Skip to content
ProPublica Donate
ProPublica Donate

Society For Freshwater Science

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: Science and Technology Research Institutes, Services N.E.C. (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$254k (2023)

Expenses
$330k (2023)

Total Assets
$2.23M (2023)

Total Liabilities
$0 (2023)

Source: Form 990 tax filings from 2011 to 2023

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.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$253,622
Expenses
$329,551
Net Income
-$75,929
Net Assets
$2,226,117
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,237
4.0%
Program Services $167,047
65.9%
Investment Income $78,110
30.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$1,772
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $2,226,117
Total Liabilities $0
Net Assets $2,226,117
Compensation
Key Employees and Officers Compensation Related Other
David Arscott (Past Edc Cha) $0 $0 $0
Zanethia Barnett (Non Academic) $0 $0 $0
Amy Burgin (Pubcomm Chai) $0 $0 $0
Anna Hamilton (Fincomm Chai) $0 $0 $0
Erin Hotchkiss (Vice Preside) $0 $0 $0
Sherri Johnson (President) $0 $0 $0
Lauren Kinsman Costello (Acedemic Rep) $0 $0 $0
John Kominoski (Past Vice Pr) $0 $0 $0
Andreas Leidolf (Executive Di) $0 $0 $0
Peter Levi (Treasurer) $0 $0 $0
Eugenia Marti (Secretary) $0 $0 $0
Katherine O'reilly (Pip Rep) $0 $0 $0
Ann Marie Reinhold (Early Career) $0 $0 $0
Steven Thomas (Past Preside) $0 $0 $0
Erasme Uyizeye (Intl. Delega) $0 $0 $0
Anna Vincent (Src Rep) $0 $0 $0
Wil Wolheim (Vice Preside) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$389,506
Expenses
$334,236
Net Income
$55,270
Net Assets
$2,106,239
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,221
0.3%
Program Services $291,963
75.0%
Investment Income $86,202
22.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $10,120
2.6%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $2,106,239
Total Liabilities $0
Net Assets $2,106,239
Compensation
Key Employees and Officers Compensation Related Other
Zanethia Barnett (Non Academic) $0 $0 $0
Amy Burgin (Pubcomm Chai) $0 $0 $0
Betsy Colburn (Fincomm Chai) $0 $0 $0
Anna Hamilton (Fincomm Chai) $0 $0 $0
Roger Haro (Past Edc Cha) $0 $0 $0
Erin Hotchkiss (Chair Of Fin) $0 $0 $0
Sheri Johnson (President El) $0 $0 $0
Lauren Kinsman Costello (Acedemic Rep) $0 $0 $0
John Konimoski (Vice Preside) $0 $0 $0
Andreas Leidolf (Executive Di) $0 $0 $0
Peter Levi (Treasurer) $0 $0 $0
Jonathan Lopez (Src Rep) $0 $0 $0
Eugenia Marti (Secretary) $0 $0 $0
Ashley Moerke (Past Preside) $0 $0 $0
Katherine O'reilly (Pip Rep) $0 $0 $0
Ann Marie Reinhold (Early Career) $0 $0 $0
Allison Roy (Past Vice Pr) $0 $0 $0
Steven Thomas (President) $0 $0 $0
Erasme Uyizeye (Intl. Delega) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$353,965
Expenses
$158,010
Net Income
$195,955
Net Assets
$2,423,266
Notable Sources of Revenue Percent of Total Revenue
Contributions $825
0.2%
Program Services $222,393
62.8%
Investment Income $108,177
30.6%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $22,570
6.4%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $2,423,266
Total Liabilities $0
Net Assets $2,423,266
Compensation
Key Employees and Officers Compensation Related Other
Betsy Colburn (Chair Of Fin) $0 $0 $0
Checo Colon Gaud (Vice Preside) $0 $0 $0
Sally Entrekin (Secretary) $0 $0 $0
Kathijo Jankowski (Non Academic) $0 $0 $0
