| Name | Deductibility Code |
| Anns Hope Foundation Inc. | -- |
| Arrowhead Booster Club | -- |
| Arrowhead High School Endowment Fund Inc. | -- |
| Arrowhead Scholarship Fund Inc. | -- |
| Arrowhead Youth Hockey Association Inc. | -- |
| Briscoe Ministries Foundation Ltd. | 4 |
| Brookfield Academy Junior Knights Football Club Inc. | -- |
| Burkwald Family Foundation Inc. | 4 |
| Chenequa Foundation | -- |
| Cherchian Family Foundation Inc. | 4 |
| Clay A Healing Way Inc. | -- |
| Creature Comfort Rescue | -- |
| Dalum Family Foundation | 4 |
| Daylily Society of Southeast Wisconsin Inc. | -- |
| Equipment & Engine Training Council Inc. | -- |
| Faye Gehl Conservation Foundation Inc. | 4 |
| Fellow Mortals Wild Life Hospital Foundation Inc. | -- |
| First Baptist Church Incorporated of Hartland Wisconsin | -- |
| Friends of Beaver Lake Inc. | -- |
| Friends of the Hartland Library Inc. | -- |
| Friendship House of Milwaukee Inc. | 3 |
| Galaxy Foundation Inc. | 4 |
| Gasp Inc. | -- |
| German American Societies of Milwaukee Inc. | -- |
| Harley-Davidson Foundation Inc. | 4 |
| Hartland Area Food Pantry Inc. | -- |
| Hartland Arrowhead High School- booster Band and Orchestra Parents | -- |
| Hartland Elementary South Pto Inc. | -- |
| Hartland Historical Society | -- |
| Hartland Youth Baseball Inc. | -- |
| Hartland-Lakeside Education Foundation | -- |
| Heat Cheer Booster Club | -- |
| Holler Charitable Foundation | 4 |
| Honduran Mission Putting Children First Inc. | -- |
| I Back Jack Foundation Inc. | -- |
| Infancy International Incorporated | -- |
| Iron Angels Inc. | -- |
| James A Taylor Family Foundation Inc. | 4 |
| Jean & Thomas Harbeck Family Foundation Inc. | 4 |
| John N & Kathleen S Macdonough Foundation Inc. | 4 |
| Lai Family Foundation Inc. | 4 |
| Lake Country Bible Church Inc. | -- |
| Lake Country Caring Incorporated | -- |
| Lake Country Chiefs | -- |
| Lake Country Foundation Inc. | -- |
| Lake Country Montessori Inc. | -- |
| Lake Country Parent Teacher Organization Inc. | -- |
| Lake Country Players Inc. | -- |
| Lake Country School Education Foundation Inc. | -- |
| Lake Country Soccer | -- |
| Lake County Swim Team Ltd. | -- |
| Lou Warobick Junior Golf Foundation Inc. | -- |
| Merganser Fund Inc. | 4 |
| Midwest Twisters Booster Club- hartland Inc. | -- |
| Milwaukee Bombers Austrailan Football Club | -- |
| North Shore Middle School Pto | -- |
| Northpoint Community Church | -- |
| Schoolhouse Players Inc. | -- |
| Science Quest Inc. | -- |
| Seeds of Faith Inc. | 4 |
| Stacey Elizabeth Mayer Foundation Inc. | 4 |
| Swallow Education Foundation Inc. | -- |
| Tate Family Foundation Inc. | 4 |
| Theodore W Batterman Family Foundation Inc. | 4 |
| Think Cure Foundation Inc. | -- |
| Tristate Thoracic Society | -- |
| University Lake School Inc. | -- |
| Waukesha Area Youth Orchestra Ltd. | -- |
| Waukesha Sunrise Rotary Club Charitable Fund Inc. | -- |
| Westbrook Church Inc. | -- |
| Woodland Academy-Lake Country Inc. | -- |