Proposal Writing
Letter of Support for a Grant: Examples and How to Request One
Grant Writing Service Editorial Team
June 12, 2026 · 7 min read
Table of contents
Key takeaways
- A letter of support is a signed endorsement from a partner, stakeholder, or expert; a letter of commitment goes further and pledges specific resources.
- Strong letters name the project, state the writer's relationship to it, and describe a concrete role or benefit, with numbers where possible.
- Request letters early with a tailored draft for each writer, and never submit identical letters with different signatures.
- Follow the funder's rules on letters: some cap the number, and NSF generally does not accept letters of support unless the solicitation allows them.
A letter of support for a grant is a signed letter from a partner, stakeholder, or expert endorsing an applicant and its proposed project. Funders read it as independent evidence that the work is needed, that the applicant can deliver it, and that the partnerships described in the proposal are real. The strongest letters name the specific project, state the writer's relationship to the applicant, and describe a concrete role or benefit, with numbers where possible.
Below are three example letters, what separates them from generic endorsements, who should write them, and how to request them.
Support or commitment: know which the funder wants
| Letter of support | Letter of commitment |
|---|---|
| Endorses the project | Pledges specific resources |
| "We support this program and the need it addresses" | "We will provide 200 referrals a year and exam space two days a week" |
| Builds credibility | Builds credibility and proves feasibility |
Some funders ask for one, some for both, and some use the terms interchangeably. When a notice requires committed resources, such as matching funds, staff time, space, or data access, an endorsement that promises nothing does not meet the requirement. Quantified pledges also belong in your budget as matching or in-kind contributions where the funder counts them.
Check the funder's rules on letters before asking anyone. Some cap the number of letters or say where they go in the application. NSF generally does not accept letters of support unless the program solicitation requires or allows them, and uses a prescribed one-sentence format for letters of collaboration. Federal health and education programs often require letters of commitment from named partners.
Three example letters
All three are illustrative; the organizations, people, and figures are invented.
Example 1: Partner organization with a commitment
Meridian Family Medicine 88 Grove Avenue, Northgate
August 20, 2026
Dr. Elena Marsh Program Director, Health Equity The Calloway Foundation
Dear Dr. Marsh,
I am writing on behalf of Meridian Family Medicine to support Northgate Community Health Alliance's application for the Pantry-Based Diabetes Care Project, and to confirm our commitment to it.
Meridian is the only primary care practice serving Northgate's east side. Many of our patients with diabetes miss follow-up visits because they cannot reach us; transportation is the reason they give most often. A program that meets them at the food pantries they already visit addresses the problem we see every day.
For the two-year project, Meridian will:
- Accept referrals of all participants who do not have a primary care provider, with appointments offered within three weeks
- Provide physician oversight of the diabetes educators' clinical protocols, at no cost to the project
- Share de-identified follow-up visit data with the Alliance each quarter for evaluation, under a data use agreement
We have worked with the Alliance since 2019 on its mobile screening program, which has referred more than 300 patients to our practice. Its staff are reliable partners and know this neighborhood well.
Please contact me at (555) 010-0190 with any questions.
Sincerely,
Dr. James Holloway Medical Director, Meridian Family Medicine
Why it works: it names the project and the funder, explains why the writer cares in terms of their own patients, lists commitments that a reviewer can check against the proposal, and backs its endorsement with a shared history and a number.
Example 2: Community organization or member of the population served
Eastside Tenants' Association
September 2, 2026
To the Review Committee, Ashford Community Foundation:
The Eastside Tenants' Association represents about 400 households in the Eastside and Millbrook neighborhoods. We strongly support Ashford Legal Aid's proposal to expand its eviction defense program.
Our members are the people this program would serve. Last year, at least 60 of our member households received eviction filings, and almost none had a lawyer at their hearing. Several families who lost their cases had to leave the neighborhood because the court record made it hard to rent again. When Ashford Legal Aid represented members at hearings through its pilot, most were able to stay in their homes or move on a timeline they could manage.
Our association will share information about the program at our monthly meetings and in our newsletter, and our volunteer building captains will help tenants who receive eviction notices contact Ashford Legal Aid quickly.
We urge the Foundation to fund this proposal. Please contact me at (555) 010-0133.
Sincerely,
Teresa Gomez President, Eastside Tenants' Association
Why it works: it speaks from lived experience, which no other writer can supply, adds its own numbers to the applicant's data, and offers a practical role (outreach) rather than praise alone.
Example 3: Public official
Office of the County Commissioner, District 3
September 5, 2026
Dear Review Panel:
I write in support of Mesa County Health Collaborative's application to the Western Rural Health Fund for the Pharmacy-Based Telehealth for Rural Behavioral Health project.
District 3 covers the most remote parts of Mesa County. Residents in our outlying towns drive up to 70 miles for a counseling appointment, and access to mental health care is the concern I hear most often at community meetings. The project's use of local pharmacies, which residents in every town already visit, is a practical answer to a problem the county has not been able to solve with existing resources.
The Collaborative has managed county health partnerships responsibly since 2016, including a pharmacy-based diabetes education pilot in 2025. I have asked county staff to help the project identify broadband options for participating pharmacies.
I am glad to support this application.
Sincerely,
Commissioner Ellen Park Mesa County, District 3
Why it works: it confirms the need from a public vantage point, endorses the specific approach, and adds one concrete action instead of generic praise.
What every strong letter contains
Whatever the writer's role, an effective letter fits on one page and covers:
- Who the writer is and their relationship to the applicant
- The project, by name, and the funder or program it is addressed to
- Why it matters to the writer's community, patients, members, or field
- A concrete role, contribution, or benefit, quantified where possible
- Evidence from direct knowledge of the applicant's track record
- A clear closing statement of support, contact information, signature, and title
Specificity is what gives a letter weight. "We support this important work" says nothing a reviewer can use; "Our clinic will accept all referrals and offer appointments within three weeks" confirms a claim in your methods section. Each letter should corroborate something your case for the need or work plan already says.
Who to ask
Prioritize writers with standing to speak to the project:
- Delivery partners whose roles appear in your methods
- The population served, or organizations that represent it
- Public officials and agencies, whose support signals community priority
- Subject-matter experts who can vouch for the approach
- Organizations contributing resources such as space, staff time, data, or matching funds
Three specific letters from partners named in the proposal carry more weight than ten general endorsements. A letter from someone who appears nowhere else in the application raises the question of why it is there.
How to request letters without delays
- Ask early. Request letters as soon as the project design is firm, not the week before the deadline.
- Send a tailored draft. Give each writer a short draft that names the project, their relationship, and their suggested role, and invite them to edit and sign it on their letterhead. This is common practice and saves busy partners time, as long as the final letter reflects the signer's real views and commitments.
- Make every draft different. Reviewers notice identical letters signed by different people, and it undermines the credibility the letters are meant to build.
- Specify the details. Letterhead, date, addressee, signature, and file format the funder requires.
- Set an internal deadline with a buffer. Ask for letters a week or more before you need them, and track who has returned what.
Check each returned letter against your proposal. A partner who commits to 150 referrals when your narrative says 200 creates a contradiction a reviewer will catch. Our final proposal checklist includes letters among the attachments to verify, and the letter of support template gives you a starting draft to tailor for each writer.
For where letters fit among the other parts of an application, see our guide to the parts of a grant application. If you want the support package coordinated alongside the narrative, our federal grant writing service manages partner letters as part of the full application.
