Log in
Log in


Please join us. Together our voices are stronger, our financial contribution is greater, and our impact is deeper. 

To become a member, you must be age 18 or older. 

Basic membership is $1,200. As always, $1,000 of each membership annual donation goes to grants that benefit the Sonoma Valley community.

Your membership also includes a $200 operations fee, which represents your stake in the success of our volunteer-led organization. 

The $1,200 total is fully tax-deductible.

Please consider joining at the Member Plus level by making an additional tax-deductible contribution to support our organization. We are grateful that so many of our members go above and beyond the basic membership and contribute additional funds. 

We also invite you to consider making an additional contribution to our 2024 grants pool. This tax-deductible donation is separate from your Member or Member Plus contribution. Donate here.

Membership Categories

Basic Membership: $1,200 ($1,000 for grants + $200 operations fee)

Member Plus Levels:

Community Partner: $1,300  ($1,000 for grants + $200 operations fee + $100 Member Plus donation)

Community Advocate: $1,400 ($1,000 for grants + $200 operations fee + $200 Member Plus donation)

Community Leader: $1,700 ($1,000 for grants + $200 operations fee + $500 Member Plus donation)

Community Visionary: $2,200 ($1,000 for grants + $200 operations fee + $1,000 Member Plus donation)

Shared Memberships

Here’s how it works: two women = one full membership = one vote. Find a partner to split the basic membership fee of $1,200. As full members, both of you can attend meetings, participate in activities, and join committees, but you’ll share one vote to select nonprofit grant recipients. For more information about Shared Memberships, contact


Payment Options

By Credit Card

Pay through your member profile.

By Check
Download and fill out the Impact100 Membership form. Mail it along with your check payable to:

Impact100 Sonoma

P.O. Box 1958

Sonoma, CA 95476

In Installments

If you prefer to pay over time, you can mail a monthly check or set up an automatic monthly payment through your bank. Payments must total $1,200 during the calendar year. To set up this option, contact

Want to support Sonoma Valley in other ways?

  • Individuals can support our community through direct donations, by sponsoring a member, or through Tribute or Legacy gifts.   
  • Businesses can show their support by sponsoring an employee, sponsoring an event through direct or in-kind donations, or by underwriting our work.         

To become an Impact100 Sonoma member, select your membership level below

and click "Next" to complete the process:

Warning: browser cookies disabled. Please enable them to use this website.

Select membership level

* Mandatory fields
* Membership level


A Just & Thriving Sonoma Valley


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

Impact100 Sonoma is a member of Philanos

Impact100 Sonoma ©2022. All rights reserved

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

Stay Connected:

Subscribe to our Newsletter


Powered by Wild Apricot Membership Software