Mycological Society of San Francisco
Public records show a registered, tax-exempt organization in good standing.
What it says it does
Public education on Mycology - annual education fairs, booths and events at museums Monthly public lectures Member education - special meetings, field trips, classes
- Income
- $74,750
- Spending
- $81,188
- Reserves
- 13.8 months of spending
- Largest source of income
- fees for its services, 80%
Source: Form 990EZ for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Financial health
Good: 84 out of 100. Higher than 64% of charities in its peer group (science, under $250k).
Reserves
35 of 35Spendable reserves would cover 13.8 months of spending.
Debt
20 of 20It owes 0% of what it owns.
Living within its means
4 of 15Spending exceeded income by 9% of income.
Source: Form 990EZ for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Governance
This organization files the short tax form, which does not ask about boards, policies or audits. That is normal for a small charity and is not a mark against it.
Source: Form 990EZ for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Impact evidence
Describes programs. Its tax return describes what it does but we have found no measurable results in it.
Programs described in its return (2)
- $23,469 spent. Public education - annual education fairs, booths and events at museums - monthly public lectures - monthly half-day walks are open to public
- $33,285 spent. Member education - special meetings, field trips, classes - Several week-end long field trips (members only) plus at least one day trip per month - Monthly electronic newsletter published from September to May, website
Source: Form 990EZ for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Legitimacy checks
Is it registered with the IRS? Passed.
Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Has the IRS revoked its tax-exempt status? Worth knowing.
Status was revoked on November 15, 2015 for not filing returns for three years, and reinstated on November 15, 2015.
Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.
Are donations tax-deductible? Passed.
On the IRS list of organizations eligible to receive tax-deductible contributions.
Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.
Is it keeping up with its IRS filings? Passed.
Most recent return on file covers the year ending June 2025.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
How long has it been tax-exempt? Passed.
Recognized by the IRS since July 2022.
Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.
Is it in good standing with state regulators? Passed.
Not on California's list of charities barred from soliciting. Other states are not yet checked.
Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.
Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.