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Our Funding Model

Participate in the Women's Collective Giving Movement

The Impact100 Model: Women Giving as One




GATHER TOGETHER AT

LEAST 100 WOMEN

EACH WOMAN CONTRIBUTES

$1,000 TO GRANTS POOL

ENTIRE GRANTS POOL AWARDED

TO LOCAL NONPROFITS

Like women across the country and around the world, we at Impact100 Sonoma combine our resources to make a greater difference in our community than we could alone. Here's how:

  • Each member makes an annual, fully tax-deductible, minimum donation of $1,200.

  • $1,000 goes to fund grants, while $200 goes to help cover the operating expenses of our volunteer-led organization.
  • Each January, nonprofit organizations serving Sonoma Valley apply for grants.
  • Member volunteer committees review proposals, make site visits, and select finalists to present in person to the full membership.
  • All members vote on grant recipients, and grants are awarded in the spring.

Impact That Belies Our Size

Founded in 2009 by Annette Lomont and Christine Dohrmann, Impact100 Sonoma was the first Impact100 formed in California. 

Today we continue to generate the largest annual grants pool of any chapter in the state, even though our community has the smallest populationa testament to our valley's culture of generosity and community engagement. Growing our number of member donors is essential for meeting the ever-growing needs of our community.


What We Do Together

Like every community, ours has challenges that require the leadership, hard work, and wise hearts of individuals and organizations to support our neighbors and our natural resources. From 2010 thru 2019, we funded a $100,000 Impact Grant every year. As our membership grew, we were able to increase our vital support by also offering annual Community Grants between $5,000 and $20,000. In 2020, after careful study, we adopted our current model of awarding broadly disbursed Impetus Grants of up to $25,000. In 2024, we introduced the Encore Grant, a second consecutive year of the same funding for one Impetus Grant recipient.

Impact100 Sonoma is an affiliate of two organizations that facilitate women's collective giving: Philanos and Impact100 Global.

Read more about giving circles in this study, commissioned by Philanthropy Today.

OUR VISION

A just and thriving Sonoma Valley

OUR MISSION

Empowering women of Sonoma Valley to invest in a more sustainable nonprofit community through collective giving and responsible stewardship

Impact100 Sonoma ©2025. All rights reserved



Impact100 Sonoma
P.O. Box 1958
Sonoma, CA 95476
(707) 939-5007
info@impact100sonoma.org


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