Impact100 Sonoma is open to all women age 18 or older who live in, or wish to support, the Sonoma Valley nonprofit community. Each $1,200 annual donation provides membership for one year's grant cycle.

Yes. Contributions made by December 31 are tax-deductible for the year in which the donation was made. Impact100 Sonoma is a Section 501(c)(3) nonprofit organization.

It breaks down simply:

• $1,000 goes directly to fund grants for valley-serving nonprofits—100% of it.
• $200 goes to help cover essential operating expenses so that we can run effectively as an all-volunteer organization. It represents each member’s stake in our success.

The full $1,200 is tax-deductible, and your investment helps us put every grant dollar where it belongs—into our community.

Yes. You may pay with a credit or debit card via the Member Profile you will create online. You also can pay directly from your bank account, via check or installments.

Yes. Businesses or employers can contribute any amount to an employee’s membership in Impact100 Sonoma. We also appreciate matching funds from employers and use those donations to help offset essential operating costs.

Learn about our Employee and Individual Sponsorship programs. We also have a Shared Membership program in which you and a partner split the individual membership fee of $1,200. As full members, both of you can attend meetings, participate in all activities, and join committees, but you’ll share one ballot to select nonprofit grant recipients.

No. Our founding principle is “one woman, one vote.” Additional donations are an essential part of helping to strengthen our organization today and sustain it for the future.

Each annual donation provides membership for the next calendar year. Women who donate by December 31 of any year are eligible to vote on grant recipients in the spring of the following year and qualify as members for the entire year. We welcome new members all year long, and no matter when they join, they immediately enjoy full member access.

Once you join, your level of involvement is entirely up to you. You can simply join and entrust your donation to the membership, participate in voting for the annual grant recipients, or become actively involved by serving on a Grant Review Committee, a standing committee, or our board of directors. Ours is a guilt-free organization! Every membership dollar is equal in serving our community.

Impact100 Sonoma communicates with members primarily via email, social media, and the website. In addition, we publish a monthly online newsletter and host a variety of events throughout the year.

You can become a Friend of Impact100 Sonoma and play a very important role in our organization. All Friend donations are tax-deductible. While it does not provide you with voting rights, your Friend donation can be designated to go toward the grants pool or support operations. You can donate HERE

Men are encouraged to become Friends of Impact100 Sonoma (see above) and may volunteer to help at activities and events. They may not become members.