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SOUTHWEST IMPROVEMENT COUNCIL INC

EIN 74-2510477 DENVER, CO

Revenue 2025
$384,351
Expenses 2025
$628,496

Program services were 85.6% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
P200
Classification
1000
Street
5045 W 1ST AVE

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).

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • DONNA ZIMMERMAN

    EXECUTIVE DIRECTOR

    Total calculated
    $94,528
    From this org
    $80,027
    From related orgs
    $0
    Other
    $14,501
    Hours/week
    50

  • TONY OUM

    PRESIDENT

    Total calculated
    $0
    Hours/week
    2

  • BENJAMIN CHEANG

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • MARY LOU VIGIL

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • KIRBY CULBERTSON

    DIRECTOR

    Total calculated
    $1,097
    From this org
    $1,097
    From related orgs
    $0
    Other
    $0
    Hours/week
    1

  • RODOLFORUDY GARZA

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • BRIANNA TANCHER

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • SUSAN ARCHULETA

    DIRECTOR

    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

  • 2025
    Revenue
    $384,351
    Expenses
    $628,496
    Contributions
    $313,358
    Grants paid
    $0
  • 2024
    Revenue
    $513,867
    Expenses
    $648,486
    Contributions
    $436,084
    Grants paid
    $0
  • 2023
    Revenue
    $2,572,646
    Expenses
    $718,731
    Contributions
    $2,469,168
    Grants paid
    $0
  • 2022
    Revenue
    $568,603
    Expenses
    $538,069
    Contributions
    $464,338
    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.

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 2025 return

Declared as related by

Taxable family

From Schedule R Parts I, III and IV: entities that legally are the filer, and taxable partnerships, corporations and trusts it is related to. These record ownership and control, not shared board members or money.

Disregarded entities on its 2025 return

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 10 September 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 IRS Business Master File ingested 5 October 2026, which is when the registration facts above were last refreshed for every organization. Returns through tax year 2025, the newest we have parsed for this organization.