How to Write a Donor Impact Letter

What is an Impact Letter and Why Should You Send One?

An impact letter is a powerful communication tool used by nonprofits to show donors the tangible results of their contributions. It serves to reinforce the donor’s importance to the organization by illustrating how their support has made a difference. This type of communication helps build trust and strengthens the relationship between the donor and the nonprofit, which is crucial for long-term donor retention. Sending an impact letter not only acknowledges and appreciates the donor’s generosity but also motivates continued support by demonstrating the real-world impact of their contributions.

Key Components of an Impact Letter


Address the letter personally to the donor, using their name and specific details about their contribution. This makes the donor feel valued and recognized for their individual support.

Summary of Achievements

Outline the key achievements made possible by the donor’s support. Be specific about the projects or initiatives funded, and provide concrete examples of success stories.

Impact Stories

Include stories that highlight the personal impact of the donor’s contributions. These could be testimonials from beneficiaries or detailed accounts of how specific projects have changed lives or improved the community.


Incorporate images or infographics that visually represent the impact. Photos of beneficiaries, project outcomes, or events can make the impact more relatable and compelling.


Express sincere gratitude throughout the letter. Make it clear that these achievements would not have been possible without the donor’s generosity.

No Ask

An impact letter should not include a direct request for additional donations. The focus should be solely on thanking the donor and sharing the impact of their past contributions.  Do not THASK (thank and ask at the same time).

Example of an Impact Letter

Dear [Donor’s Name],

It has been six months since you contributed to ABC Organization, and we wanted to take this opportunity to share the tremendous impact your generosity has made. Thanks to your support, we have been able to achieve the following:

**Feeding Families** With your help, we have provided over 5,000 meals to families in need. This has not only helped to alleviate hunger but also brought a sense of hope and community to those we serve.

**Educational Programs** Your contributions have funded after-school programs for over 200 children, offering them a safe place to learn and grow. These programs have shown remarkable improvements in the students’ academic performance and self-confidence.

**Healthcare Services** We have been able to offer free healthcare services to 300 individuals who otherwise could not afford them. Stories like that of Maria, who received life-saving treatment, highlight the critical role your donations play in our community’s health and well-being.

[insert story about Maria]

We cannot express enough how much your support means to us. Without donors like you, these accomplishments would not be possible. Your involvement has directly contributed to transforming lives and fostering a stronger, healthier community.

Thank you once again for your generosity and commitment to our cause. We look forward to sharing more stories of impact with you in the future.

Warm regards,

[Your Name]
[Your Title]
[Nonprofit Organization]


Writing a donor impact letter is an essential practice for any nonprofit organization. By taking the time to personalize the letter, summarize achievements, share compelling impact stories, use visuals, express gratitude, and avoid direct asks for further donations, you can effectively communicate the value of your donors’ contributions. This not only helps in building and maintaining a strong relationship with your donors but also ensures they feel appreciated and motivated to continue supporting your mission.