Andy Leidolf (Executive Di) $0 $0 $0
Peter Levi (Treasurer) $0 $0 $0
Ashley Moerke (President El) $0 $0 $0
Katherine O'reilly (Pip Represen) $0 $0 $0
Alonso Ramirez (President) $0 $0 $0
Allison Roy (Vice Preside) $0 $0 $0
Mazeika Sullivan (Past Chair E) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$224,155
Expenses
$166,936
Net Income
$57,219
Net Assets
$2,129,032
Notable Sources of Revenue Percent of Total Revenue
Contributions $9,086
4.1%
Program Services $151,982
67.8%
Investment Income $71,739
32.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$8,652
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $2,129,032
Total Liabilities $0
Net Assets $2,129,032
Compensation
Key Employees and Officers Compensation Related Other
Betsy Colburn (Chair Of Fin) $0 $0 $0
Checo Colon Gaud (Vice Preside) $0 $0 $0
Sally Entrekin (Secretary) $0 $0 $0
Kathijo Jankowski (Non Academic) $0 $0 $0
Andy Leidolf (Executive Di) $0 $0 $0
Peter Levi (Treasurer) $0 $0 $0
Ashley Moerke (President El) $0 $0 $0
Katherine O'reilly (Pip Represen) $0 $0 $0
Alonso Ramirez (President) $0 $0 $0
Allison Roy (Vice Preside) $0 $0 $0
Mazeika Sullivan (Past Chair E) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$388,982
Expenses
$270,456
Net Income
$118,526
Net Assets
$1,988,880
Notable Sources of Revenue Percent of Total Revenue
Contributions $20,115
5.2%
Program Services $216,964
55.8%
Investment Income $157,924
40.6%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$6,021
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,988,880
Total Liabilities $0
Net Assets $1,988,880
Compensation
Key Employees and Officers Compensation Related Other
Michelle Baker (Pub. Committ) $0 $0 $0
Colden Baxter (Past Preside) $0 $0 $0
Betsy Colburn (Finance Comm) $0 $0 $0
Dr Sally A Entrekin (Secretary) $0 $0 $0
Dr Stuart Eg Findlay (Nonacademic) $0 $0 $0
Bob Hall (Vice Preside) $0 $0 $0
Amy Marcarelli (Past Vice Pr) $0 $0 $0
Patina Mendez (Past Chair E) $0 $0 $0
Amy Rosemond (President ) $0 $0 $0
Todd Royer (Vice Preside) $0 $0 $0
Andrew Sanders (Src Delegate) $0 $0 $0
Elizabeth Sudduth (Academic Del) $0 $0 $0
Dr Michael C Swift (Treasurer) $0 $0 $0
Dr Jennifer L Tank (President) $0 $0 $0
Pedro Javier Torres (Early Career) $0 $0 $0
Dr J Angus Webb (Internationa) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$324,963
Expenses
$330,401
Net Income
-$5,438
Net Assets
$1,743,054
Notable Sources of Revenue Percent of Total Revenue
Contributions $12,397
3.8%
Program Services $234,277
72.1%
Investment Income $78,289
24.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,743,054
Total Liabilities $0
Net Assets $1,743,054
Compensation
Key Employees and Officers Compensation Related Other
Dr Jennifer L Tank (President El) $0 $0 $0
Dr Emily S Bernhardt (Past Preside) $0 $0 $0
Dr Michael C Swift (Treasurer) $0 $0 $0
Dr Sally A Entrekin (Secretary) $0 $0 $0
Dr Steven A Thomas (Past Vice Pr) $0 $0 $0
Dr Stuart Eg Findlay (Nonacademic) $0 $0 $0
Dr Colden V Baxter (President) $0 $0 $0
Dr Amy M Marcarelli (Vice Preside) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr J Angus Webb (Internationa) $0 $0 $0
Dr Darrin Hunt (Graduate Stu) $0 $0 $0
Dr Natalie A Griffiths (Ecc Represen) $0 $0 $0
Dr Walter K Dodds (Academic Rep) $0 $0 $0
Chuck Hawkins (Pub. Committ) $0 $0 $0
Todd Royer (Vice Preside) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$411,119
Expenses
$422,157
Net Income
-$11,038
