November and December can be a useful calm window to tidy up nonprofit records before reporting season begins. A little housekeeping now can make upcoming filings clearer and help your organization catch gaps while there is still time to address them.

Below are five common oversights we see in nonprofit tax filing and compliance work, why each one matters, and a practical next step. Most are fixable with a review of your records, a conversation with your board, or a reminder on your calendar.

1. Confirm the Right Form 990 Series

What it is: Choosing a federal annual filing based on your organization’s size and filing status. For many small 501(c)(3) organizations, the general thresholds are:

• Form 990-N: For organizations with gross receipts normally $50,000 or less.
• Form 990-EZ: For organizations with gross receipts under $200,000 AND total assets under $500,000 at year-end. Both limits must be met.
• Full Form 990: Generally required if gross receipts are $200,000 or more OR total assets are $500,000 or more.

Some organizations follow different rules, so check the IRS guide to which Form 990 series to file for your organization’s situation.

Why it matters: Filing the wrong return can lead to a rejected or incomplete filing. For calendar-year organizations, annual returns are generally due the 15th day of the fifth month after the year ends, normally May 15. For a return covering 2026, May 15, 2027 falls on a Saturday, so the deadline moves to Monday, May 17. The IRS due-date guidance explains the general rule.

A Form 990-N cannot be extended. Other eligible returns may qualify for an automatic extension by filing Form 8868. An extension gives more time to file, not a reason to delay checking what is due. An organization that misses three consecutive required annual filings can automatically lose its exempt status, so confirm acceptance and keep the confirmation with your records.

What to do next: Review your recent receipts and year-end asset totals, verify your expected filing type, and note the due date. If you file Form 990-N, save the IRS acceptance confirmation. For a separate overview of filing preparation and deadlines, see our Nonprofit Tax Filing 101 guide.

2. Review Possible Unrelated Business Income

What it is: Income from a regularly conducted trade or business that is not substantially related to the organization’s exempt purpose. An organization can remain tax-exempt and still have a filing or tax obligation connected to this income.

Why it matters: Form 990-T is generally required when gross income from an unrelated trade or business is $1,000 or more. Potential examples may include selling merchandise unrelated to the mission, advertising income, or renting out facilities. The details of the activity matter: an occasional use of space may be treated differently from ongoing commercial rentals.

What to do next: List revenue activities beyond donations, grants, and core mission programs. If an activity is unusual or its connection to your mission is unclear, review it rather than assuming it is exempt. The IRS overview of unrelated business income tax explains the general rules.

3. Prepare Contractor Records Before January

What it is: Identifying reportable service payments and collecting complete tax information from contractors before forms are due.

Why it matters: For 2026 payments, Form 1099-NEC is generally required when a nonprofit pays an unincorporated contractor $2,000 or more for services. Payments made by credit or debit card or through a third-party payment network are generally reported on Form 1099-K by the payment processor instead, rather than being included on your Form 1099-NEC. Payment type and recipient status can affect the reporting, so review the details.

What to do next: Collect a completed Form W-9 before work begins, then run a vendor payment report in December rather than waiting until January. Compare payments against invoices and your bookkeeping records. Form 1099-NEC has a January 31 filing deadline; because January 31, 2027 is a Sunday, the deadline moves to Monday, February 1. Review the IRS instructions for Forms 1099-MISC and 1099-NEC for current requirements.

4. Strengthen Board and Corporate Records

What it is: Keeping a clear record of board decisions, governance policies, and core organizational documents.

Why it matters: Form 990 asks about governance practices, including whether the organization has a conflict-of-interest policy, how it handles conflicts, whether board members receive the return before filing, and how it reviews compensation for key employees. Accurate records help the board explain its decisions and support consistent reporting.

What to do next: Before year-end, check that your organization has:

• Current board minutes documenting key decisions.
• A conflict-of-interest policy and annual disclosures from board members and key staff.
• A documented review of compensation for key employees.
• A documented board review or approval of the Form 990 before filing.
• Current articles of incorporation, bylaws, and IRS determination letter.

A corporate records binder keeps these documents together and easier to locate. We also provide business formation and compliance support, including corporate binder organization, to help nonprofits keep their records current.

5. Check State and Local Registrations

What it is: Renewals and updates required outside the federal tax system. Depending on where you operate or fundraise, these may include charitable solicitation registration, state annual corporate reports, registered agent or officer updates, and sales tax exemption certificates.

Why it matters: Federal tax-exempt status does not automatically complete state registrations. Many states have their own rules for charities that solicit donations, and fundraising in a state without a required registration can create exposure. Deadlines and requirements vary by state and may depend on how and where you solicit.

What to do next: Check the rules in every state where you fundraise or operate. The National Council of Nonprofits’ state filing requirements page is a useful starting point. Then create one compliance calendar listing federal, state, and local renewal dates, with a person responsible for each item.

Year-End Financial Housekeeping

Well-organized books make nonprofit tax filing and board review more manageable. Before closing the year, check that restricted and unrestricted funds are tracked separately. A restricted gift is a donation the donor has limited to a particular purpose or time period; reconcile those gifts against grant agreements and spending records.

Document in-kind donations, goods or services provided instead of cash, and retain the supporting information your organization uses to record them. Finally, reconcile bank and payment accounts and compare your bookkeeping totals with the figures expected to appear on the annual return. If records are spread across files and inboxes, a shared, access-controlled nonprofit command center can keep key documents, responsibilities, and deadlines easier to track.

Your Year-End Nonprofit Compliance Checklist

Before December 31, confirm that you have:

• Reviewed the likely Form 990 series and saved prior filing confirmations.
• Checked revenue activities for possible unrelated business income.
• Collected contractor W-9s and run a year-end payment report.
• Updated board minutes, conflict disclosures, and governance documents.
• Documented board review of the annual return and compensation decisions.
• Checked state fundraising, corporate, and sales tax registrations.
• Reconciled restricted gifts, in-kind donations, and year-end financial records.
• Added all federal, state, and local renewals to one compliance calendar.

A steady year-end review can help you enter reporting season with clearer records and fewer open questions. If you would like help with nonprofit setup, tax filing, corporate records, or ongoing compliance support, contact Yolanda Financial Services to request a free consultation. We’ll help you understand your next steps and organize the work at a manageable pace.

This article provides general information, not legal, tax, or accounting advice. Filing requirements and deadlines can vary based on your organization’s activities, tax year, and state or local rules. Review current official guidance or speak with a qualified professional about your organization’s specific situation.