What Is a Letter of Inquiry for Grants?

Every year, funders receive massive numbers of grant applications from nonprofit organizations across the country. To manage the large volume of requests, many grantmakers have adopted a two-stage process that begins with a letter of inquiry (LOI).

A letter of inquiry serves as your organization's elevator pitch in written form. In just one to two pages, you must capture a funder's attention, demonstrate alignment with their priorities, and convince them that your project deserves an invitation to submit a full proposal. Creating an effective LOI is a challenging task that requires strategic thinking, clear communication, and a deep understanding of what funders are seeking.

Whether you're new to grantwriting or looking to improve your success rate, understanding the nuances of the LOI process is essential. This guide provides nonprofit organizations with the knowledge needed to create compelling letters of inquiry that open doors to funding opportunities and increase the likelihood of securing financial support.

Letter of Inquiry 101

A letter of inquiry is a brief, formal document that nonprofit organizations send to a funder to introduce a proposed project and request permission to submit a full proposal. Sometimes called a letter of interest, letter of intent, or concept paper, depending on the grantor, an LOI serves as an initial screening tool in the grant application process.

The primary purpose of an LOI is to provide a concise overview of your nonprofit organization, your proposed project, and how it aligns with the funder's priorities. This preliminary document allows both parties to determine whether there's a good fit before investing additional time and resources in developing a comprehensive grant proposal.

When and Why Funders Request an LOI

Many funding sources, particularly private foundations and corporate funders, require an LOI as their first step in the grantmaking process. This approach benefits both the funder and the nonprofit organization in several ways.

For funders, an LOI helps them quickly assess whether a project aligns with their priorities without reviewing lengthy full grant proposals. This screening process allows grantmaking staff to focus their attention on projects that best match their mission and geographic area of interest.

For nonprofit organizations, submitting an LOI allows them to gauge funder interest before investing substantial time in grant writing. Rather than spending weeks developing a comprehensive proposal that may not align with the funder's current priorities, nonprofits can test the waters with a brief description of their proposed project.

Essential Components to Include

An effective LOI should be concise yet descriptive. Your letter should include the following key components:

Brief Introduction: Devise a compelling opening that immediately captures the funder's attention. Follow this with a brief overview of your nonprofit organization, including your mission, history, and key accomplishments. This section should establish your credibility and demonstrate your organization's capacity to successfully implement the proposed project.

Project Description and Statement of Need: Provide a clear, concise project description that outlines what you plan to accomplish. Consider including a problem statement that identifies the specific need your project will address. Explain your methodology and how your project staff will implement the initiative.

Alignment with Funder Priorities: Demonstrate how your proposed project aligns with the funder's mission and funding priorities. This section should show that you've thoroughly researched the funder and understand their grantmaking ideals.

Budget Information: Include the total project budget and the specific amount of requested funding. While you don't need to provide a detailed budget breakdown in the LOI, grantees should be clear about their financial needs.

Contact Information and Closing: Provide complete contact information. End with a professional thank-you statement expressing appreciation for the funder's consideration of your request.

Tips for Writing an Effective LOI

Research is a key component of successful grant writing. And this is also true for letters of inquiry. Before drafting your LOI, thoroughly investigate the funder's priorities, recent grants, and application guidelines. Many funders provide a letter of inquiry template or specific formatting requirements that you must follow precisely.

Keep your writing clear, concise, and compelling, typically spanning one to two pages. Avoid jargon or overly technical language that might confuse readers who aren't experts in your field. Focus on outcomes and community impact rather than internal organizational processes. Your LOI should tell a story that connects with the funder's values and demonstrates the potential for meaningful change.

Ensure that your letter maintains a professional tone throughout while remaining engaging and accessible. Use concrete examples and data to support your statements whenever possible, and make sure every paragraph serves a specific purpose in advancing your case for funding.

Common Mistakes to Avoid

Several common pitfalls can undermine well-intentioned LOIs. First, avoid making your letter too long or unfocused. Funders appreciate brevity and clarity, so respect their time by staying within recommended length limits.

Failing to tailor your LOI to the specific funder is another common mistake. Generic letters that could be sent to any grantor imply a lack of research. And they don’t convey a genuine interest in partnership. Each LOI should be customized to demonstrate a thorough understanding of the funder's history, priorities, and approach.

Don't skip important details like your specific funding request amount or key project information. While an LOI should be brief, it must still provide sufficient detail for funders to make an informed decision about inviting a full proposal.

Finally, always proofread your letter carefully and include any required attachments. Errors in spelling, grammar, or formatting can create a negative first impression that undermines your organization's credibility.

What Happens After You Send an LOI

Following your LOI submission, funders typically respond in one of three ways. They may invite you to submit a full grant proposal, request additional information before making a decision, or decline your request. Response times vary significantly among funders, ranging from a few weeks to several months.

Even if a funder declines your LOI, view this as an opportunity to build relationships and gather feedback. Some funders provide specific reasons for their decision, which can help you improve future submissions. Maintaining professional relationships with funders who decline your current request may lead to future funding opportunities as their priorities—and your organization—evolve.

Keep detailed records of your LOI submissions, including dates, funder responses, and any feedback received. This information helps you track your grant pipeline and identify patterns in successful and unsuccessful approaches.

Creating a Successful Calling Card

A well-crafted letter of inquiry serves as your nonprofit's calling card in the competitive world of fundraising. By understanding the LOI process and following best practices for content and presentation, your organization can make a strong first impression with potential funders and increase your chances of securing invitations to submit full proposals.

Remember that an effective LOI balances brevity with substance, demonstrates clear alignment with funder priorities, and presents your organization as a capable and trustworthy partner. With careful research, thoughtful preparation, and attention to detail, your nonprofit can master this crucial first step in the grant application process.

FAQs

How long should a letter of inquiry be? Most LOIs should be one to two pages long, unless the funder specifies different requirements. Focus on being concise while including all essential information.

Can I use the same LOI for multiple funders? While you can use a basic LOI template, each letter should be customized for the specific funder. Generic letters are easily recognized and often rejected.

What if a funder doesn't require an LOI? Some funders accept full proposals directly. However, you may still consider sending a brief inquiry to gauge interest before investing time in a comprehensive application.

Should I include attachments with my LOI? Only include attachments if specifically requested by the funder. Most LOIs should be self-contained documents that don't require additional materials.