Louise Arnold Maddux Environmental Foundation

Santa Fe, NM
Tax-exempt since Jan. 1993
EIN: 85-0405509

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Type of Nonprofit

Designated as a 501(c)(3) Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Donations to this organization are tax deductible.

Revenue

$26.6k (2024)

Expenses

$43.5k (2024)

Total Assets

$905k (2024)

Total Liabilities

$0 (2024)

Source: Form 990 tax filings from 2011 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Revenue

$26,552

Expenses

$43,483

Net Income

-$16,931

Net Assets

$904,621

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$4	0.0%
Dividends	$26,125	98.4%
Sales of Assets	$423	1.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$38,724	89.1%
Compensation of Officers*	$7,717	17.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$904,621
Total Liabilities	$0
Net Assets	$904,621

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$7,717	$0

990-PF

Filed on May 1, 2025

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

XML

Fiscal Year Ending Dec.
2023

Revenue

$12,000

Expenses

$43,299

Net Income

-$31,299

Net Assets

$773,103

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$9	0.1%
Dividends	$26,033	> 100%
Sales of Assets	-$14,042
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$36,737	84.8%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$773,103
Total Liabilities	$0
Net Assets	$773,103

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$7,850	$0

990-PF

Filed on May 1, 2024

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

Fiscal Year Ending Dec.
2022

Revenue

$112,664

Expenses

$42,979

Net Income

$69,685

Net Assets

$778,688

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$3	0.0%
Dividends	$24,552	21.8%
Sales of Assets	$88,109	78.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$37,848	88.1%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$778,688
Total Liabilities	$0
Net Assets	$778,688

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$8,260	$0

990-PF

Filed on May 3, 2023

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

990-T

For unrelated business income from activities not substantially related to the organization's tax-exempt purpose

PDF

Fiscal Year Ending Dec.
2021

Revenue

$22,293

Expenses

$33,666

Net Income

-$11,373

Net Assets

$821,981

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$1	0.0%
Dividends	$22,435	> 100%
Sales of Assets	-$143
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$29,125	86.5%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$821,981
Total Liabilities	$0
Net Assets	$821,981

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$7,058	$0

990-PF

Filed on May 5, 2022

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

XML

Fiscal Year Ending Dec.
2020

Revenue

$32,334

Expenses

$33,729

Net Income

-$1,395

Net Assets

$703,563

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$2	0.0%
Dividends	$21,808	67.4%
Sales of Assets	$10,524	32.5%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$28,651	84.9%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$703,564
Total Liabilities	$1
Net Assets	$703,563

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$8,000	$0

990-PF

Filed on May 7, 2021

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

XML

Fiscal Year Ending Dec.
2019

Revenue

$24,114

Expenses

$41,997

Net Income

-$17,883

Net Assets

$771,547

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$26	0.1%
Dividends	$23,811	98.7%
Sales of Assets	$277	1.1%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$35,939	85.6%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$771,548
Total Liabilities	$1
Net Assets	$771,547

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$6,577	$0

990-PF

Filed on May 10, 2020

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2018

Revenue

$109,029

Expenses

$37,626

Net Income

$71,403

Net Assets

$649,688

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$26	0.0%
Dividends	$22,281	20.4%
Sales of Assets	$86,722	79.5%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$33,187	88.2%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$649,688
Total Liabilities	$0
Net Assets	$649,688

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$7,072	$0

990-PF

Filed on May 8, 2019

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2017

Revenue

$126,623

Expenses

$42,390

Net Income

$84,233

Net Assets

$709,496

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$100,228	79.2%
Interest Revenue	$2	0.0%
Dividends	$20,257	16.0%
Sales of Assets	$6,136	4.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$38,618	91.1%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$709,496
Total Liabilities	$0
Net Assets	$709,496

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$5,881	$0

990-PF

Filed on May 11, 2018

Primary tax return for a private foundation's activities, finances, and governance

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Schedules ▼

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Fiscal Year Ending Dec.
2016

