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What CTSOs Need to Know About IRS Form 990

If your state CTSO holds 501(c)(3) or 501(c)(6) tax-exempt status, the IRS Form 990 is one of the most important financial documents you'll file every year. Miss it, file the wrong version, or submit it late — and you're looking at penalties, loss of good standing, or in extreme cases, automatic revocation of your tax-exempt status. That's not a recoverable situation for a state chapter.

This guide breaks down everything a state CTSO leadership team — advisers, executive directors, and treasurers — needs to understand about the 990.

What Is Form 990?

Form 990 is an annual information return that tax-exempt organizations file with the IRS. Unlike a tax return for a for-profit company, the 990 isn't about paying taxes — it's about transparency. The IRS requires it to verify that your organization is still operating in line with its exempt purpose, and the public can request a copy of it at any time.

For CTSOs, this matters a lot. Your state chapter likely receives dues from local chapters, grant funding from state agencies, and income from conference registrations. All of that gets reported on the 990. Donors, state education departments, and national associations often review these filings before entering into agreements with your chapter.

Which Version Does Your CTSO File?

There are three versions of the 990, and which one you file depends on your organization's gross receipts and total assets:

• Form 990-N (e-Postcard) — For organizations with gross receipts normally ≤ $50,000. It's a simple online filing with basic information only.
• Form 990-EZ — For organizations with gross receipts < $200,000 and total assets < $500,000. A shorter version of the full 990.
• Form 990 — For organizations with gross receipts ≥ $200,000 or total assets ≥ $500,000. This is the full return, with schedules.

Most state-level CTSOs — particularly those running multiple conferences and managing dues from hundreds of local chapters — will land on the full Form 990. California HOSA, for example, processes thousands of member registrations annually and operates at a scale that requires the complete return along with several supplemental schedules.

Filing the wrong version is a common mistake. Filing a 990-EZ when your gross receipts exceed the threshold isn't just an error — it's a misrepresentation to the IRS. Always confirm which version applies before you start.

When Is It Due?

The 990 is due the 15th day of the 5th month after your organization's fiscal year ends. For most CTSOs operating on a July 1 – June 30 fiscal year, that means the deadline is November 15.

If you need more time, you can file Form 8868 to get an automatic 6-month extension — pushing your deadline to May 15. But this only extends the filing deadline, not any payment obligations.

Missing the deadline entirely carries real consequences. Organizations that fail to file for three consecutive years automatically lose their tax-exempt status. Reinstatement is possible, but it's a lengthy and costly process. Don't let it get there.

What Gets Reported — and Why It's Tricky for CTSOs

The full Form 990 asks for detailed financial information that goes well beyond a basic income statement. Here's what's typically covered:

• Revenue breakdown — dues, conference income, grants, investment income, other sources
• Expense breakdown — program services, management, fundraising
• Balance sheet — assets, liabilities, net assets
• Governance — board composition, conflicts of interest policies, key employees
• Program service accomplishments — what your organization actually did during the year
• Compensation for officers and key employees (if above certain thresholds)

For CTSOs specifically, the revenue side gets complicated fast. Conference registration income, chapter dues, state grants, sponsorships, and national pass-through funds all need to be correctly classified. If your chart of accounts isn't set up to track revenue by source, building the 990 at year-end becomes a reconstruction project — which is expensive and error-prone.

Another area that trips up CTSO leadership is the program service accomplishments section. This is where you describe what your organization does in a way that demonstrates your charitable or educational purpose. A vague or incomplete answer here raises flags.

Common Schedules CTSOs May Need to Attach

The main 990 form often requires additional schedules depending on your activities. Schedules commonly relevant to CTSOs include:

• Schedule A — Required for 501(c)(3)s. Describes your public charity status and public support test.
• Schedule B — Lists significant contributors (generally those who gave $5,000+ during the year).
• Schedule D — Supplemental financial statements, including endowment funds or conservation easements if applicable.
• Schedule G — Required if you conducted fundraising events or received more than $15,000 in gross income from gaming activities.
• Schedule O — Supplemental information. Used to explain answers elsewhere on the return — this one is almost always required.

The Biggest Mistakes CTSOs Make on the 990

After working with state chapters across the country, here are the mistakes we see most often:

1. Filing late or not at all. This is the most common and most damaging. Set a calendar reminder the day your fiscal year closes and start gathering documents immediately.

2. Misclassifying revenue. Conference registration income is not a donation. Member dues are not contributions. Getting these classifications wrong distorts your public support test and can cause problems with Schedule A.

3. Not reconciling books before filing. The 990 is only as accurate as your books. If your QuickBooks or accounting records haven't been reconciled monthly, you'll spend weeks cleaning up before you can even start the 990.

4. Leaving governance questions blank or inconsistent. The IRS pays attention to whether you have a conflict of interest policy, whether board members reviewed the 990 before filing, and whether you documented it. These aren't just formalities — they matter for compliance.

5. Filing the wrong form version. Covered above, but worth repeating. Always check your gross receipts against the current year's thresholds before you start.

What You Should Have Ready Before Filing

If you work with an accountant for your 990 — which we strongly recommend for any state CTSO — here's what they'll need from you:

• Full-year bank statements for all accounts
• Year-end financial statements (P&L and balance sheet)
• List of all board members with titles and compensation (if any)
• List of key employees earning more than $100,000
• Documentation of any grants received, with purpose and amounts
• Conference revenue and expense detail by event
• Prior year's 990 (for reference and continuity)
• Any significant contracts or agreements entered during the year

Having clean, reconciled books throughout the year makes this process straightforward. When books are messy, the 990 prep becomes a forensic accounting exercise — and that costs money and time.

The Bottom Line

The Form 990 is not a form you want to rush, guess at, or hand off to a general bookkeeper who doesn't understand nonprofit accounting. For state CTSOs specifically, the combination of conference revenue, grant funds, member dues, and complex governance makes this one of the more nuanced nonprofit returns out there.

If your chapter is currently handling this in-house or relying on a general CPA who doesn't specialize in nonprofits, it's worth having a conversation about what a dedicated accounting partner looks like. The cost of getting it wrong far exceeds the cost of getting it right.