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Organization for Tropical Studies Inc

EIN 56-2125831 · Durham, NC

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

LegitimacyPassesRegistration and standingFinancial healthGood75 out of 100GovernanceStrong100 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE ORGANIZATION FOR TROPICAL STUDIES, INC. (OTS) IS CHARTERED AS A NON PROFIT CORPORATION UNDER THE LAWS OF NORTH CAROLINA AND IS SUPPORTED BY A CONSORTIUM OF INSTITUTIONS OF HIGHER LEARNING IN NORTH, CENTRAL, AND SOUTH AMERICA, AUSTRALIA, AND SOUTH AFRICA. OTS'S PURPOSE IS TO SUSTAIN TROPICAL ECOSYSTEMS BY DRIVING SCIENTIFIC DISCOVERY AND KNOWLEDGE, BY ENRICHING HUMAN PERCEPTION OF NATURE, AND BY ENHANCING WORLDWIDE POLICY IN THE TROPICS.

Income
$9.7 million
Spending
$8.8 million
Spent on programs
83%
Reserves
1.6 months of spending
Largest source of income
donations and private grants, 61%
Employees
9
Volunteers
25
Highest pay
$110,530, chief administrative officer

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: 75 out of 100. Higher than 47% of charities in its peer group (international, $1m to $10m).

  • Reserves

    10 of 35

    Spendable reserves would cover 1.6 months of spending.

  • Debt

    20 of 20

    It owes 6% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 9% of income.

  • Income trend

    15 of 15

    Income rose 5% on the year before.

  • Spending floor

    15 of 15

    83% of spending went to programs and raising each dollar of donations cost 6 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 65% of charities in its peer group (international, $1m to $10m).

  • Independent board

    25 of 25

    15 of 16 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a 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.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    15 of 15

    Its accounts were audited by an independent accountant.

  • No reported misuse

    10 of 10

    Reports 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)
  1. $3.3 million spent. FACILITATED RESEARCH AND CONSERVATION: THE ORGANIZATION RECEIVES GRANTS AND CONTRACTS TO SUPPORT SCIENTIFIC RESEARCH AT ITS FIELD STATIONS AND CONSERVATION PROJECTS AT, AND IN THE VICINITY OF, ITS FIELD STATIONS.
  2. $3.0 million spent. FIELD STATIONS: THE ORGANIZATION OPERATES THREE BIOLOGICAL FIELD STATIONS IN DIVERSE ECOLOGICAL ZONES OF COSTA RICA (LA SELVA, LAS CRUCES, AND PALO VERDE) AND ONE IN KRUGER NATIONAL PARK, SOUTH AFRICA. THESE FIELD STATIONS ARE MAINTAINED TO FACILITATE BIOLOGICAL RESEARCH AND TO CONDUCT EDUCATIONAL PROGRAMS.
  3. $1.1 million spent. EDUCATIONAL PROGRAMS: THE ORGANIZATION CONDUCTS A NUMBER OF EDUCATIONAL PROGRAMS, INCLUDING GRADUATE COURSES FOR ACADEMIC CREDIT AND UNDERGRADUATE SEMESTER- ABROAD PROGRAMS FOR ACADEMIC CREDIT. THE ORGANIZATION HAS OFFERED MID-CAREER PROFESSIONAL TRAINING FOR U.S. AND LATIN AMERICAN OFFICIALS AND POLICY- MAKERS, SHORT EXCURSIONS LED BY SCIENTISTS FOR MEMBERS OF THE PUBLIC IN COSTA RICA, AND PROGRAMS FOR PRIMARY AND SECONDARY SCHOOL TEACHERS.

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

  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 November 6, 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 June 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 June 1999.

    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 November 4, 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.