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Chapel Of The Air Inc

Dba Mainstay Ministries
  • Wheaton, IL
  • Tax-exempt since Aug. 1997
  • EIN: 36-2277348

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.

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$120k (2025)

Expenses
$94.5k (2025)

Total Assets
$44.8k (2025)

Total Liabilities
$0 (2025)

Source: Form 990 tax filings from 2012 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 May
2025

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$119,907
Expenses
$94,537
Net Income
$25,370
Net Assets
$44,797
Notable Sources of Revenue Percent of Total Revenue
Contributions $119,373
99.6%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $44,797
Total Liabilities $0
Net Assets $44,797
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $40,417 $0
Karen Mains (Co Exec Dir) $17,160 $0
Loren Oury (Board Member) $0 $0
Linda Oury (Board Member) $0 $0
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Document Links

990-EZ
Filed on Nov. 6, 2025

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

View Filing
XML

Fiscal Year Ending May
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$92,210
Expenses
$102,648
Net Income
-$10,438
Net Assets
$19,427
Notable Sources of Revenue Percent of Total Revenue
Contributions $92,163
99.9%
Program Services $0
Investment Income $47
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $19,427
Total Liabilities $0
Net Assets $19,427
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $39,726
Karen Mains (Co Exec Dir) $0 $16,740
Bruce Duncan (Board Member) $0 $0
Melissa Timberlake (Board Member) $0 $0
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Document Links

990-EZ
Filed on Aug. 30, 2024

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

View Filing
XML

Fiscal Year Ending May
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$112,663
Expenses
$106,094
Net Income
$6,569
Net Assets
$29,865
Notable Sources of Revenue Percent of Total Revenue
Contributions $112,640
100.0%
Program Services $0
Investment Income $23
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $30,104
Total Liabilities $239
Net Assets $29,865
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $36,660
Karen Mains (Co Exec Dir) $0 $17,580
Bruce Duncan (Board Member) $0 $0
Melissa Timberlake (Board Member) $0 $0
+ View more people

Document Links

990-EZ
Filed on Oct. 10, 2023

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

View Filing
PDF XML

Fiscal Year Ending May
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$108,157
Expenses
$107,776
Net Income
$381
Net Assets
$23,296
Notable Sources of Revenue Percent of Total Revenue
Contributions $108,157
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $23,493
Total Liabilities $197
Net Assets $23,296
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $37,365
Karen Mains (Co Exec Dir) $0 $15,900

Document Links

990-EZ
Filed on Sept. 6, 2022

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

View Filing
XML

Fiscal Year Ending May
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$114,273
Expenses
$69,609
Net Income
$44,664
Net Assets
$22,915
Notable Sources of Revenue Percent of Total Revenue
Contributions $114,273
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $23,359
Total Liabilities $444
Net Assets $22,915
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Sept. 7, 2021

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

View Filing
PDF XML

Fiscal Year Ending May
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$113,231
Expenses
$37,756
Net Income
$75,475
Net Assets
-$21,749
Notable Sources of Revenue Percent of Total Revenue
Contributions $113,231
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $16,015
Total Liabilities $37,764
Net Assets -$21,749
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Sept. 15, 2020

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

View Filing
XML

Fiscal Year Ending May
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$99,511
Expenses
$29,960
Net Income
$69,551
Net Assets
-$97,224
Notable Sources of Revenue Percent of Total Revenue
Contributions $99,511
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $6,601
Total Liabilities $103,825
Net Assets -$97,224
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Sept. 13, 2019

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

View Filing
PDF XML

Fiscal Year Ending May
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$95,558
Expenses
$29,668
Net Income
$65,890
Net Assets
-$166,775
Notable Sources of Revenue Percent of Total Revenue
Contributions $95,558
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $3,511
Total Liabilities $170,286
Net Assets -$166,775
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo Exec Dir) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Sept. 18, 2018

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

View Filing
XML

Fiscal Year Ending May
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$113,720
Expenses
$44,895
Net Income
$68,825
Net Assets
-$232,665
Notable Sources of Revenue Percent of Total Revenue
Contributions $113,720
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $4,755
Total Liabilities $237,420
Net Assets -$232,665
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo. Exec Di) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Nov. 13, 2017

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

View Filing
PDF XML

Fiscal Year Ending May
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$146,666
Expenses
$92,185
Net Income
$54,481
Net Assets
-$301,490
Notable Sources of Revenue Percent of Total Revenue
Contributions $146,666
100%
Program Services $0
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $4,871
Total Liabilities $306,361
Net Assets -$301,490
Compensation
Key Employees and Officers Compensation Other
David Mains (Ceo. Exec Dir) $0 $0
Karen Mains (Co Exec Dir) $0 $0

Document Links

990-EZ
Filed on Jan. 13, 2017

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

View Filing
PDF XML

Fiscal Year Ending May
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$212,766
Expenses
$112,108
Net Income
$100,658
Net Assets
-$355,971
Notable Sources of Revenue Percent of Total Revenue
Contributions $212,766
100%
Program Services $0
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 $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $29,774
26.6%
Assets/Debt
Total Assets $11,951
Total Liabilities $367,922
Net Assets -$355,971
Other
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
David Mains (Ceo. Exec Dir) $0 $0 $0
Karen Mains (Co Exec Dir) $0 $0 $0

Document Links

990
Filed on Dec. 9, 2015

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

View Filing
PDF XML

Fiscal Year Ending May
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$158,220
Expenses
$72,917
Net Income
$85,303
Net Assets
-$456,629
Notable Sources of Revenue Percent of Total Revenue
Contributions $159,566
> 100%
Program Services $0
Investment Income $65
0.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales -$1,411
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $25,083
34.4%
Assets/Debt
Total Assets $10,198
Total Liabilities $466,827
Net Assets -$456,629
Other
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
David Mains (Ceo. Exec Dir) $0 $0 $0
Karen Mains (Co Exec Dir) $0 $0 $0

Document Links

990
Filed on Sept. 16, 2014

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

View Filing
PDF XML

Fiscal Year Ending May
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$174,345
Expenses
$96,401
Net Income
$77,944
Net Assets
-$541,940
Notable Sources of Revenue Percent of Total Revenue
Contributions $173,975
99.8%
Program Services $0
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $1,410
0.8%
Other Revenue -$1,040
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $13,869
14.4%
Assets/Debt
Total Assets $6,459
Total Liabilities $548,399
Net Assets -$541,940

Document Links

990
Filed on March 14, 2014

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

View Filing
PDF XML

Fiscal Year Ending May
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$551,680
Expenses
$141,643
Net Income
$410,037
Net Assets
-$620,184
Notable Sources of Revenue Percent of Total Revenue
Contributions $185,611
33.6%
Program Services $356,577
64.6%
Investment Income $991
0.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $6,500
1.2%
Net Inventory Sales $53
0.0%
Other Revenue $1,948
0.4%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $35,426
25.0%
Assets/Debt
Total Assets $5,378
Total Liabilities $625,562
Net Assets -$620,184

Document Links

990

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

PDF

Fiscal Year Ending May
2011

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
990-T

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

PDF

Fiscal Year Ending May
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

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

PDF
990-T

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

PDF

Fiscal Year Ending May
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

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

PDF
990-T

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

PDF

Fiscal Year Ending May
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
PDF (2 of 2)

Fiscal Year Ending May
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 May
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 May
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

Fiscal Year Ending May
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

990

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

PDF

Fiscal Year Ending May
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

990

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

PDF

Fiscal Year Ending May
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

990

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

PDF

Fiscal Year Ending May
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

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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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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