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Tax & Accounting for Nonprofits

Nonprofits file 990s. We prepare them, keep the books, and help with the charity solicitation registration most states now require. Tax-exempt does not mean paperwork-exempt: the 990 is public, donors read it, and the filings around it (state registration, sales tax exemption, payroll) each have their own deadlines.

Katie Gorles
Written by
Katie Gorles
Updated July 6, 2026

Which 990 you file

990-N (postcard) for gross receipts under $50,000. 990-EZ for receipts between $50,000 and $200,000 with assets under $500,000. Full 990 for everything else. Private foundations file 990-PF. The full 990 is as much a governance document as a tax form: program accomplishments, board policies, and compensation practices all show on a form anyone can pull up.

State charity registration

Most states require nonprofits soliciting donations from residents to register with the state's charity bureau. Florida, California, New York, and Illinois have active enforcement. We track and file. In Florida the registration runs through the Department of Agriculture and Consumer Services and renews annually, and online fundraising can quietly create obligations in other states where your donors live.

Florida sales tax exemption

Exempt status from the IRS does not automatically exempt purchases from Florida sales tax. The organization applies to the Department of Revenue for a consumer's certificate of exemption and presents it to vendors. Sales the nonprofit makes (event tickets, merchandise, concessions) can still be taxable sales, which catches gala and fundraiser planners off guard.

Unrelated business income

Revenue from activities not substantially related to the exempt purpose can be taxable as unrelated business income and reported on Form 990-T. Common triggers deserve a look before they grow:

  • Advertising sales in newsletters or on the website, as opposed to acknowledgment-style sponsorships
  • Regular merchandise sales unrelated to the mission
  • Rental income from debt-financed property
  • Too much unrelated activity can eventually threaten the exemption itself
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Donations, acknowledgments, and events

Donors need a written acknowledgment for gifts of $250 or more, and quid-pro-quo contributions (a gala ticket with dinner included) require the organization to state the deductible portion. Non-cash gifts, auction items, and vehicle donations each have their own substantiation forms. Getting the letters right protects your donors' deductions and your organization's credibility.

Payroll and board compensation

Key employees' compensation, board members' expense reimbursements, and related-party transactions all require Schedule J or L disclosures on the 990. Nonprofits run real payroll with real withholding, and misclassifying program staff as contractors creates the same exposure it does in a for-profit, with the added cost of a public form that shows it.

Common questions

What happens if we miss filing a 990 three years in a row?
Automatic revocation of 501(c)(3) status. Reinstatement requires reapplication and often back-tax liability for years out of compliance.
Are we automatically exempt from Florida sales tax?
No. The Florida exemption certificate is a separate application to the Department of Revenue. Until it's issued, vendors are right to charge you tax.
Our nonprofit sells t-shirts and event tickets. Is that a problem?
Not necessarily, but it needs a look. Mission-related sales are usually fine; regular commercial activity can be unrelated business income, and Florida sales tax can apply to the sales themselves.
Do we have to register before fundraising in Florida?
Yes, with limited exceptions. Florida requires charities soliciting contributions to register with FDACS and renew each year, and the state does enforce it.

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