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MONTANA OUTDOOR SCIENCE SCHOOL

EIN 81-0503944 BOZEMAN, MT

Revenue 2024
$293,939
Expenses 2024
$312,289

Program services were 59.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
O20
Classification
2000
Street
PO BOX 502

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

To inspire curiosity, awareness, and understanding of nature and science through quality educational experiences.

  • MOSS offered 50 outdoor science education summer camps to K-9 students in Gallatin and Park counties to 550 participants. These camps provided 19,500 hours of exploring science concepts in the outdoors and 24 families received scholarships to attend camps.

    Expenses $184,564

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Chris Plaut

    President

    Total calculated
    $0
    Hours/week
    1

  • Eric Lammers

    Treasurer

    Total calculated
    $0
    Hours/week
    1

  • Dani Aravich

    Secretary

    Total calculated
    $0
    Hours/week
    1

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $293,939
    Expenses
    $312,289
    Contributions
    $68,433
    Grants paid
    $0
  • 2023
    Revenue
    $576,758
    Expenses
    $881,167
    Contributions
    $180,975
    Grants paid
    $0
  • 2022
    Revenue
    $693,827
    Expenses
    $865,812
    Contributions
    $240,289
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $847,039
    Expenses
    $698,558
    Assets (EOY)
    $687,850

  • 2020 · 990

    Revenue
    $759,236
    Expenses
    $448,587
    Assets (EOY)
    $593,653

  • 2019 · 990

    Revenue
    $294,560
    Expenses
    $288,705
    Assets (EOY)
    $314,737

  • 2015 · 990

    Revenue
    $290,616
    Expenses
    $323,767
    Assets (EOY)
    $102,472

  • 2014 · 990

    Revenue
    $270,188
    Expenses
    $276,507
    Assets (EOY)
    $129,697

  • 2013 · 990

    Revenue
    $206,856
    Expenses
    $251,310
    Assets (EOY)
    $140,177

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $204,440
    Assets (EOY)
    $171,625

  • 2011 · 990-EZ

    Revenue
    $160,060
    Expenses
    $249,129
    Assets (EOY)
    $174,090

  • 2010 · 990

    Revenue
    not reported
    Expenses
    $330,256
    Assets (EOY)
    $256,451

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2024 return

Declared as related by

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 29 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.