Oconomowoc Historical Society Inc

Oconomowoc, WI
Tax-exempt since Jan. 1983
EIN: 39-1376661

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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

$103k (2024)

Expenses

$70.8k (2024)

Total Assets

$810k (2024)

Total Liabilities

$2.17k (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 Oct.
2024

Revenue

$102,876

Expenses

$70,757

Net Income

$32,119

Net Assets

$807,668

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$88,538	86.1%
Program Services	$13,094	12.7%
Investment Income	$0
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$1,244	1.2%

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$33,805	47.8%

Assets/Debt
Total Assets	$809,839
Total Liabilities	$2,171
Net Assets	$807,668

Compensation

Key Employees and Officers	Compensation	Related	Other
Robert Duffy (President)	$0	$0	$0
Edwin Johnson (Treasurer)	$0	$0	$0
Charles Laabs (Vice Preside)	$0	$0	$0
Kathy Strauss (Secretary)	$0	$0	$0

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990

Filed on Feb. 20, 2025

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending Oct.
2023

Revenue

$65,806

Expenses

$63,120

Net Income

$2,686

Net Assets

$711,080

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$47,228	71.8%
Program Services	$4,277	6.5%
Investment Income	$5,135	7.8%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$9,166	13.9%
Net Inventory Sales	$0
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$27,378	43.4%

Assets/Debt
Total Assets	$711,080
Total Liabilities	$0
Net Assets	$711,080

Compensation

Key Employees and Officers	Compensation	Related	Other
Robert Duffy (President)	$0	$0	$0
Ed Johnson (Treasurer)	$0	$0	$0
Charles Laabs (Vice Preside)	$0	$0	$0
Kathy Strauss (Secretary)	$0	$0	$0

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990

Filed on Nov. 14, 2024

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending Oct.
2022

Revenue

$64,505

Expenses

$86,262

Net Income

-$21,757

Net Assets

$688,157

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$56,528	87.6%
Program Services	$5,164	8.0%
Investment Income	$9	0.0%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$2,804	4.3%
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	$6,103	7.1%

Assets/Debt
Total Assets	$688,157
Total Liabilities	$0
Net Assets	$688,157

Compensation

Key Employees and Officers	Compensation	Related	Other
Sandie Carter (Past Preside)	$0	$0	$0
Mac Dorn (Director)	$0	$0	$0
Robert Duffy (Vice Preside)	$0	$0	$0
Ed Johnson (Treasurer)	$0	$0	$0
Charles Laabs (President)	$0	$0	$0
Robert Lex (Secrectary)	$0	$0	$0

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990

Filed on Feb. 8, 2023

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending Oct.
2021

Revenue

$86,463

Expenses

$66,999

Net Income

$19,464

Net Assets

$787,636

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$35,736	41.3%
Program Services	$0
Investment Income	$50,727	58.7%
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	$10,082	15.0%
Professional Fundraising Fees	$0
Other Salaries and Wages	$5,603	8.4%

Assets/Debt
Total Assets	$787,636
Total Liabilities	$0
Net Assets	$787,636

Compensation

Key Employees and Officers	Compensation	Related	Other
Sandie Carter (Past Preside)	$0	$0	$0
Mac Dorn (Director)	$0	$0	$0
Robert Duffy (Vice Preside)	$0	$0	$0
Ed Johnson (Treasurer)	$0	$0	$0
Charles Laabs (President)	$0	$0	$0
Robert Lex (Secrectary)	$0	$0	$0

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990

Filed on March 10, 2022

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing

Schedules ▼

XML

Fiscal Year Ending Oct.
2019

Revenue

$66,409

Expenses

$128,617

Net Income

-$62,208

Net Assets

$757,945

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$66,294	99.8%
Program Services	$0
Investment Income	$115	0.2%
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	$6,045	4.7%

Assets/Debt
Total Assets	$757,945
Total Liabilities	$0
Net Assets	$757,945

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2018

Revenue

$51,985

Expenses

$83,181

Net Income

-$31,196

Net Assets

$798,429

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$51,850	99.7%
Program Services	$0
Investment Income	$135	0.3%
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	$5,899	7.1%

Assets/Debt
Total Assets	$798,429
Total Liabilities	$0
Net Assets	$798,429

The IRS has provided extracted financial data for this filing, but has not yet released the source documents.