Net Assets
$1,899,811
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,645
2.6%
Program Services $329,235
80.1%
Investment Income $71,239
17.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,899,811
Total Liabilities $0
Net Assets $1,899,811
Compensation
Key Employees and Officers Compensation Related Other
Dr Jennifer L Tank (President El) $0 $0 $0
Dr Emily S Bernhardt (Past Preside) $0 $0 $0
Dr Michael C Swift (Treasurer) $0 $0 $0
Dr Sally A Entrekin (Secretary) $0 $0 $0
Dr Steven A Thomas (Past Vice Pr) $0 $0 $0
Dr Stuart Eg Findlay (Nonacademic) $0 $0 $0
Dr Colden V Baxter (President) $0 $0 $0
Dr Amy M Marcarelli (Vice Preside) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr J Angus Webb (Internationa) $0 $0 $0
Dr Darrin Hunt (Graduate Stu) $0 $0 $0
Dr Natalie A Griffiths (Ecc Represen) $0 $0 $0
Dr Walter K Dodds (Academic Rep) $0 $0 $0
Michelle Baker (Pub. Committ) $0 $0 $0
Andy Leidolf (Executive Di) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$436,575
Expenses
$312,422
Net Income
$124,153
Net Assets
$1,820,432
Notable Sources of Revenue Percent of Total Revenue
Contributions $11,247
2.6%
Program Services $340,249
77.9%
Investment Income $85,079
19.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,820,432
Total Liabilities $0
Net Assets $1,820,432
Compensation
Key Employees and Officers Compensation Related Other
Dr Colden V Baxter (President) $0 $0 $0
Dr Jennifer L Tank (President El) $0 $0 $0
Dr Emily S Bernhardt (Past Preside) $0 $0 $0
Dr Michael C Swift (Treasurer) $0 $0 $0
Dr Sally A Entrekin (Secretary) $0 $0 $0
Dr Steven A Thomas (Past Vice Pr) $0 $0 $0
Dr Todd V Royer (Vice Preside) $0 $0 $0
Dr Stuart Eg Findlay (Board Member) $0 $0 $0
Dr Amy M Marcarelli (Vice Preside) $0 $0 $0
Dr Charles P Hawkins (Board Member) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr J Angus Webb (Board Member) $0 $0 $0
Dr Darrin Hunt (Board Member) $0 $0 $0
Dr Natalie A Griffiths (Board Member) $0 $0 $0
Dr Walter K Dodds (Board Memebe) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$317,119
Expenses
$299,893
Net Income
$17,226
Net Assets
$1,696,279
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,047
3.2%
Program Services $324,644
> 100%
Investment Income -$17,572
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,696,279
Total Liabilities $0
Net Assets $1,696,279
Compensation
Key Employees and Officers Compensation Related Other
Dr Michael C Swift St Olaf College (Treasurer) $0 $0 $0
Dr Susan B Norton Us Environmental Protection Agency (Secretary) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr Dave Strayer (Past Preside) $0 $0 $0
Dr Michelle Baker (Board Member) $0 $0 $0
Dr Mike Paul (Board Member) $0 $0 $0
Dr Chris Robinson (Board Member) $0 $0 $0
Dr Matt R Whiles (President) $0 $0 $0
Dr Emma Rosi Marshall (Vice Preside) $0 $0 $0
Dr Chuck Hawkin (Board Member) $0 $0 $0
Dr Emily Bernhardt (President El) $0 $0 $0
Dr Steve Thomas (Board Member) $0 $0 $0
Dr Natalie Griffiths (Board Member) $0 $0 $0
Dr Walter Dodds (Board Memebe) $0 $0 $0
Dr Petra Kranzfelder (Board Member) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$499,978
Expenses
$328,031
Net Income
$171,947
Net Assets
$1,679,053
Notable Sources of Revenue Percent of Total Revenue
Contributions $11,068
2.2%
Program Services $444,179
88.8%
Investment Income $44,731
8.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,679,053
Total Liabilities $0