Revenue

$115,135

Expenses

$29,045

Net Income

$86,090

Net Assets

$586,050

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$99,216	86.2%
Interest Revenue	$1	0.0%
Dividends	$15,525	13.5%
Sales of Assets	$393	0.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,952	89.4%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$586,050
Total Liabilities	$0
Net Assets	$586,050

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$4,820	$0

990-PF

Filed on May 12, 2017

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2015

Revenue

$14,689

Expenses

$26,436

Net Income

-$11,747

Net Assets

$482,047

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$2	0.0%
Dividends	$13,965	95.1%
Sales of Assets	$722	4.9%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$23,041	87.2%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$482,047
Total Liabilities	$0
Net Assets	$482,047

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$5,000	$0

990-PF

Filed on May 13, 2016

Primary tax return for a private foundation's activities, finances, and governance

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Fiscal Year Ending Dec.
2014

Revenue

$35,746

Expenses

$26,531

Net Income

$9,215

Net Assets

$499,720

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$3	0.0%
Dividends	$25,890	72.4%
Sales of Assets	$9,853	27.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$23,703	89.3%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$499,720
Total Liabilities	$0
Net Assets	$499,720

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$4,433	$0

990-PF

Filed on May 11, 2015

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2013

Revenue

$14,295

Expenses

$23,231

Net Income

-$8,936

Net Assets

$443,251

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,000	7.0%
Interest Revenue	$4	0.0%
Dividends	$13,025	91.1%
Sales of Assets	$266	1.9%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$20,557	88.5%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$443,251
Total Liabilities	$0
Net Assets	$443,251

Compensation

Key Employees and Officers	Compensation	Other
Colette Muller Lee (Trustee)	$4,032	$0

990-PF

Filed on May 12, 2014

Primary tax return for a private foundation's activities, finances, and governance

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2012

Revenue

$11,262

Expenses

$24,131

Net Income

-$12,869

Net Assets

$403,180

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$7	0.1%
Dividends	$12,771	> 100%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$21,606	89.5%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$403,181
Total Liabilities	$1
Net Assets	$403,180

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2011

Revenue

$12,048

Expenses

$19,060

Net Income

-$7,012

Net Assets

$368,688

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$19	0.2%
Dividends	$11,992	99.5%
Sales of Assets	$37	0.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$16,564	86.9%
Compensation of Officers*	$0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$368,689
Total Liabilities	$1
Net Assets	$368,688

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

PDF (2 of 2)

Fiscal Year Ending Dec.
2002

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2001

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

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Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

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Updated March 23, 2026

Louise Arnold Maddux Environmental Foundation

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $26.6k (2024)

Expenses $43.5k (2024)

Total Assets $905k (2024)

Total Liabilities $0 (2024)

Tax Filings by Year

Fiscal Year Ending Dec. 2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

990-T

Fiscal Year Ending Dec. 2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

990-T

Fiscal Year Ending Dec. 2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Revenue

$26.6k (2024)

Expenses

$43.5k (2024)

Total Assets

$905k (2024)

Total Liabilities

$0 (2024)

Fiscal Year Ending Dec.
2024

Fiscal Year Ending Dec.
2023

Fiscal Year Ending Dec.
2022

Fiscal Year Ending Dec.
2021

Fiscal Year Ending Dec.
2020

Fiscal Year Ending Dec.
2019

Fiscal Year Ending Dec.
2018

Fiscal Year Ending Dec.
2017

Fiscal Year Ending Dec.
2016

Fiscal Year Ending Dec.
2015

Fiscal Year Ending Dec.
2014

Fiscal Year Ending Dec.
2013

Fiscal Year Ending Dec.
2012

Fiscal Year Ending Dec.
2011

Fiscal Year Ending Dec.
2010

Fiscal Year Ending Dec.
2009

Fiscal Year Ending Dec.
2008

Fiscal Year Ending Dec.
2007

Fiscal Year Ending Dec.
2006

Fiscal Year Ending Dec.
2005

Fiscal Year Ending Dec.
2004

Fiscal Year Ending Dec.
2003

Fiscal Year Ending Dec.
2002

Fiscal Year Ending Dec.
2001