Which Form 990 Does a Nonprofit Need to File?

Step 1: Confirm You're Not in the Narrow Exempt Category

Before looking at size thresholds, check whether your organization falls into the small group that's generally not required to file an annual return or notice at all: churches, their integrated auxiliaries, and conventions or associations of churches. This is a narrow exception; most other religiously affiliated nonprofits, schools, and charitable organizations connected to a religious mission still have to file some version of Form 990 even though churches themselves don't.

Step 2: Confirm Whether You're a Private Foundation

If your organization is classified as a private foundation, rather than a public charity, the size-based thresholds below don't apply to you at all; you file Form 990-PF every year regardless of your gross receipts or total assets. Whether you're a private foundation or a public charity is determined separately, generally based on how broadly your funding comes from the public versus a small number of sources, and is reflected in your IRS determination letter and your Form 990's Schedule A.

Step 3: If You're a Public Charity, Check Your Gross Receipts and Assets

For organizations that aren't churches and aren't private foundations, the form you file depends on your actual gross receipts and total assets for the year, per the IRS's Form 990 series guidance:

• Gross receipts normally $50,000 or less: you can file Form 990-N, the e-Postcard.
• Gross receipts under $200,000 and total assets under $500,000: you can file Form 990-EZ, or the full Form 990 if you prefer.
• Gross receipts of $200,000 or more, or total assets of $500,000 or more: you must file the full Form 990.

Check both figures each year; crossing either threshold moves you up to the full Form 990 for that year, even if you filed a simpler form the year before.

Step 4: Check Whether You Need Form 990-T as Well

Form 990-T is a separate, additional return, not a substitute for your regular annual return. If your organization has $1,000 or more of gross income from a trade or business that's regularly carried on and not substantially related to your exempt purpose, you file Form 990-T to report and potentially pay unrelated business income tax, on top of whichever Form 990 version your size otherwise requires.

Step 5: Check Whether a Group Return Applies to You

Some organizations are part of a group exemption, where a central organization holds a group ruling covering itself and a number of subordinate organizations with the same purposes, generally operating under its general supervision. In that situation, the central organization can file a single group return covering itself and qualifying subordinates, rather than each subordinate filing its own separate Form 990. If your organization is a subordinate under someone else's group exemption, check with that central organization about whether you're included in its group return or need to file your own.

Step 6: Confirm Your Specific Deadline

Whichever form applies, it's generally due on the 15th day of the fifth month after the end of your organization's accounting period, the same return-due-date rule across all versions, with an available extension if you need more time.

Putting the Decision Tree Together

In order: rule out the narrow church exception, confirm whether you're a private foundation (if so, file Form 990-PF and stop here), then check your gross receipts and total assets to land on Form 990-N, Form 990-EZ, or the full Form 990, and separately check whether Form 990-T applies on top of whichever base form you file. An organization that works through these steps each year, rather than assuming last year's answer still applies, avoids filing the wrong version.

Your Determination Letter Tells You Your Classification, Not Your Size Tier

Your IRS determination letter establishes whether you're a public charity or a private foundation, which is a different question from which size-based form (990-N, 990-EZ, or 990) you file in a given year. Keep both pieces of information straight, since confusing them can lead to filing the wrong form entirely.

A Subordinate Organization Should Confirm Its Group Return Status Directly

Don't assume you're automatically covered by a parent organization's group return just because you're affiliated with it. Confirm directly with the central organization whether your specific organization is included for the year in question, since coverage can change.

Filing the Wrong Form Doesn't Satisfy Your Requirement

If your organization's actual gross receipts or assets put it above the threshold for the form you filed, filing that smaller form doesn't count as meeting your requirement; the IRS can treat the correct, larger return as not filed. When your numbers are close to a threshold, confirm the calculation carefully before filing.

This Is Not Tax Advice

Determining your organization's private foundation or public charity status, whether a group return covers you, and whether a specific revenue stream creates unrelated business income are fact-specific questions. A tax professional experienced with exempt organizations can confirm which form, or forms, your organization actually needs each year.