National Museum of Mathematics
Public records show a registered, tax-exempt organization in good standing.
What it says it does
MATHEMATICS ILLUMINATES THE PATTERNS THAT ABOUND IN OUR WORLD. THE NATIONAL MUSEUM OF MATHEMATICS (MOMATH) STRIVES TO ENHANCE PUBLIC UNDERSTANDING AND PERCEPTION OF MATHEMATICS. ITS DYNAMIC EXHIBITS AND PROGRAMS STIMULATE INQUIRY, SPARK CURIOSITY, AND REVEAL THE WONDERS OF MATHEMATICS. THE MUSEUM'S ACTIVITIES LEAD A BROAD AND DIVERSE AUDIENCE TO UNDERSTAND THE EVOLVING, CREATIVE, HUMAN, AND AESTHETIC NATURE OF MATHEMATICS.
- Income
- $25.9 million
- Spending
- $10.4 million
- Spent on programs
- 69%
- Reserves
- 40.7 months of spending
- Largest source of income
- donations and private grants, 83%
- Employees
- 62
- Volunteers
- 100
- Highest pay
- $436,598, executive director and ceo
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Financial health
Good: 85 out of 100. Higher than 61% of charities in its peer group (arts and culture, $10m to $100m).
Reserves
35 of 35Spendable reserves would cover 40.7 months of spending.
Debt
10 of 20It owes 34% of what it owns.
Living within its means
15 of 15Income exceeded spending by 60% of income.
Income trend
10 of 15Income fell 4% on the year before.
Spending floor
15 of 1569% of spending went to programs and raising each dollar of donations cost 4 cents.
Source: Form 990 for the year ending June 30, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate
Governance
Strong: 100 out of 100. Higher than 34% of charities in its peer group (arts and culture, $10m to $100m).
Independent board
25 of 2526 of 26 voting board members are independent.
Conflict of interest policy
15 of 15Has a written conflict of interest policy.
Whistleblower policy
8 of 8Has a written whistleblower policy.
Record keeping policy
7 of 7Has a written policy on keeping and destroying records.
Board minutes
5 of 5Keeps minutes of board meetings.
Board sees the tax return
10 of 10Gave the board a copy of this return before filing it.
Pay set independently
5 of 5Sets its chief executive's pay through independent review and comparison.
Independent check of accounts
15 of 15Its accounts were audited by an independent accountant.
No reported misuse
10 of 10Reports no diversion of assets, excess benefits or loans to insiders.
Source: Form 990 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 (3)
- $5.9 million spent. MUSEUM: DURING FISCAL 2025, MOMATH OPERATED A HANDS-ON MUSEUM FOCUSED ON MATHEMATICS IN A TEMPORARY LOCATION ON FIFTH AVENUE, AS WELL AS RUNNING ONLINE PROGRAMS REACHING PEOPLE IN 145 COUNTRIES AROUND THE WORLD. DURING THE FISCAL YEAR, THE MUSEUM ALSO REFURBISHED OLD EXHIBITS, DESIGNED AND BUILT NEW EXHIBITS, AND MANAGED A CONSTRUCTION PROJECT FOR ITS NEW LOCATION ON SIXTH AVENUE.
- $1.2 million spent. COMMUNITY: MOMATH OPERATES A NUMBER OF PUBLIC PROGRAMS THAT SERVE THE COMMUNITY BY PROVIDING EXPERIENCES THAT HIGHLIGHT THE EVOLVING, CREATIVE, AND AESTHETIC NATURE OF MATHEMATICS. THESE PROGRAMS ALSO AIM TO SHOW THE MANY UNEXPECTED WAYS THAT MATH TOUCHES ON THE WORLD AROUND US AND ON OUR EVERYDAY LIVES. COMMUNITY PROGRAMS INCLUDED SEVERAL MONTHLY PRESENTATION SERIES, A SUITE OF TRAVELING/PORTABLE EXHIBITS, AND A VARIETY OF IN-PERSON AND ONLINE PROGRAMS DIRECTED TOWARD PEOPLE OF ALL AGES AND BACKGROUNDS, INCLUDING STUDENTS AND TEACHERS ON FIELD TRIPS, FAMILIES, ADULTS WITHOUT CHILDREN, AND TOURISTS FROM ALL OVER THE WORLD.
- $74,299 spent. TRAVELING EXHIBITION: MATH MIDWAY 2 GO (MM2GO.ORG) IS A SPIN-OFF OF MOMATH'S ORIGINAL TRAVELING EXHIBITION (THE MATH MIDWAY). IT CAN BE DEPLOYED AT A VARIETY OF VENUES, INCLUDING SCHOOLS, LIBRARIES, COMMUNITY CENTERS, ETC.
Source: Form 990 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? Passed.
Not on the IRS automatic revocation list.
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 February 2010.
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.
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