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Organizational Development

Nonprofit Audit Requirements: When and How to Get an Audit

Drew Giddings
Drew GiddingsFounder & Principal Consultant
April 11, 2026
14 min read

A complete guide to nonprofit audit requirements — federal Single Audit rules, state thresholds, funder mandates, audit costs, and alternatives like reviews and compilations.

Key Takeaways

Federal Single Audit is required when a nonprofit spends $750,000+ in federal awards in a single fiscal year
State audit thresholds vary from $300K to $2M+ — verify with your state's charitable registration office
Review and compilation engagements are less expensive alternatives when a full audit isn't required
Audit costs range from $10,000 (small organizations) to $250,000+ (large organizations)
Strong internal controls and year-round bookkeeping reduce audit costs and findings

Do Nonprofits Need an Audit?

Not all nonprofits need an audit. Whether your organization requires one depends on federal law, state law, funder requirements, and your own governance decisions. This guide explains exactly when audits are required and how to manage the process efficiently.

When Audits Are Required

Federal Single Audit (Uniform Guidance)

Nonprofits that spend $750,000 or more in federal awards in a single fiscal year must undergo a Single Audit under 2 CFR Part 200 (Uniform Guidance). This is the most common federal audit trigger.

  • Threshold: $750,000 in federal expenditures (not revenue — actual spending of federal dollars)
  • Scope: Examines both financial statements and compliance with federal program requirements
  • Deadline: Due within 9 months after the end of the fiscal year audited
  • Cost: Significantly more expensive than a financial statement audit due to the compliance component
  • Filing: Submitted to the Federal Audit Clearinghouse
  • State Audit Requirements

    Each state sets its own audit requirements for nonprofits soliciting contributions. Thresholds vary widely:

    StateAudit Required At
    California$2 million+ gross revenue (registered charities)
    Illinois$300,000+ (financial statement required; audit above $300K)
    Massachusetts$500,000+ (financial statement required; audit above $500K)
    New York$1 million+ (audit required above this threshold)
    Pennsylvania$750,000+ (audit required)
    Michigan$550,000+ (audit required)

    Always verify current thresholds with your state's charitable registration office — they change over time.

    Grant and Contract Requirements

    Many foundations and government contracts require audited financial statements as a condition of funding. Common triggers:

    • Federal grants (often even below the $750K Single Audit threshold)
    • State contracts for service delivery
    • Some private foundation grants (especially larger grants)
    • United Way funding (varies by local United Way)
    • Major corporate partnerships

    Internal Decisions to Get an Audit

    Even when not required, organizations may choose to get an audit for:

  • Donor confidence — Audited financials increase credibility with major donors
  • Board governance — Independent verification of financial controls
  • Grant readiness — Preparing for grants that will require audits later
  • Transition periods — New executive director, major growth, or restructuring
  • Fraud concerns — If there are concerns about financial management
  • Audit vs. Review vs. Compilation

    There are three levels of financial statement attestation, from most to least rigorous:

    ServiceWhat It ProvidesCostWhen Appropriate
    AuditPositive assurance — auditor's opinion that statements are materially accurate$15,000-$75,000+Required by law/funders; organizations over $1M
    ReviewLimited assurance — auditor is "not aware" of material issues$5,000-$20,000Mid-sized organizations; some grant requirements
    CompilationNo assurance — CPA prepares statements from your records$2,000-$7,000Small organizations; internal use

    If no audit is required, a review or compilation may be sufficient and significantly less expensive.

    How to Prepare for a Nonprofit Audit

    6-12 Months Before

  • Clean up your books monthly. Reconcile bank accounts, categorize all transactions, and resolve any coding errors.
  • Document internal controls. Write down your processes for cash handling, approvals, and segregation of duties.
  • Maintain grant files. Each grant should have a folder with the application, award letter, reports submitted, and supporting documentation.
  • 3 Months Before

  • Select your auditor. Get quotes from 2-3 firms. Choose one with nonprofit experience.
  • Schedule the audit. Audit season (January-April) is busy — book early.
  • Prepare the audit request list. Your auditor will provide a list of documents needed. Start gathering them.
  • 1 Month Before

  • Finalize year-end accounting. All transactions should be recorded, all bank accounts reconciled, all grants coded correctly.
  • Prepare schedules. Fixed asset schedule, grant revenue schedule, depreciation schedule, and others.
  • Compile board materials. Board minutes, conflict of interest disclosures, executive compensation decisions.
  • During the Audit

  • Assign a staff liaison to coordinate with the auditor
  • Respond promptly to auditor questions
  • Document adjustments the auditor proposes
  • Discuss findings before the final report is issued
  • Common Audit Findings

    Understanding common findings helps you avoid them:

  • Inadequate segregation of duties — Same person handles cash receipts and deposits, or approves and records transactions
  • Missing documentation — Invoices, contracts, or approvals cannot be located
  • Improper revenue recognition — Pledges, grants, or restricted funds recorded incorrectly
  • Functional expense allocation errors — Expenses not properly allocated between program, management, and fundraising
  • Internal control deficiencies — Weak approval processes, missing reconciliations, or lack of oversight
  • Federal grant compliance issues — Time and effort reporting, procurement procedures, or cost allowability
  • How Much Do Nonprofit Audits Cost?

    Audit costs vary based on organization size, complexity, and location:

    Organization SizeTypical Audit Cost
    Under $500K revenue$10,000-$20,000
    $500K-$2M revenue$15,000-$35,000
    $2M-$10M revenue$25,000-$60,000
    $10M-$50M revenue$40,000-$100,000
    Over $50M revenue$75,000-$250,000+

    Single Audits (federal compliance) add 25-50% to the base audit cost.

    Ways to Reduce Audit Costs

    • Strong accounting and internal controls reduce auditor time
    • Well-organized documentation (vs. shoeboxes of receipts)
    • Timely responses to auditor requests
    • Consistent staff (avoid staff turnover during audit season)
    • Single-year engagements with competitive bids every 3-5 years

    Frequently Asked Questions

    Who can perform a nonprofit audit?

    Only Certified Public Accountants (CPAs) licensed in your state can issue audited financial statements. The CPA firm must also be independent — not involved in preparing your accounting records or providing bookkeeping services.

    How long does an audit take?

    From start to final report: typically 4-8 weeks for small to mid-sized organizations. The on-site fieldwork portion is usually 1-3 weeks.

    Do we need an audit if we have 501(c)(3) status?

    Not automatically. 501(c)(3) status itself does not trigger an audit requirement. Audits are required only when triggered by federal funding thresholds, state charitable registration rules, grant/contract requirements, or internal governance decisions.

    What's the difference between an audit and Form 990?

    Form 990 is an informational tax return filed with the IRS. An audit is an independent examination of your financial statements by a CPA. Some states require audited financials as an attachment to state charitable filings, but the IRS does not require Form 990 to be audited.

    Building Audit-Ready Financial Systems

    The best way to manage audit costs and avoid findings is to maintain strong accounting practices year-round. Giddings Consulting Group helps nonprofits strengthen financial management, internal controls, and audit readiness.

    Contact us to discuss your organization's financial management needs.

    nonprofit auditsingle audit501c3 audit requirementsnonprofit financial managementuniform guidance
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    Drew Giddings

    About the Author

    Drew Giddings

    Founder & Principal Consultant

    Drew Giddings brings more than two decades of experience working with mission-driven organizations to strengthen their capacity for equity and community impact. His work focuses on helping nonprofits build sustainable strategies that center community voice and create lasting change.

    Ready to Transform Your Organization?

    Let's discuss how equity-centered strategic planning can strengthen your mission and community impact.

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