Search for a letter of intent grant template and you will find dozens of one-page samples that promise to work for any funder. They do not. The document a federal agency wants, the document a private foundation wants, and the document that no longer exists at all are three different things — and using the wrong one is a quiet way to get screened out before anyone reads your idea.

The split got sharper at the end of 2025. In notice NOT-OD-26-019, released December 3, 2025, the National Institutes of Health announced that “effective immediately NIH will no longer request or accept Letters of Intent (LOIs) as part of the application process.” At the same moment, the USDA’s flagship research program was still requiring one, with a hard clock attached. A template built for one of these worlds is useless in the other.

Why a reusable letter of intent grant template backfires

The appeal of a single template is obvious: write it once, send it everywhere. The problem is that “letter of intent” names at least three documents that share nothing but a salutation. A federal agency historically used the LOI as an internal planning tool to estimate reviewer workload. A pass-through or partner uses a letter of intent to commit staff time and resources to someone else’s project. A foundation uses a letter of inquiry to decide whether your project is even worth a full application.

Each of those readers is scanning for different signals. The agency wanted a project title, a rough scope, and your contact information. The foundation wants evidence that your mission, your need, and your budget are a fit for their giving priorities. A partner wants a precise statement of what they are agreeing to provide. Pour the same boilerplate into all three and at least two of them will read as if you did not understand the ask. For the practical mechanics of matching a document to a funder, our overview of managed grant writing support walks through how the same project gets framed differently for each audience.

The federal LOI is disappearing — read the NOFO before anything else

NIH’s removal of the LOI is the clearest signal that the federal template is a moving target. The agency explained that because peer review has been centralized under the Center for Scientific Review, the LOI “is no longer serving the same purpose to estimate ICO workload,” and that submitted letters “will not be acknowledged nor reviewed.” If you are applying to NIH, the correct letter of intent grant template is now no template at all.

Other agencies went the opposite way. For the FY2026 Agriculture and Food Research Initiative, USDA’s National Institute of Food and Agriculture requested a letter of intent by a firm deadline — 5:00 p.m. Eastern on February 26, 2026 — and applications that skipped it were not reviewed. The underlying rule is federal regulation, not preference: 2 CFR 200.204 requires every notice of funding opportunity to state whether a letter of intent or pre-application is required and when it is due. That single regulation is why the only reliable template lives inside the current federal grant opportunity you are actually chasing, not in a generic sample from three years ago.

What the federal version actually contains

When an agency still asks for one, the federal LOI stays short and administrative: the funding opportunity number, a descriptive project title, the names and institutions of the principal investigators, identification of any participating partners, and your contact details. There is no persuasion, no statement of need, and rarely a budget. It exists to help staff plan, which is exactly why NIH decided it no longer needed it.

The foundation letter of inquiry is a screening gate, not a formality

Private funders use the opposite logic. Where the federal LOI was an administrative heads-up, the foundation letter of inquiry decides whether you advance. Foundation staff frequently review fifty to a hundred of these per cycle and use them to cut the field before issuing full-proposal invitations. According to Candid’s guidance on writing letters of inquiry, the letter should function as a compressed proposal that touches every section a full application would — just briefly.

Length is part of the test. Most foundations expect one to three pages, with one and a half to two pages being the practical sweet spot. Northwestern University’s foundation relations guide frames the letter of inquiry as the document that earns the invitation, not the grant — its only job is to get you to the next round. Treating it as a formality and pasting in federal-style boilerplate is the fastest way to land in the no pile.

What belongs in the foundation LOI

A strong foundation letter of inquiry moves in a fixed order: a one-paragraph opening that names your organization, the amount requested, and the project in a sentence; a short statement of the problem backed by one or two real data points; your proposed solution and why your organization is credible to run it; the outcomes you expect; and a closing that invites the full proposal. Nonprofits applying this way can pressure-test their framing against our nonprofit grants resources before sending anything.

Three templates, side by side

Here are the three structures, stripped to their load-bearing parts. Pick the one that matches your funder, then replace the bracketed prompts with your specifics.

