Marin Heat

A tax-exempt amateur sports nonprofit with a mailing address in Corte Madera, California, IRS-recognized as tax-exempt since 2024.

Data as of November 8, 2026Markdown copy JSON data

IRS facts

Type: Amateur sports (IRS activity code N60)

Mailing city (IRS): Corte Madera, California 94925

EIN: 99-4584639

Tax status: 501(c)(3), eligible to receive tax-deductible donations; IRS-recognized as tax-exempt since 2024, per IRS records posted October 13, 2026.

Revenue on its latest IRS filing: Not reported. Groups with under $50,000 in receipts usually file the e-Postcard (Form 990-N), which shows no revenue.

Check its status on IRS Tax Exempt Organization Search · Filings on ProPublica Nonprofit Explorer

Around Corte Madera and its county

Marin County, California: the Census Bureau estimates about 47,838 children under 18 (July 1, 2024). This directory lists 184 youth and community nonprofits with a mailing ZIP code in the county, about 3.8 per 1,000 children. The count includes PTAs, arts and day care groups, so it is not a measure of places for kids.

This group's ZIP code is matched to the county that holds most of its area, so counts are approximate. County figures come from the Census Bureau's Vintage 2024 population estimates.

What is Marin Heat's EIN?

Marin Heat's EIN (Employer Identification Number) is 99-4584639. 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 Marin Heat a nonprofit?

Yes. The IRS lists Marin Heat in Corte Madera, California as tax-exempt under section 501(c)(3), recognized since 2024. 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 Marin Heat tax-deductible?

Yes, the IRS lists gifts to Marin Heat 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 Marin Heat do?

The IRS classifies Marin Heat as: Amateur sports. It has not filed a Form 990 or 990-EZ with a mission statement that we have loaded.

Do you run this organization?

You can add your programs, season dates, ages, prices, registration link and logo to this page, or ask us to remove it. BackPR's free plan for 501(c)(3)s handles online registration, payments, waivers and attendance. No subscription and no BackPR fee on what families pay (card processing fees from Stripe still apply).

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Free forms for amateur sports nonprofits

Registration formFree Medical and allergy formFree Code of conductFree Photo releaseFree

More amateur sports nonprofits in Corte Madera

Baseball and softball

Marin Girls Softball League

Corte Madera, CA 94925

Tax-exempt since 1991 · EIN 68-0217214

Racquet sports

The Northern California Junior Lacrosse Association

Corte Madera, CA 94925

Tax-exempt since 1988 · EIN 94-3060309

All youth and community nonprofits in Corte Madera

Source: IRS Exempt Organizations Business Master File, posted October 13, 2026. We list 501(c)(3) organizations whose IRS activity code is youth development, amateur sports, camps and recreation, parent-teacher groups, children's services, child day care or arts education. We show the city and ZIP code only, never a street address or contact person. A listing is not an endorsement.

Data as of November 8, 2026. Sources: IRS Business Master File (posted October 13, 2026), U.S. Census Bureau population estimates (July 1, 2024), state child care licensing records in the BackPR finder. Growth labels, ranks and percentiles are BackPR's own calculations.

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