Nonprofit Tax Basics: What You Need to Know

"Tax-exempt" is the most misleading two-word phrase in the nonprofit world. Exempt organizations still file annual returns, still pay payroll taxes, can absolutely owe income tax on the wrong kind of revenue, and can lose their status entirely by missing three filings in a row — something that happens to thousands of small organizations every year, usually by accident. Here's what running a compliant nonprofit actually involves in 2026.

What does 501(c)(3) status actually get you — and what doesn't it?

Recognition under Section 501(c)(3) delivers three big things:

• Exemption from federal income tax on income related to your charitable mission
• Tax-deductible donations — the fundraising superpower, since donors can write off gifts
• Eligibility for foundation grants, many of which require determination letters, plus reduced postal rates and (in many states) sales and property tax exemptions

What it does not do: exempt you from payroll taxes on employees (Social Security and Medicare apply just like any employer), from unrelated business income tax (below), from state-level registration requirements, or from the annual information return that keeps the whole arrangement alive. Think of 501(c)(3) as a license with maintenance requirements, not a permanent blessing.

How do we apply — Form 1023 or 1023-EZ?

After incorporating under state law and getting an EIN, you ask the IRS for recognition on one of two forms:

• Form 1023-EZ — a streamlined online form with a $275 user fee. Available if you project annual gross receipts of $50,000 or less for each of the next three years (and had no more than that in the past three), hold total assets of $250,000 or less, and aren't in an excluded category (churches, schools, hospitals, and certain others must use the long form). Processing is typically measured in weeks.
• Form 1023 (full) — the long-form application with a $600 user fee, required for everyone else. It's a substantial document — narrative of activities, multi-year budgets, governance documents — and processing often takes months.

Approval is generally retroactive to your formation date if you file within 27 months of incorporating, meaning donations received while the application is pending become deductible once the determination letter arrives. Building the budget projections honestly matters: outgrowing your 1023-EZ projections isn't fatal, but misrepresenting them can be.

Which Form 990 do we file — and what happens if we don't?

Every 501(c)(3) except churches (and a few narrow categories) files something annually, sized to the organization:

The deadline is the 15th day of the 5th month after your year ends — May 15 for calendar-year organizations — with a six-month extension available (Form 8868; the 990-N has no extension but also takes five minutes).

The consequence that catches small organizations: miss three consecutive years and your exemption is automatically revoked by operation of law. No hearing, no discretion — your name goes on a public revocation list, donations stop being deductible, and you're potentially a taxable corporation until reinstated. Reinstatement is very doable (there's a streamlined path for small organizations that act within 15 months), but it costs a new application fee and months of limbo. If you've just discovered a missed filing or a revocation letter in an old founder's inbox — this is common, and it's recoverable. Problems come here to get solved. The reinstatement playbook is well worn.

When does a tax-exempt nonprofit still owe tax?

Three main ways:

1. Unrelated business income tax (UBIT). Income from a trade or business, regularly carried on, that isn't substantially related to your mission gets taxed at the 21% corporate rate, reported on Form 990-T once gross UBI hits $1,000. A worked example (2026): a literacy nonprofit runs a public coffee shop staffed by paid employees, netting about $30,000. That's likely unrelated business income — roughly $6,300 of federal tax — even though every dollar of profit funds literacy programs. How you earn money matters, not just why.

The classic exceptions that keep common activities safe: activities run substantially by volunteers, sales of donated merchandise (thrift stores), activities for members'/employees' convenience, and most passive income — dividends, interest, royalties, and most rents from unmortgaged real estate. Multiple unrelated activities must each be computed separately (losses in one can't shelter profits in another), and meaningful UBI (as a rule of thumb, more than roughly 15–20% of activity) can start threatening exempt status itself — at that point a taxable subsidiary is the standard fix.

2. Payroll taxes. Always. Nonprofits withhold and pay FICA like any employer, and misclassifying staff as contractors is one of the most common — and most expensive — small-nonprofit mistakes. (Note: for payments made in 2026, the 1099-NEC threshold for true contractors rose to $2,000.)

3. Executive compensation excise tax. Section 4960 imposes a 21% excise tax on compensation over $1 million — and beginning in 2026, the covered-employee net widened dramatically beyond the old "top five" to reach essentially any employee crossing the line. Few small nonprofits will care; growing institutions with highly paid physicians, coaches, or investment staff should.

What rules protect our exempt status?

Four bright lines, in rough order of how often they hurt organizations:

• No private inurement or excess benefit. Insiders can be paid reasonably — they cannot extract excess value. Overmarket salaries, sweetheart leases, and undocumented "loans" to founders trigger intermediate-sanctions excise taxes on the individuals and endanger the exemption. Comparability data and board minutes are your armor.
• Zero political campaign activity. Endorsing or opposing candidates is an absolute ban for 501(c)(3)s — not a limit, a ban. Nonpartisan voter education is permitted; the line deserves respect.
• Limited lobbying. Influencing legislation must stay insubstantial — and most active organizations are better off making the 501(h) election, which replaces the vague "insubstantial" standard with generous, objective dollar limits.
• Public support. Public charities generally need at least one-third public support over a rolling five-year window; drift toward one or two mega-donors and you risk sliding into private-foundation status with its stricter rules and excise taxes.

What changed for our donors in 2026?

A lot — and it reshapes fundraising conversations this year:

• Non-itemizers can deduct again: starting in 2026, taxpayers taking the standard deduction can deduct up to $1,000 (single) / $2,000 (married filing jointly) in cash gifts to qualifying charities. That's roughly nine in ten households regaining a tax incentive to give — worth mentioning in every appeal letter (donor-advised funds and supporting organizations don't qualify for this one).
• Itemizers face a new floor: only giving above 0.5% of AGI is deductible from 2026 on, and top-bracket donors' deduction value is capped at 35%. Large donors may increasingly "bunch" gifts into alternate years — expect lumpier major-gift patterns.
• Corporate donors got a floor too (1% of taxable income), which may push some corporate support toward sponsorship structures.

Keep your gift-acknowledgment discipline tight: written receipts for any gift of $250 or more (stating whether goods or services were provided) and quid-pro-quo disclosures when donors receive something back for payments over $75. The donor's deduction legally depends on your paperwork. Full details on this year's law changes live in our 2026 tax changes hub.

FAQ

Does federal 501(c)(3) status automatically exempt us from state taxes?

No — most states require separate registration for income, sales, or property tax exemption, and roughly 40 states require charitable solicitation registration before you fundraise there (including online in some cases). Budget for this in multi-state fundraising.

Can founders and board members be paid?

Employees and officers can receive reasonable compensation — documented with comparables and approved by disinterested board members. Voting board members are typically unpaid in small organizations, and paying them for board service invites scrutiny; paying them fairly for distinct staff roles is legitimate.

We had almost no activity this year. Do we still file?

Yes. The 990-N takes minutes even in a zero-revenue year — and skipping it starts the three-strikes clock toward automatic revocation.

What has to be in a donation receipt?

Your organization's name, gift date and amount (or description of property), and a statement that no goods or services were provided — or a description and good-faith value of anything that was. Get them out by January 31 for the prior year's gifts as a matter of practice.

Can our nonprofit take a public position on a ballot measure?

Ballot measures count as lobbying (legislation), not campaign intervention — so limited engagement is allowed within your lobbying ceiling, ideally under a 501(h) election. Candidates remain strictly off-limits. When the lines feel blurry, a one-hour consult is far cheaper than a status fight; see pricing for how we support nonprofits year-round.

Reviewed by the WAYG tax team · Updated July 2026