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San Mateo Arboretum Society Inc

Organization summary

Type of Nonprofit

Designated as a 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.

Category: Environmental Quality, Protection and Beautification / Botanical Gardens, Arboreta and Botanical Organizations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$124k (2024)

Expenses
$107k (2024)

Total Assets
$234k (2024)

Total Liabilities
$4.14k (2024)

Years with missing data
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 June
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$124,003
Expenses
$107,352
Net Income
$16,651
Net Assets
$229,676
Notable Sources of Revenue Percent of Total Revenue
Contributions $27,260
22.0%
Program Services $3,256
2.6%
Investment Income $2,186
1.8%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $32,489
26.2%
Other Revenue $51,851
41.8%
Assets/Debt
Total Assets $233,815
Total Liabilities $4,139
Net Assets $229,676
Compensation
Key Employees and Officers Compensation Other
Kevin Wilkinson (President/Director) $0 $0
Linda Caswell (Secretary/Director) $0 $0
Cathy Steffen (Treasurer/Director) $0 $0
Virginia Soletti (Director) $0 $0
Irv Agard (Director) $0 $0
Robert Dahut (Director) $0 $0
Amanda Withrow (Director) $0 $0
Gene Fleet (Director) $0 $0

Document Links

Fiscal Year Ending June
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$99,735
Expenses
$78,914
Net Income
$20,821
Net Assets
$213,026
Notable Sources of Revenue Percent of Total Revenue
Contributions $28,110
28.2%
Program Services $1,640
1.6%
Investment Income $2,676
2.7%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $30,397
30.5%
Other Revenue $29,320
29.4%
Assets/Debt
Total Assets $215,178
Total Liabilities $2,152
Net Assets $213,026
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Kevin Wilkinson (President/Director) $0 $0
Linda Caswell (Secretary/Director) $0 $0
Cathy Steffen (Treasurer/Director) $0 $0
Virginia Soletti (Director) $0 $0
Irv Agard (Director) $0 $0
Amanda Withrow (Director) $0 $0
Carmen Mahood (Director) $0 $0

Document Links

Fiscal Year Ending June
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$95,963
Expenses
$74,774
Net Income
$21,189
Net Assets
$192,219
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,057
10.5%
Program Services $1,639
1.7%
Investment Income $156
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $41,006
42.7%
Other Revenue $34,436
35.9%
Assets/Debt
Total Assets $194,322
Total Liabilities $2,103
Net Assets $192,219
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Carol Callison (President/Director) $0 $0
Linda Caswell (Director) $0 $0
Judith Paton (Director) $0 $0
Cathy Steffen (Treasurer) $0 $0
Carmen Mahood (Director) $0 $0
Kevin Wilkinson (Vice President) $0 $0
Virginia Soletti (Director) $0 $0
Irv Agard (Director) $0 $0

Document Links

Fiscal Year Ending June
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$84,282
Expenses
$118,580
Net Income
-$34,298
Net Assets
$170,885
Notable Sources of Revenue Percent of Total Revenue
Contributions $13,349
15.8%
Program Services $2,075
2.5%
Investment Income $178
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $50,502
59.9%
Other Revenue $9,762
11.6%
Assets/Debt
Total Assets $172,774
Total Liabilities $1,889
Net Assets $170,885
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Carol Callison (President/Director) $0 $0
Linda Caswell (Director) $0 $0
Judith Paton (Director) $0 $0
Cathy Steffen (Treasurer) $0 $0
Carmen Mahood (Director) $0 $0
Kevin Wilkinson (Vice President) $0 $0
Virginia Soletti (Director) $0 $0

Document Links

Fiscal Year Ending June
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$57,308
Expenses
$56,156
Net Income
$1,152
Net Assets
$347,471
Notable Sources of Revenue Percent of Total Revenue
Contributions $15,318
26.7%
Program Services $2,010
3.5%
Investment Income $715
1.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $24,755
43.2%
Other Revenue $9,450
16.5%
Assets/Debt
Total Assets $347,993
Total Liabilities $522
Net Assets $347,471
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Carol Callison (President/Director) $0 $0
Linda Caswell (Director) $0 $0
Judith Paton (Director) $0 $0
Cathy Steffen (Treasurer) $0 $0
Carrie Ewing (Director) $0 $0
Cathy Steffen (Treasurer/Director) $0 $0

