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Isthmus Montessori Academy Inc

  • Madison, WI
  • Tax-exempt since July 2013
  • EIN: 45-4480175

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: Educational Institutions and Related Activities / Kindergarten, Preschool, Nursery School, Early Admissions (NTEE)

Donations to this organization are tax deductible.

Details

According to its July 2024 tax filing, this nonprofit:

Operated a school
Organization is a school. Details are reported on Schedule E.

Summary charts: organization finances over time

Revenue
$3.57M (2024)

Expenses
$3.63M (2024)

Total Assets
$4.22M (2024)

Total Liabilities
$3.3M (2024)

Source: Form 990 tax filings from 2013 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 July
2024

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$3,565,056
Expenses
$3,626,559
Net Income
-$61,503
Net Assets
$922,210
Notable Sources of Revenue Percent of Total Revenue
Contributions $55,712
1.6%
Program Services $3,654,301
> 100%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$182,410
Net Inventory Sales $0
Other Revenue $37,453
1.1%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $2,052,851
56.6%
Assets/Debt
Total Assets $4,223,704
Total Liabilities $3,301,494
Net Assets $922,210
Other
Operated a school
Compensation
Key Employees and Officers Compensation Related Other
Hanif Nu Man (Director) $0 $0 $0
Carol Hicks (Director) $0 $0 $0
Benedict Moudry (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Melissa Droessler (Co Founder) $0 $0 $0
Carrie Marlette (Co Founder) $0 $0 $0
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Document Links

990
Filed on March 4, 2025

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

View Filing
XML

Fiscal Year Ending July
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$3,427,023
Expenses
$3,064,576
Net Income
$362,447
Net Assets
$986,017
Notable Sources of Revenue Percent of Total Revenue
Contributions $55,100
1.6%
Program Services $3,363,969
98.2%
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 $7,954
0.2%
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $1,536,415
50.1%
Assets/Debt
Total Assets $4,390,192
Total Liabilities $3,404,175
Net Assets $986,017
Other
Operated a school
Compensation
Key Employees and Officers Compensation Related Other
Troy Vosseller (Director) $0 $0 $0
Hanif Nu Man (Director) $0 $0 $0
Allyn Travis (Director) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Melissa Droessler (Co Founder) $0 $0 $0
Carrie Marlette (Co Founder) $0 $0 $0
+ View more people

Document Links

990
Filed on June 3, 2024

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

View Filing
XML

Fiscal Year Ending July
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,989,344
Expenses
$3,241,041
Net Income
-$251,697
Net Assets
$623,570
Notable Sources of Revenue Percent of Total Revenue
Contributions $35,002
1.2%
Program Services $2,946,197
98.6%
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 $8,145
0.3%
Notable Expenses Percent of Total Expenses
Executive Compensation $206,250
6.4%
Professional Fundraising Fees $0
Other Salaries and Wages $1,268,510
39.1%
Assets/Debt
Total Assets $1,356,154
Total Liabilities $732,584
Net Assets $623,570
Other
Operated a school
Compensation
Key Employees and Officers Compensation Related Other
Jessi Wortman (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Melissa Droessler (Co Founder) $0 $0 $0
Carrie Marlette (Co Founder) $0 $0 $0
+ View more people

Document Links

990
Filed on May 12, 2023

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

View Filing
XML

Fiscal Year Ending July
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,822,282
Expenses
$2,482,839
Net Income
$339,443
Net Assets
$875,267
Notable Sources of Revenue Percent of Total Revenue
Contributions $81,953
2.9%
Program Services $2,739,437
97.1%
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 $892
0.0%
Notable Expenses Percent of Total Expenses
Executive Compensation $206,250
8.3%
Professional Fundraising Fees $0
Other Salaries and Wages $1,029,488
41.5%
Assets/Debt
Total Assets $1,658,457
Total Liabilities $783,190
Net Assets $875,267
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Jessi Wortman (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Melissa Droessler (Co Founder) $0 $0 $0
Carrie Marlette (Co Founder) $0 $0 $0
+ View more people

Document Links

990
Filed on June 15, 2022

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

View Filing
XML

Fiscal Year Ending July
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,874,348
Expenses
$2,524,521
Net Income
$349,827
Net Assets
$432,038
Notable Sources of Revenue Percent of Total Revenue
Contributions $54,933
1.9%
Program Services $2,819,031
98.1%
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 $384
0.0%
Notable Expenses Percent of Total Expenses
Executive Compensation $237,506
9.4%
Professional Fundraising Fees $0
Other Salaries and Wages $1,127,546
44.7%
Assets/Debt
Total Assets $1,341,624
Total Liabilities $909,586
Net Assets $432,038
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Co Founder) $116,000 $0 $5,506
Carrie Marlette (Co Founder) $116,000 $0 $0
Jessi Wortman (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Oscar Mireles (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on Dec. 14, 2020

