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Sigma Delta Tau Society

Eta Corp
  • Livonia, MI
  • Tax-exempt since April 1948
  • EIN: 58-1264332

Organization summary

Type of Nonprofit

Designated as a Social and recreational clubs.

Donations to this organization are not tax deductible.

Summary charts: organization finances over time

Revenue
$120k (2025)

Expenses
$104k (2025)

Total Assets
$315k (2025)

Total Liabilities
$84.8k (2025)

Years with missing data
Source: Form 990 tax filings from 2011 to 2025

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
2025

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$119,938
Expenses
$103,789
Net Income
$16,149
Net Assets
$230,047
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $119,550
99.7%
Investment Income $388
0.3%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $314,821
Total Liabilities $84,774
Net Assets $230,047
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0
Compensation
Key Employees and Officers Compensation Other
Mardi Kunik (Officer) $0 $0
Christina Buschman (President) $0 $0

Document Links

990-EZ
Filed on Nov. 25, 2025

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

View Filing
XML

Fiscal Year Ending June
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$125,850
Expenses
$126,981
Net Income
-$1,131
Net Assets
$213,898
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $125,850
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $331,409
Total Liabilities $117,511
Net Assets $213,898
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0
Compensation
Key Employees and Officers Compensation Other
Mardi Kunik (Officer) $0 $0
Christina Buschman (President) $0 $0

Document Links

990-EZ
Filed on Nov. 21, 2024

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

View Filing
XML

Fiscal Year Ending June
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$50,000
Expenses
$94,101
Net Income
-$44,101
Net Assets
$215,031
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $50,000
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $377,147
Total Liabilities $162,116
Net Assets $215,031
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0
Compensation
Key Employees and Officers Compensation Other
Christina Buschman (Officer) $0 $0
Mardi Kunik (President) $0 $0

Document Links

990-EZ
Filed on May 14, 2024

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

View Filing
XML

Fiscal Year Ending June
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$86,346
Expenses
$59,689
Net Income
$26,657
Net Assets
$284,645
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $86,346
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $446,983
Total Liabilities $162,338
Net Assets $284,645
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$100,000
Expenses
$51,305
Net Income
$48,695
Net Assets
$257,988
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $100,000
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $428,521
Total Liabilities $170,533
Net Assets $257,988
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$40,000
Expenses
$50,497
Net Income
-$10,497
Net Assets
$209,293
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $40,000
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $314,961
Total Liabilities $105,668
Net Assets $209,293
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$40,000
Expenses
$49,751
Net Income
-$9,751
Net Assets
$219,790
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $40,000
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $347,199
Total Liabilities $127,409
Net Assets $219,790
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$64,250
Expenses
$60,016
Net Income
$4,234
Net Assets
$229,543
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $64,250
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $370,175
Total Liabilities $140,632
Net Assets $229,543
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$30,000
Expenses
$41,358
Net Income
-$11,358
Net Assets
$225,310
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $30,000
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $361,363
Total Liabilities $136,053
Net Assets $225,310
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$36,100
Expenses
$20,142
Net Income
$15,958
Net Assets
$236,668
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $36,100
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $237,220
Total Liabilities $552
Net Assets $236,668
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$17,214
Expenses
$19,538
Net Income
-$2,324
Net Assets
$220,710
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $17,214
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $220,710
Total Liabilities $0
Net Assets $220,710
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$23,967
Expenses
$20,416
Net Income
$3,551
Net Assets
$223,034
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $23,967
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $223,034
Total Liabilities $0
Net Assets $223,034
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$25,194
Expenses
$21,601
Net Income
$3,593
Net Assets
$219,483
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $25,194
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $219,483
Total Liabilities $0
Net Assets $219,483
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

Fiscal Year Ending June
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$96,244
Expenses
$20,639
Net Income
$75,605
Net Assets
$215,890
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,832
1.9%
Program Services $94,410
98.1%
Investment Income $2
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $215,890
Total Liabilities $0
Net Assets $215,890
Club or Co-Op Income
Initiation Fees & Contributions $0
Income From Public Use of Club Facilities $0

Document Links

990-EZ

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

PDF

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

990-EZ

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

PDF

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

990-EZ

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

PDF

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

990

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

PDF

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

990

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

PDF

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

990

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

PDF

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

990

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.

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

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About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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