Net Assets $1,679,053
Compensation
Key Employees and Officers Compensation Related Other
Dr Michael C Swift St Olaf College (Treasurer) $0 $0 $0
Dr Susan B Norton Us Environmental Protection Agency (Secretary) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr Randy Fuller (Past Preside) $0 $0 $0
Dr Brian Shelley (Ast To The P) $0 $0 $0
Dr Dave Strayer (President) $0 $0 $0
Dr Michelle Baker (Board Member) $0 $0 $0
Dr Al Steinman (Board Member) $0 $0 $0
Dr David Costello (Board Member) $0 $0 $0
Dr Mike Paul (Board Member) $0 $0 $0
Dr Chris Robinson (Board Member) $0 $0 $0
Dr Matt R Whiles (President El) $0 $0 $0
Dr Emma Rosi Marshall (Board Member) $0 $0 $0
Dr Dustin Kincaid (Board Member) $0 $0 $0
Dr Chuck Hawkin (Board Member) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$600,866
Expenses
$477,183
Net Income
$123,683
Net Assets
$1,507,106
Notable Sources of Revenue Percent of Total Revenue
Contributions $35,745
5.9%
Program Services $470,249
78.3%
Investment Income $94,872
15.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,528,154
Total Liabilities $21,048
Net Assets $1,507,106
Compensation
Key Employees and Officers Compensation Related Other
Dr David Penrose (Past Preside) $0 $0 $0
Dr Gerald Jacobi () $0 $0 $0
Dr Michael C Swift St Olaf College (Treasurer) $0 $0 $0
Dr Susan B Norton Us Environmental Protection Agency (Secretary) $0 $0 $0
Dr Paul Wagner () $0 $0 $0
Dr Checo Colon Gaud () $0 $0 $0
Dr Jack Feminella (Publications) $0 $0 $0
Dr Kim H Haag (Finance Comm) $0 $0 $0
Dr Randy Fuller (President) $0 $0 $0
Dr Brian Shelley (Ast To The P) $0 $0 $0
Dr Dave Strayer (President El) $0 $0 $0
Dr Aj Reisinger (Student Reso) $0 $0 $0
Dr Michelle Baker (Boad Member) $0 $0 $0
Dr Al Steinman (Board Member) $0 $0 $0
Dr David Costello (Board Member) $0 $0 $0
Dr Mike Paul (Board Member) $0 $0 $0
Dr Chris Robinson (Board Member) $0 $0 $0

Document Links

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$546,029
Expenses
$435,725
Net Income
$110,304
Net Assets
$1,383,423
Notable Sources of Revenue Percent of Total Revenue
Contributions $18,446
3.4%
Program Services $412,432
75.5%
Investment Income $115,151
21.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,475,756
Total Liabilities $92,333
Net Assets $1,383,423

Document Links

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$309,977
Expenses
$314,586
Net Income
-$4,609
Net Assets
$1,273,119
Notable Sources of Revenue Percent of Total Revenue
Contributions $14,524
4.7%
Program Services $286,688
92.5%
Investment Income $8,765
2.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $1,348,232
Total Liabilities $75,113
Net Assets $1,273,119

Document Links

Fiscal Year Ending Dec.
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 Dec.
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 Dec.
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 Dec.
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 Dec.
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 Dec.
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 Dec.
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 Dec.
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 Dec.
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

Fiscal Year Ending Dec.
2001

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.

API

The data powering this website is available programmatically, via an API. Read the API documentation »