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Mathematical Optimization Society Inc

EIN 23-2161580 · Philadelphia, PA

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthStrong90 out of 100GovernanceGood81 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE SOCIETY IS AN INTERNATIONAL ORGANIZATION DEDICATED TO THE PROMOTION AND MAINTENANCE OF HIGH PROFESSIONAL STANDARDS IN THE SUBJECT OF MATHEMATICAL OPTIMIZATION. IT PUBLISHES THE JOURNALS MATHEMATICAL PROGRAMMING A AND B, CONSISTING OF TECHINCAL ARTICLES ON ALL ASPECTS OF THE SUBJECT, THE JOURNAL MATHEMATICAL PROGRAMMING COMPUTATION, FOR ARTICLES WITH A COMPUTATIONAL FOCUS, THE MOS/SIAM SERIES ON OPTIMIZATION, COMPRISING MONOGRAPHS AND TEXTS ON PARTICULAR OPTIMIZATION TOPICS, AND THE NEWSLETTER OPTIMA. EVERY THREE YEARS THE SOCIETY SPONSORS THE INTERNATIONAL SYMPOSIUM ON MATHEMATICAL PROGRAMMING (ISMP). IN OTHER YEARS, IT SUPPORTS THE CONFERENCE ON INTEGER, PROGRAMMING AND COMBINATORIAL OPTIMIZATION (IPCO) AND THE INTERNATIONAL CONFERENCE ON CONTINUOUS OPTIMIZATION (ICCOPT).

Income
$94,886
Spending
$68,480
Spent on programs
102%
Reserves
Over 10 years of spending
Largest source of income
fees for its services, 60%
Employees
0

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Strong: 90 out of 100.

  • Reserves

    35 of 35

    Spendable reserves would cover more than ten years of spending.

  • Debt

    20 of 20

    It owes 1% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 28% of income.

  • Income trend

    5 of 15

    Income fell 18% on the year before.

  • Spending floor

    15 of 15

    102% of spending went to programs.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Good: 81 out of 100.

  • Independent board

    25 of 25

    7 of 7 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    0 of 8

    Reports no written whistleblower policy.

  • Record keeping policy

    0 of 7

    Reports no written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2024, 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 (1)
  1. $69,641 spent. PREPARE, PUBLISH AND DISTRIBUTE THE SOCIETY'S TECHNICAL JOURNALS. (1) MATHEMATICAL PROGRAMMING A, 6-9 TIMES A YEAR, (2) MATHEMATICAL PROGRAMMING B INTERMITTENTLY, AND (3) MATHEMATICAL PROGRAMMING COMPUTATION INTERMITTENTLY. PREPARE, PUBLISH AND DISTRIBUTE THE SOCIETY'S GENERAL NEWSLETTER OPTIMA.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. 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.

  2. 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.

  3. 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.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since March 1981.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. 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.