# Tamalpais Aquatic Masters

Amateur sports competitions nonprofit in San Rafael, California 94915. EIN 94-2690359. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/942690359-tamalpais-aquatic-masters

## Mission (the organization's own words)

> To provide education, training, and coaching necessary to compete in local,national, and international swimming events. The organization also promotes physical and mental fitness through swimming.

Source: Form 990-EZ, year ending Dec 2025: https://projects.propublica.org/nonprofits/organizations/942690359/202601669349200140/full

## IRS facts

- Type: Amateur sports competitions (IRS activity code N70)
- Tax status: 501(c)(3), contributions deductible, recognized 2022
- 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 |
|---|---|---|---|---|---|---|---|
| Dec 2025 | $139,385 | $132,341 | $56,668 | $29,486 | - | - | [Form 990-EZ](https://projects.propublica.org/nonprofits/organizations/942690359/202601669349200140/full) |
| Dec 2024 | $131,926 | $143,890 | $30,647 | $22,712 | - | - | [Form 990-EZ](https://projects.propublica.org/nonprofits/organizations/942690359/202533009349201238/full) |
| Dec 2023 | $119,401 | $118,146 | $36,142 | $34,676 | - | - | [Form 990-EZ](https://projects.propublica.org/nonprofits/organizations/942690359/202431239349202078/full) |
| Dec 2021 | $60,571 | $60,269 | $20,337 | $20,337 | - | - | [Form 990-EZ](https://projects.propublica.org/nonprofits/organizations/942690359/202201299349200540/full) |

Revenue sources, year ending Dec 2025: gifts and grants $17,355, program fees $0, investment income $4.

Growth label: **Growing** (about +23% a year, Dec 2021 to Dec 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: 4 of 20 amateur sports nonprofits in San Rafael.
- Revenue $139,385 is higher than roughly 40 to 50% of 2,432 amateur sports nonprofits in California; median $143,571.
- Source: IRS Business Master File, posted October 13, 2026; BackPR analysis.

- Licensed programs in San Rafael: 39 licensed child care centers, 2 school-age programs: https://backpr.com/find/california/san-rafael
- California rules: https://backpr.com/resources/states/california

## Questions

**What is Tamalpais Aquatic Masters's EIN?**

Tamalpais Aquatic Masters's EIN (Employer Identification Number) is 94-2690359. 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 Aquatic Masters a nonprofit?**

Yes. The IRS lists Tamalpais Aquatic Masters in San Rafael, California as tax-exempt under section 501(c)(3), recognized since 2022. 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 Aquatic Masters tax-deductible?**

Yes, the IRS lists gifts to Tamalpais Aquatic Masters 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 Aquatic Masters do?**

In its own words on its Form 990 for the year ending Dec 2025: "To provide education, training, and coaching necessary to compete in local,national, and international swimming events. The organization also promotes physical and mental fitness through swimming." The IRS classifies it as: Amateur sports competitions.

**How much money does Tamalpais Aquatic Masters take in?**

For the year ending Dec 2025, Tamalpais Aquatic Masters reported total revenue of $139,385 and total expenses of $132,341 on its Form 990-EZ (IRS Form 990 e-file data).

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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.