Most PTO leaders think taxes are only for big corporations.
Wrong.
Even if you’re a small, all-volunteer group raising money for the school, the IRS — and sometimes your state — still expects you to follow the rules.
Miss them, and you’re in for a nasty surprise.
Most PTO tax problems don’t start with bad intentions.
They start with busy volunteers and a missed deadline.
Here are the risks to watch.
The Hidden Risks
1. Losing Your Tax-Exempt Status
If your PTO is a 501(c)(3) and you fail to file your Form 990 (or 990-EZ or 990-N postcard) for three years in a row, the IRS automatically revokes your tax-exempt status.
Getting it back is a costly, paperwork-heavy headache.
Three years sounds like a long time.
It isn’t, when the treasurer changes every year and the paperwork lives in someone’s garage.
Check your filing history now, before a grant reviewer does.
2. Unreported Income from Fundraisers
Just because you sold cupcakes for a cause doesn’t mean you can skip the recordkeeping.
The IRS still wants to know your income and expenses — yes, even for small events.
Bake sales, raffles, book fairs, spirit nights. They all count.
Small events add up to a real total over a year.
A simple log of money in and money out is usually enough to start.
Fill it in the same day, while you still remember.
3. Paying the Wrong People the Wrong Way
If you hire a DJ, a photographer, or even an assembly presenter, you may need to issue them a 1099-NEC form if they earn $600 or more.
Skip this step, and you could face penalties.
Ask every vendor for a W-9 before you pay them.
It takes two minutes.
Chasing one down in January takes much longer.
4. State-Level Surprises
Your state may require separate filings — annual reports, sales tax returns, or fundraising licenses. PTOs often miss these because “we thought we were too small.”
Rules vary by state, so never assume another PTO’s list is yours.
Ask your state’s charity or revenue office what applies to you.
5. Penalties and Interest
Late filings don’t just disappear. They grow. What starts as a $50 penalty can balloon into hundreds if ignored.
Interest keeps adding while you wait.
Every month of delay makes the bill bigger and the fix harder.
Filing late is still better than not filing at all.
True Story: A PTO in the Midwest forgot to file its IRS Form 990 for three years. They didn’t notice until a grant application was rejected because their tax-exempt status was revoked. It cost them over $700 in IRS fees and they lost a year of grant eligibility.
Nobody on that team was careless.
They were busy, and the deadline slipped by unnoticed.
That is how it usually happens.
How to Avoid Tax Trouble
- Mark Your Calendar — Filing deadlines are non-negotiable.
- Keep Detailed Records — Every fundraiser, every expense, every payment.
- Get Professional Help — Even an hour with an accountant can save you thousands.
- Don’t Assume — Check both IRS and state requirements for your type of PTO.
Start with one step this week.
Put the next filing date on the calendar and share it with the whole board.
Then name a backup person, so nothing depends on a single volunteer.
Prevention costs a few hours.
Penalties cost money, time and trust.
Bottom line: PTO tax trouble is preventable.
The only thing worse than paying penalties is explaining to parents why their hard-earned fundraiser dollars went to the IRS instead of the school.