Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 23-7002898

TALL CORN DENTAL SYMPOSIUM

Tax-exempt (reinstated) · MASON CITY, IA 50401

Address and contacts

Address (IRS master file)
1339 6TH ST SW, MASON CITY, IA 50401-4815
In care of
% JON L HARDINGER
Mailing address (990-N for 2025)
1339 6th St SW, Mason City IA 50401
Principal officer (990-N for 2025)
Jon Hardinger, 1339 6th St SW, Mason City IA 50401

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 TALL CORN DENTAL SYMPOSIUM

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

IRS record

EIN
23-7002898
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
2012
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Education (B03)

Revocation and reinstatement

Exemption revoked
May 15, 2011
Posted by the IRS
February 22, 2012
Reinstated
Effective April 15, 2012

From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Jon Hardinger
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Jon Hardinger
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Jon Hardinger
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Jon Hardinger
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: Jon Hardinger
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: Jon Hardinger
December 31, 2018≤ $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 23-7002898).

Questions about TALL CORN DENTAL SYMPOSIUM

What is the EIN of TALL CORN DENTAL SYMPOSIUM?
The employer identification number (EIN) of TALL CORN DENTAL SYMPOSIUM is 23-7002898.
Is TALL CORN DENTAL SYMPOSIUM tax-exempt?
Yes. The IRS revoked its exemption on May 15, 2011 and reinstated it effective April 15, 2012.
Are donations to TALL CORN DENTAL SYMPOSIUM tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does TALL CORN DENTAL SYMPOSIUM file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of TALL CORN DENTAL SYMPOSIUM 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 TALL CORN DENTAL SYMPOSIUM 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 TALL CORN DENTAL SYMPOSIUM?
The 990-N for 2025 names Jon Hardinger.

Other nonprofits in MASON CITY

All nonprofits in MASON CITY · Iowa · Education