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

Nonprofit · EIN 83-1807740

MTM EDUCATIONAL RESOURCES

Tax-exempt · SIOUX FALLS, SD 57106

Address and contacts

Address (IRS master file)
4418 S TECHNOLOGY DR, SIOUX FALLS, SD 57106-4236
Mailing address (990-N for 2025)
4418 S Technology Dr, Sioux Falls SD 57106
Principal officer (990-N for 2025)
Monroe Diefendorf, 12 Waylor Lane, Laurel Hollow NY 11791

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 MTM EDUCATIONAL RESOURCES

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

IRS record

EIN
83-1807740
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2019
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Monroe Diefendorf
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Monroe Diefendorf
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: MONROE DIEFENDORF
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: MONROE DIEFENDORF JR
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Monroe Diefendorf
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Monroe Diefendorf
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 83-1807740).

Questions about MTM EDUCATIONAL RESOURCES

What is the EIN of MTM EDUCATIONAL RESOURCES?
The employer identification number (EIN) of MTM EDUCATIONAL RESOURCES is 83-1807740.
Is MTM EDUCATIONAL RESOURCES tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2019.
Are donations to MTM EDUCATIONAL RESOURCES tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MTM EDUCATIONAL RESOURCES file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of MTM EDUCATIONAL RESOURCES 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 MTM EDUCATIONAL RESOURCES 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 MTM EDUCATIONAL RESOURCES?
The 990-N for 2025 names Monroe Diefendorf.

Other nonprofits in SIOUX FALLS

All nonprofits in SIOUX FALLS · South Dakota · Community improvement and capacity building