Document Links

Fiscal Year Ending June
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$58,893
Expenses
$43,222
Net Income
$15,671
Net Assets
$297,802
Notable Sources of Revenue Percent of Total Revenue
Contributions $18,446
31.3%
Program Services $23,722
40.3%
Investment Income $297
0.5%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $7,484
12.7%
Other Revenue $2,759
4.7%
Assets/Debt
Total Assets $298,403
Total Liabilities $601
Net Assets $297,802
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Carol Callison (Director) $0 $0
Linda Caswell (President/Sec) $0 $0
Laura Komar (Director) $0 $0
Sandra Charles (Treasurer) $0 $0
Carrie Ewing (Director) $0 $0

Document Links

Fiscal Year Ending June
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$34,049
Expenses
$31,010
Net Income
$3,039
Net Assets
$282,131
Notable Sources of Revenue Percent of Total Revenue
Contributions $8,627
25.3%
Program Services $3,523
10.3%
Investment Income $226
0.7%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $12,338
36.2%
Other Revenue $3,350
9.8%
Assets/Debt
Total Assets $282,901
Total Liabilities $770
Net Assets $282,131
Compensation
Key Employees and Officers Compensation Other
Gene Fleet (Director) $0 $0
Carol Callison (Fundraising) $0 $0
Linda Caswell (President) $0 $0
Laura Komar (Director) $0 $0
Sandra Charles (Treasurer) $0 $0
Carrie Ewing (President) $0 $0

Document Links

Fiscal Year Ending June
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$64,296
Expenses
$34,309
Net Income
$29,987
Net Assets
$279,092
Notable Sources of Revenue Percent of Total Revenue
Contributions $24,518
38.1%
Program Services $24,944
38.8%
Investment Income $187
0.3%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $9,433
14.7%
Other Revenue $360
0.6%
Assets/Debt
Total Assets $279,517
Total Liabilities $425
Net Assets $279,092
Compensation
Key Employees and Officers Compensation Other
Brian Ayer (President) $0 $0
Carol Callison (Director) $0 $0
Linda Caswell (Secretary) $0 $0
Sandra Charles (Treasurer) $0 $0

Document Links

Fiscal Year Ending June
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$49,629
Expenses
$32,804
Net Income
$16,825
Net Assets
$249,105
Notable Sources of Revenue Percent of Total Revenue
Contributions $13,683
27.6%
Program Services $16,706
33.7%
Investment Income $183
0.4%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $10,972
22.1%
Other Revenue $2,305
4.6%
Assets/Debt
Total Assets $249,473
Total Liabilities $368
Net Assets $249,105
Compensation
Key Employees and Officers Compensation Other
Brian Ayer (President) $0 $0
Carol Callison (Director) $0 $0
Linda Caswell (Secretary) $0 $0
Sandra Charles (Treasurer) $0 $0

Document Links

Fiscal Year Ending June
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$64,176
Expenses
$34,294
Net Income
$29,882
Net Assets
$218,292
Notable Sources of Revenue Percent of Total Revenue
Contributions $32,105
50.0%
Program Services $13,097
20.4%
Investment Income $222
0.3%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $12,007
18.7%
Other Revenue $2,140
3.3%
Assets/Debt
Total Assets $218,782
Total Liabilities $490
Net Assets $218,292

Document Links

Fiscal Year Ending June
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$37,995
Expenses
$24,630
Net Income
$13,365
Net Assets
$188,410
Notable Sources of Revenue Percent of Total Revenue
Contributions $11,924
31.4%
Program Services $7,564
19.9%
Investment Income $428
1.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $11,009
29.0%
Other Revenue $1,855
4.9%
Assets/Debt
Total Assets $188,831
Total Liabilities $421
Net Assets $188,410

Document Links

Fiscal Year Ending June
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$34,609
Expenses
$31,736
Net Income
$2,873
Net Assets
$175,332
Notable Sources of Revenue Percent of Total Revenue
Contributions $465
1.3%
Program Services $15,645
45.2%
Investment Income $452
1.3%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $10,099
29.2%
Other Revenue $1,655
4.8%
Assets/Debt
Total Assets $175,804
Total Liabilities $472
Net Assets $175,332

Document Links

Fiscal Year Ending June
2010

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2009

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2008

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2007

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2006

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2005

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2004

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2003

No Extracted Financial Data

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

Document Links

Fiscal Year Ending June
2002

No Extracted Financial Data

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

Document Links

About 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.

Which Organizations Are Here?

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 »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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