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

View Filing
PDF XML

Fiscal Year Ending July
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,725,122
Expenses
$2,843,596
Net Income
-$118,474
Net Assets
$82,211
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,978,012
72.6%
Program Services $747,110
27.4%
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 $1,294,517
45.5%
Assets/Debt
Total Assets $1,067,168
Total Liabilities $984,957
Net Assets $82,211
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Officer) $0 $0 $0
Carrie Marlette (Officer) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Ingrid Anderssen (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Guy Mueller (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on June 11, 2020

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

View Filing
PDF XML

Fiscal Year Ending July
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$862,674
Expenses
$891,712
Net Income
-$29,038
Net Assets
$245,047
Notable Sources of Revenue Percent of Total Revenue
Contributions $20,757
2.4%
Program Services $841,917
97.6%
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 $128,334
14.4%
Professional Fundraising Fees $0
Other Salaries and Wages $425,782
47.7%
Assets/Debt
Total Assets $742,433
Total Liabilities $497,386
Net Assets $245,047

Document Links

990

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

PDF

Fiscal Year Ending Aug.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$884,970
Expenses
$776,522
Net Income
$108,448
Net Assets
$274,085
Notable Sources of Revenue Percent of Total Revenue
Contributions $13,615
1.5%
Program Services $871,355
98.5%
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 $85,000
10.9%
Professional Fundraising Fees $0
Other Salaries and Wages $372,757
48.0%
Assets/Debt
Total Assets $447,355
Total Liabilities $173,270
Net Assets $274,085
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Officer) $0 $0 $0
Carrie Marlette (Officer) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Ingrid Anderssen (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Guy Mueller (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on May 15, 2018

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

View Filing
PDF XML

Fiscal Year Ending Aug.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$619,280
Expenses
$538,962
Net Income
$80,318
Net Assets
$165,637
Notable Sources of Revenue Percent of Total Revenue
Contributions $12,519
2.0%
Program Services $606,761
98.0%
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 $68,992
12.8%
Professional Fundraising Fees $0
Other Salaries and Wages $236,262
43.8%
Assets/Debt
Total Assets $457,578
Total Liabilities $291,941
Net Assets $165,637
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Officer) $0 $0 $0
Carrie Marlette (Officer) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Ingrid Anderssen (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Guy Mueller (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on June 30, 2017

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

View Filing
PDF XML

Fiscal Year Ending Aug.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$477,396
Expenses
$430,570
Net Income
$46,826
Net Assets
$86,376
Notable Sources of Revenue Percent of Total Revenue
Contributions $10,549
2.2%
Program Services $466,847
97.8%
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 $67,992
15.8%
Professional Fundraising Fees $0
Other Salaries and Wages $204,981
47.6%
Assets/Debt
Total Assets $193,358
Total Liabilities $106,982
Net Assets $86,376
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Officer) $0 $0 $0
Carrie Marlette (Officer) $0 $0 $0
Jessi Wortman (Director) $0 $0 $0
Ingrid Anderssen (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
Guy Mueller (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on July 5, 2016

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

View Filing
PDF XML

Fiscal Year Ending Aug.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$339,780
Expenses
$294,370
Net Income
$45,410
Net Assets
$39,550
Notable Sources of Revenue Percent of Total Revenue
Contributions $9,449
2.8%
Program Services $330,331
97.2%
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 $72,332
24.6%
Professional Fundraising Fees $0
Other Salaries and Wages $110,407
37.5%
Assets/Debt
Total Assets $153,935
Total Liabilities $114,385
Net Assets $39,550
Other
Operated a school
Reported conflict of interest transactions
Compensation
Key Employees and Officers Compensation Related Other
Melissa Droessler (Officer) $36,166 $0 $0
Carrie Marlette (Officer) $36,166 $0 $0
Jessi Wortman (Director) $0 $0 $0
Ingrid Anderssen (Director) $0 $0 $0
Troy Vosseller (Director) $0 $0 $0
+ View more people

Document Links

990
Filed on June 4, 2015

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

View Filing
PDF XML

Fiscal Year Ending Aug.
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$182,510
Expenses
$194,391
Net Income
-$11,881
Net Assets
-$51,239
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $182,510
100%
Investment Income $0
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $41,927
Total Liabilities $93,166
Net Assets -$51,239

Document Links

990-EZ
Filed on July 21, 2014

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

View Filing
PDF XML

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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