothing. Be specific about who you serve and how.
- Burying the ask — Don't make the program officer hunt for what you're requesting. State it clearly.
- Overloading with information — An LOI is not a full proposal. Resist the urge to include everything. If you're invited to apply, you'll have that opportunity.
- Ignoring the funder's guidelines — Page limits, font requirements, submission portals — follow every instruction to the letter.
- Weak alignment — If you have to stretch to connect your work to the funder's priorities, it's probably not the right funder. Move on.
- Grammatical errors and typos — These signal carelessness. Always proofread, and have a colleague review before submitting.
Tailor Your Tone and Language to the Funder
Not all foundations communicate the same way, and your LOI should reflect an awareness of that. A community foundation focused on grassroots organizing may respond well to language that emphasizes equity, community voice, and systemic change. A corporate foundation might prefer language around measurable outcomes, efficiency, and return on investment.
Read the funder's website carefully. Pay attention to the words and phrases they use repeatedly. If they talk about "catalytic investment," use that framing. If they emphasize "evidence-based approaches," make sure you speak to your evidence base.
This isn't about being inauthentic — it's about speaking the funder's language so they immediately recognize your work as relevant to their goals. Development professionals who use platforms like CharityGrantWriter often find it easier to track funder-specific language patterns and customize their LOIs accordingly, especially when managing multiple applications at once.
After You Submit: What Comes Next
Submitting your LOI is not the end of the process — it's the beginning of a relationship. Here's how to handle the post-submission period professionally:
- Follow up appropriately — If the funder's guidelines don't prohibit contact, a brief follow-up email two to three weeks after submission is acceptable. Keep it short and professional.
- Track your submissions — Maintain a log of every LOI submitted, including the date, funder, amount requested, and expected response timeline. This is essential for managing your grant pipeline.
- Prepare for a "yes" — If you're invited to apply, move quickly. Have your organizational documents, financials, and program data ready to go so you can turn around a strong full proposal without scrambling.
- Learn from a "no" — If you're declined, consider reaching out to the program officer to ask if they're able to share feedback. Not all funders will respond, but some will, and that insight is invaluable.
Conclusion
A strong letter of inquiry is part strategy, part storytelling, and part relationship-building. It requires you to distill your organization's most compelling case into a tight, focused document that speaks directly to a specific funder's priorities. That's not easy — but it's absolutely learnable.
The nonprofits that consistently get invited to apply are the ones that treat the LOI as seriously as the full proposal. They research deeply, write specifically, and communicate with clarity and confidence. They don't try to be everything to every funder — they focus on fit and make a compelling case for why this project, from this organization, deserves this funder's attention.
Start with one funder, do the research, and write an LOI that could only have been written for them. That level of intentionality is what separates the organizations that get invited in from the ones that don't.