Fiscal Year Ending Oct.
2017

Revenue

$84,309

Expenses

$98,426

Net Income

-$14,117

Net Assets

$829,625

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$53,232	63.1%
Program Services	$0
Investment Income	$0
Bond Proceeds	$27,350	32.4%
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$3,727	4.4%
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$5,466	5.6%

Assets/Debt
Total Assets	$829,625
Total Liabilities	$0
Net Assets	$829,625

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2016

Revenue

$79,670

Expenses

$62,500

Net Income

$17,170

Net Assets

$841,835

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$79,648	100.0%
Program Services	$0
Investment Income	$22	0.0%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$22	0.0%
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$4,806	7.7%

Assets/Debt
Total Assets	$841,835
Total Liabilities	$0
Net Assets	$841,835

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

PDF (2 of 2)

Fiscal Year Ending Oct.
2015

Revenue

$211,750

Expenses

$67,325

Net Income

$144,425

Net Assets

$820,165

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$209,555	99.0%
Program Services	$0
Investment Income	$14	0.0%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$4,124	1.9%
Sales of Assets	$0
Net Inventory Sales	$721	0.3%
Other Revenue	-$2,664

Notable Expenses		Percent of Total Expenses
Executive Compensation	$0
Professional Fundraising Fees	$0
Other Salaries and Wages	$409	0.6%

Assets/Debt
Total Assets	$820,165
Total Liabilities	$0
Net Assets	$820,165

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

PDF (2 of 2)

Fiscal Year Ending Oct.
2014

Revenue

$51,059

Expenses

$113,113

Net Income

-$62,054

Net Assets

$675,740

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$47,997	94.0%
Program Services	$0
Investment Income	$3,062	6.0%
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	$675,740
Total Liabilities	$0
Net Assets	$675,740

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2013

Revenue

$69,287

Expenses

$54,102

Net Income

$15,185

Net Assets

$333,697

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$64,620	93.3%
Program Services	$0
Investment Income	$603	0.9%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$798	1.2%
Other Revenue	$0

Assets/Debt
Total Assets	$333,697
Total Liabilities	$0
Net Assets	$333,697

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2012

Revenue

$52,201

Expenses

$67,568

Net Income

-$15,367

Net Assets

$305,497

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$44,978	86.2%
Program Services	$0
Investment Income	$652	1.2%
Net Fundraising	$2,852	5.5%
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$305,497
Total Liabilities	$0
Net Assets	$305,497

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2011

Revenue

$104,084

Expenses

$55,556

Net Income

$48,528

Net Assets

$316,118

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$95,527	91.8%
Program Services	$0
Investment Income	$788	0.8%
Net Fundraising	$3,119	3.0%
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$316,118
Total Liabilities	$0
Net Assets	$316,118

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2010

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

Fiscal Year Ending Oct.
2008

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

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

Primary tax return for a nonprofit’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

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Updated December 22, 2025

Oconomowoc Historical Society Inc

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $103k (2024)

Expenses $70.8k (2024)

Total Assets $810k (2024)

Total Liabilities $2.17k (2024)

Tax Filings by Year

Fiscal Year Ending Oct. 2024

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Oct. 2023

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Oct. 2022

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Oct. 2021

Extracted Financial Data

Extracted Financial Data from Form 990

Compensation

Document Links

990

Fiscal Year Ending Oct. 2019

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Dec. 2018

Extracted Financial Data

Extracted Financial Data from Form 990

No Document Links

Fiscal Year Ending Oct. 2017

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Oct. 2016

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Oct. 2015

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Oct. 2014

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Oct. 2013

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2012

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Oct. 2011

Extracted Financial Data

Extracted Financial Data from 990-EZ

Document Links

990-EZ

Fiscal Year Ending Dec. 2010

No Extracted Financial Data

Document Links

Revenue

$103k (2024)

Expenses

$70.8k (2024)

Total Assets

$810k (2024)

Total Liabilities

$2.17k (2024)

Fiscal Year Ending Oct.
2024

Fiscal Year Ending Oct.
2023

Fiscal Year Ending Oct.
2022

Fiscal Year Ending Oct.
2021

Fiscal Year Ending Oct.
2019

Fiscal Year Ending Dec.
2018

Fiscal Year Ending Oct.
2017

Fiscal Year Ending Oct.
2016

Fiscal Year Ending Oct.
2015

Fiscal Year Ending Oct.
2014

Fiscal Year Ending Oct.
2013

Fiscal Year Ending Oct.
2012

Fiscal Year Ending Oct.
2011

Fiscal Year Ending Dec.
2010

Fiscal Year Ending Oct.
2010

Fiscal Year Ending Oct.
2009

Fiscal Year Ending Oct.
2008

Fiscal Year Ending Oct.
2007

Fiscal Year Ending Oct.
2006

Fiscal Year Ending Oct.
2005

Fiscal Year Ending Oct.
2004

Fiscal Year Ending Oct.
2003

Fiscal Year Ending Oct.
2002

Fiscal Year Ending Oct.
2001