Closing or Merging a Nonprofit: Your Final Form 990
Dissolving or merging your nonprofit takes more than a board vote. Here's what the final Form 990 has to show, and why mistakes made at closing are hard to undo.
How to Reach the Right IRS Office the First Time: A Guide for Nonprofits
Nonprofits have two IRS phone numbers, not one. Learn which to call for exempt status vs. e-file issues, and what to have ready before you dial.
The Public Support Test, Explained: How Schedule A Protects Your Nonprofits Tax Exempt Status
Every organization that applies for 501(c)(3) status starts out classified as a private foundation in the eyes of the IRS — a designation that comes with stricter rules, higher taxes, and less flexibility. Schedule A and the public support test are how your organization proves otherwise, demonstrating year after year that it's accountable to a broad public rather than a handful of funders. Here's how the test works, why one large gift won't disqualify you, and what's at stake if you fail it.
What to Do If Your Determination Letter Has an Error or the Wrong Effective Date
Your IRS determination letter proves your 501(c)(3) status to donors, grant makers, and state agencies — so a misspelled name, wrong EIN, or off effective date is worth fixing. Here's what each error can mean, and how to correct it.
Form 990-T Supplemental Forms: Form 4562, 4797, 8949, 8995 and 3800 Explained
Form 990-T rarely stands alone. Here's a plain-English breakdown of the five supplemental forms — 4562, 4797, 8949, 8995, and 3800 — that most often accompany it, and when each one applies.
501(c)(3) vs. Other 501(c) and 509 Classifications: Which Fits Your Organization?
Not every tax-exempt organization is a 501(c)(3) — here's how the IRS classifications differ, and why choosing the right one protects an organization's mission long after the application is filed.
How to Complete the Balance Sheet on Form 990-PF
Form 990-PF's Balance Sheet asks private foundations for a detailed look at assets, liabilities, and net assets — at both book and fair market value. Here's how Part II breaks down, line by line, and what determines which columns your foundation needs to complete.
2026 Nonprofit Webinars You Won’t Want To Miss
Tax990's latest webinar learning opportunities for nonprofits.
IRS Form 1024: Who Files It, and How to Apply for Recognition of Exemption
If your organization falls outside 501(c)(3) and 501(c)(4), Form 1024 — not Form 1023 — is your path to IRS-recognized tax-exempt status. Here's what it covers and how to file.
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