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National Speleological Society

EIN 54-6026867 · Huntsville, AL

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

LegitimacyPassesRegistration and standingFinancial healthGood85 out of 100GovernanceWeak21 out of 100Impact evidenceDescribes programsHow well its results are evidenced

Points to look into

  • Only 32% of its spending went to programs.

These come from the organization's own tax return. There may be a good explanation; ask the charity.

What it says it does

THE NSS IS DEDICATED TO THE SCIENTIFIC STUDY OF CAVES AND KARST PROTECTING CAVES THROUGH CONSERVATION OWNERSHIP STEWARDSHIP EDUCATION AND PROMOTING RESPONSIBLE CAVE EXPLORATION CAVER FELLOWSHIP.

Income
$2.4 million
Spending
$1.5 million
Spent on programs
32%
Reserves
88.1 months of spending
Largest source of income
donations and private grants, 46%
Employees
3
Volunteers
100

Source: Form 990 for the year ending March 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Good: 85 out of 100. Higher than 63% of charities in its peer group (recreation and sports, $1m to $10m).

  • Reserves

    35 of 35

    Spendable reserves would cover 88.1 months of spending.

  • Debt

    20 of 20

    It owes 1% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 37% of income.

  • Income trend

    15 of 15

    Income rose 3% on the year before.

  • Spending floor

    0 of 15

    32% of spending went to programs and raising each dollar of donations cost 0 cents.

Source: Form 990 for the year ending March 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Weak: 21 out of 100. Higher than 4% of charities in its peer group (recreation and sports, $1m to $10m).

  • Independent board

    5 of 25

    0 of 12 voting board members are independent.

  • Conflict of interest policy

    0 of 15

    Reports no 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

    0 of 10

    Did not give the board a copy of this return before filing it.

  • Independent check of accounts

    0 of 15

    Its accounts were not audited or reviewed 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 March 31, 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. $324,108 spent. THE NSS HOLDS CONVENTIONS SEMINARS AND CAVE RESCUE TRAINING. THEY PERFORM CAVE RESTORATIONS CAVE CONSERVATION CAVE MANAGEMENT ETC.
  2. $123,326 spent. PERIODIC PUBLICATIONS DISTRIUBTED FREE TO MEMBERS INCLUDING JOURNALS MAGAZINES MANUALS EBSITE AND ANNUAL COMPOILATION OF CAVE ACTIVITIES
  3. $35,036 spent. GRANTS AND AWARDS FOR RESEARCH SCIENCE EDUCATION AND EXPLORATION OF CAVES AND CAVE BIOLOGY

Source: Form 990 for the year ending March 31, 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 March 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 1946.

    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.