1. Federal / agency LOI (only when the NOFO requests one). Date and addressee from the NOFO. One line stating the funding opportunity number and title. One sentence naming the project and its goal. A list of principal investigators with institutions. A line naming partner organizations, if any. Your contact block. Keep it under a page; no budget, no persuasion.

2. Partner / commitment letter of intent. This is the document a collaborator signs for your application. It names the project, states exactly what the partner commits — staff hours, space, data, cash match, or in-kind services — and confirms the commitment is contingent on the award. The Office of Justice Programs application resource guide treats these partner letters and memoranda of understanding as evidence that named collaborators have actually agreed to participate, so vague language here can sink an otherwise strong application.

3. Foundation letter of inquiry. Opening paragraph: organization, amount, one-sentence project description. Paragraph two: the need, with data. Paragraph three: your solution and organizational capacity. Paragraph four: expected outcomes and rough budget scale. Closing: a direct request to submit a full proposal. One and a half to two pages.

How to adapt the template without getting filtered out

The mechanical step that separates funded applicants from rejected ones is boring: read the current instructions and mirror them exactly. Use the funder’s own terminology — if they say “letter of inquiry,” do not title yours “letter of intent.” Match their page limit, their requested sections, and their deadline to the minute. The regulation behind federal opportunities changes which template applies from one program to the next, and foundations revise their guidelines quietly, so last cycle’s winning letter is a starting draft, never a finished one.

Two habits protect you. First, download the live opportunity every time and compare it line by line against your draft, because a superseding notice like NIH’s can erase a requirement overnight. Second, keep your raw content — need, solution, outcomes, budget — in a single working document, then reshape it into whichever structure the funder demands. Researchers and founders tracking multiple deadlines can keep those opportunities organized inside the OpenGrants funding database so the right NOFO is always one click from the matching template.

Frequently Asked Questions

Is a letter of intent the same as a letter of inquiry?

Not quite. A letter of intent is often an administrative or commitment document — a federal agency planning tool or a partner’s pledge of support. A letter of inquiry is a foundation screening document, a short mini-proposal that determines whether you are invited to apply. Many funders use the terms loosely, so the safest move is to use whatever label and definition appear in the specific funder’s instructions.

Does NIH still want a letter of intent?

No. As of notice NOT-OD-26-019, released December 3, 2025, NIH no longer requests or accepts letters of intent, and any submitted will not be acknowledged or reviewed. The agency removed the requirement to reduce applicant burden after centralizing peer review. Always confirm against the current NOFO, but for NIH the default is now to skip the LOI entirely.

How long should a grant letter of intent be?

It depends on the type. A federal or partner letter of intent is usually under one page and purely factual. A foundation letter of inquiry runs one to three pages, with one and a half to two pages being ideal. Foundation reviewers read many of these per cycle, so a tight, well-organized letter respects their time and signals that you can write a disciplined full proposal.

What happens if I miss the letter of intent deadline?

For programs that require one, missing the LOI deadline usually disqualifies the full application — USDA NIFA’s AFRI program, for example, would not review applications that skipped the requested letter. Because 2 CFR 200.204 requires the NOFO to publish the LOI due date, there is no ambiguity about the deadline. Treat it as a hard gate, not a suggestion, and submit early.

Bottom line and next steps

Stop looking for one perfect letter of intent grant template and start identifying which of the three documents your funder actually wants. The rule split that NIH made official in December 2025 — deleting the federal LOI while agencies like USDA keep theirs and foundations sharpen theirs — means the only authoritative template is the one embedded in your current opportunity’s instructions. Read those first, then borrow the matching structure above.

If you are juggling several funders with conflicting requirements, the fastest way to avoid a fatal formatting mistake is to have someone who reads NOFOs for a living check your draft against the live rules. OpenGrants can connect you with a vetted specialist through our grant writer network, so your letter matches what each funder is actually screening for — federal, partner, or foundation. Match the document to the reader, and the letter of intent stops being a gamble and starts being the thing that gets you to the next round.