| Name | Deductibility Code |
| Center for Land-Based Learning | -- |
| Goal4org | -- |
| Mariani Nut Co Foundation Inc. | 3 |
| Robert and Lucille Teel Foundation | 4 |
| Rotary Club of Winters Community Foundation | 4 |
| Solano County Animal Resue Foundation | -- |
| Valley Christian Church at Lake Berryessa | -- |
| Winters Community Christian School | -- |
| Winters Community Theater | -- |
| Winters Discovery Worship Center of the Assemblies of God | -- |
| Winters Friends of the Library | -- |
| Winters Healthcare Foundation Inc. | -- |
| Winters High School Grad Nite Parent Group | -- |
| Winters Institute | 4 |
| Winters Joint Unified School District Financing Corporation | -- |
| Winters Little League | -- |
| Winters Livestock Supporters Inc. | -- |
| Winters Music Booster Club Association | -- |
| Winters Parent Nursery School | -- |
| Winters Participation Gallery for the Arts | -- |