# Tamalpais High School Boosters Club

Youth development nonprofit in Mill Valley, California 94941. EIN 68-0385385. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/680385385-tamalpais-high-school-boosters-club

## Mission (the organization's own words)

> To encourage, promote and assist athletic activities in the Tamalpais High School Community. The organization provides team equipment, facilities improvements, training aids, tournament fees, and senior and need based scholarships for students participating in sports activities at Tamalpais High School.

Source: Form 990, year ending Jul 2025: https://projects.propublica.org/nonprofits/organizations/680385385/202630549349301403/full

## IRS facts

- Type: Youth development (IRS activity code O99)
- Tax status: 501(c)(3), contributions deductible, recognized 1997
- Source: IRS Business Master File, posted October 13, 2026: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf

## Finances (IRS Form 990 e-file data)

| Year ending | Revenue | Expenses | Assets | Net assets | Employees | Volunteers | Source |
|---|---|---|---|---|---|---|---|
| Jul 2025 | $216,449 | $235,911 | $99,862 | $99,862 | 0 | 11 | [Form 990](https://projects.propublica.org/nonprofits/organizations/680385385/202630549349301403/full) |
| Jul 2023 | $176,669 | $160,637 | $131,723 | $131,723 | - | - | [Form 990-EZ](https://projects.propublica.org/nonprofits/organizations/680385385/202333079349201328/full) |
| Jul 2022 | $164,190 | $140,720 | $115,701 | $115,701 | 0 | 11 | [Form 990](https://projects.propublica.org/nonprofits/organizations/680385385/202301659349301230/full) |
| Jul 2021 | $116,643 | $79,460 | $92,231 | $92,231 | 0 | 9 | [Form 990](https://projects.propublica.org/nonprofits/organizations/680385385/202231969349302768/full) |

Expense split, year ending Jul 2025: programs $227,933 (97%), management $3,526 (1%), fundraising $4,452 (2%).

Revenue sources, year ending Jul 2025: gifts and grants $211,970, program fees $0, investment income $4,479.

Growth label: **Growing** (about +17% a year, Jul 2021 to Jul 2025). Growth label: we compare total revenue on the oldest and the newest return shown above. Growing means revenue rose by more than 10% a year on average, Shrinking means it fell by more than 10% a year, and Steady means a change between -10% and +10% a year. The rate is the compounded yearly average between the two returns, so it hides ups and downs in between (see the table). We only label groups with returns at least a year apart and at least $5,000 of revenue on the oldest one. This is our own calculation, not an IRS rating or a judgment of quality.

## How it compares

- Revenue rank: 2 of 9 youth development nonprofits in Mill Valley.
- Revenue $216,449 is higher than roughly 50 to 60% of 1,664 youth development nonprofits in California; median $169,823.
- Source: IRS Business Master File, posted October 13, 2026; BackPR analysis.

## Local context

- Marin County, California: about 47,838 children under 18 (U.S. Census Bureau, July 1, 2024): https://www2.census.gov/programs-surveys/popest/datasets/2020-2024/counties/asrh/cc-est2024-agesex-all.csv
- 184 youth and community nonprofits in this directory in the county: 3.8 per 1,000 children.
- Licensed programs in Mill Valley: 14 licensed child care centers, 4 school-age programs: https://backpr.com/find/california/mill-valley
- California rules: https://backpr.com/resources/states/california

## Questions

**What is Tamalpais High School Boosters Club's EIN?**

Tamalpais High School Boosters Club's EIN (Employer Identification Number) is 68-0385385. It is the nine-digit number the IRS uses to identify the organization. Source: IRS Exempt Organizations Business Master File posted October 13, 2026.

**Is Tamalpais High School Boosters Club a nonprofit?**

Yes. The IRS lists Tamalpais High School Boosters Club in Mill Valley, California as tax-exempt under section 501(c)(3), recognized since 1997. This is from the IRS Business Master File posted October 13, 2026. Status can change, so check its current status on the IRS Tax Exempt Organization Search before you donate.

**Are donations to Tamalpais High School Boosters Club tax-deductible?**

Yes, the IRS lists gifts to Tamalpais High School Boosters Club as tax-deductible (IRS Business Master File posted October 13, 2026). How much you can deduct depends on your own taxes, and this is not tax advice. Check its current status on the IRS Tax Exempt Organization Search before you donate.

**What does Tamalpais High School Boosters Club do?**

In its own words on its Form 990 for the year ending Jul 2025: "To encourage, promote and assist athletic activities in the Tamalpais High School Community. The organization provides team equipment, facilities improvements, training aids, tournament fees, and senior and need based scholarships for students participating in sports activities at Tamalpais High School." The IRS classifies it as: Youth development.

**How much money does Tamalpais High School Boosters Club take in?**

For the year ending Jul 2025, Tamalpais High School Boosters Club reported total revenue of $216,449 and total expenses of $235,911 on its Form 990 (IRS Form 990 e-file data).

---
Data as of November 8, 2026. Sources: IRS Business Master File, IRS Form 990 series e-file data, U.S. Census Bureau. No officer or staff names are published.