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International Society for the Study of Xenobiotics

EIN 22-2432063 · Washington, DC

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

LegitimacyPassesRegistration and standingFinancial healthGood72 out of 100GovernanceStrong100 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

ISSX IS AN INTERNATIONAL ASSOCIATION OF SCIENTISTS THAT PROMOTES THE UNDERSTANDING OF THE INTERACTIONS OF MEDICINES AND CHEMICALS WITH LIVING SYSTEMS.

Income
$1.2 million
Spending
$1.2 million
Spent on programs
76%
Reserves
6.8 months of spending
Largest source of income
fees for its services, 91%
Employees
0
Volunteers
11

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

Good: 72 out of 100. Higher than 46% of charities in its peer group (science, $1m to $10m).

  • Reserves

    28 of 35

    Spendable reserves would cover 6.8 months of spending.

  • Debt

    16 of 20

    It owes 21% of what it owns.

  • Living within its means

    8 of 15

    Spending exceeded income by 4% of income.

  • Income trend

    5 of 15

    Income fell 17% on the year before.

  • Spending floor

    15 of 15

    76% of spending went to programs and raising each dollar of donations cost 0 cents.

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

Governance

Strong: 100 out of 100. Higher than 68% of charities in its peer group (science, $1m to $10m).

  • Independent board

    25 of 25

    10 of 10 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.

  • 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 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 (3)
  1. $842,983 spent. SCIENTIFIC MEETINGS - ISSX ORGANIZES DOMESTIC AND INTERNATIONAL SCIENTIFIC MEETINGS TO BRING TOGETHER RESEARCHERS TO ADVANCE THEIR KNOWLEDGE ON THE INTERPLAY OF LIVING SYSTEMS WITH MEDICINES AND CHEMICALS.
  2. $62,132 spent. OTHER PROGRAMS - ISSX AWARD PROGRAMS RECOGNIZE SCIENTIFIC AND SERVICE ACHIEVEMENTS THROUGH THE INTERNATIONAL DISTINGUISHED SCIENTIFIC ACHIEVEMENT AND DISTINGUISHED SERVICE AWARDS, THE REGIONAL SCIENTIFIC AND NEW INVESTIGATOR AWARDS, AND OTHER ACTIVITIES TO PROMOTE RESEARCH AND THE DISSEMINATION OF INFORMATION CONCERNING THE INTERPLAY OF LIVING SYSTEMS WITH MEDICINES AND CHEMICALS.
  3. $37,354 spent. LEADERSHIP - ISSX FOSTERS AND ENCOURAGES THE EXCHANGE OF INFORMATION AMONGST RESEARCHERS ON INTERDISCIPLINARY AND INNOVATIVE SCIENCE RELATED TO THE DISPOSITION, METABOLISM, AND BIOLOGICAL EFFECTS OF DRUGS AND OTHER XENOBIOTICS THROUGH SEMINARS AND WORKSHOPS.

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 September 7, 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 September 30, 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 September 10, 2026.

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

    Most recent return on file covers the year ending December 2024.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

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

    Recognized by the IRS since April 1984.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 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 7, 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.