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Nonprofit · EIN 13-4256414

LAKE KOSHKONONG WETLAND ASSOCIATION INC

Tax-exempt · FORT ATKINSON, WI 53538

Address and contacts

Address (IRS master file)
N754 WAUBUNSEE TRL, FORT ATKINSON, WI 53538-8700
Mailing address (990-N for 2025)
N754 Waubunsee Trail, Fort Atkinson WI 53538
Principal officer (990-N for 2025)
Justin Shulz, N207 Pottawatomi Trail, Milton WI 53563

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for LAKE KOSHKONONG WETLAND ASSOCIATION INC

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
13-4256414
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2004
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Environment (C05)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Justin Shulz
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Linn Duesterbeck
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Justin Shultz
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Justin Shultz
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Eric Sweeney
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Eric Sweeney
December 31, 2019≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 13-4256414).

Questions about LAKE KOSHKONONG WETLAND ASSOCIATION INC

What is the EIN of LAKE KOSHKONONG WETLAND ASSOCIATION INC?
The employer identification number (EIN) of LAKE KOSHKONONG WETLAND ASSOCIATION INC is 13-4256414.
Is LAKE KOSHKONONG WETLAND ASSOCIATION INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2004.
Are donations to LAKE KOSHKONONG WETLAND ASSOCIATION INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does LAKE KOSHKONONG WETLAND ASSOCIATION INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of LAKE KOSHKONONG WETLAND ASSOCIATION INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did LAKE KOSHKONONG WETLAND ASSOCIATION INC last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of LAKE KOSHKONONG WETLAND ASSOCIATION INC?
The 990-N for 2025 names Justin Shulz.

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