Nonprofit · EIN 04-2621726
SYNTHESIS CENTER INC
Tax-exempt · AMHERST, MA 01002
Address and contacts
- Address (IRS master file)
- 285 POMEROY LN, AMHERST, MA 01002-2906
- Mailing address (990-N for 2024)
- 285 Pomeroy Lane, Amherst MA 01002
- Principal officer (990-N for 2024)
- Thaddeus Slawski, 285 Pomeroy Lane, Amherst MA 01002
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-N on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-N on file |
IRS record
- EIN
- 04-2621726
- 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
- 1978
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-N for 2024 Officer: Thaddeus Slawski | December 31, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2023 Officer: Dorothy Firman | December 31, 2023 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-EZ | December 2018 | – | – | – | IRS |
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 04-2621726).
Questions about SYNTHESIS CENTER INC
- What is the EIN of SYNTHESIS CENTER INC?
- The employer identification number (EIN) of SYNTHESIS CENTER INC is 04-2621726.
- Is SYNTHESIS CENTER INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1978.
- Are donations to SYNTHESIS CENTER INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SYNTHESIS CENTER INC file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of SYNTHESIS CENTER INC due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SYNTHESIS CENTER INC last file with the IRS?
- The latest return in the IRS public files is the 990-N for 2024 for the year ended December 31, 2024.
- Who is the principal officer of SYNTHESIS CENTER INC?
- The 990-N for 2024 names Thaddeus Slawski.
Other nonprofits in AMHERST
- TRUSTEES OF AMHERST COLLEGE EIN 04-2103542 · last filed 990 for 2025
- HAMPSHIRE COLLEGE TRUSTEES EIN 04-6130872 · last filed 990 for 2025
- UNIVERSITY OF MASSACHUSETTS AMHERST FOUNDATION INC EIN 54-2084125 · last filed 990 for 2025
- NATIONAL YIDDISH BOOK CENTER INC EIN 04-2708878 · last filed 990 for 2025
- CHARTERED ALTERNATIVE INVESTMENT ANALYST ASSOCIATION INC EIN 37-1428113 · last filed 990 for 2024
- PEACE DEVELOPMENT FUND INC EIN 04-2738794 · last filed 990 for 2025
- STAVROS CENTER FOR INDEPENDENT LIVING INC EIN 51-0172014 · last filed 990 for 2025
- FIVE COLLEGES INCORPORATED EIN 04-6134696 · last filed 990 for 2025