Nonprofits face regulatory scrutiny that for-profits rarely encounter, making audit and assurance work more complex and costly if done wrong. Unlike commercial entities, you'll navigate donor restrictions, compliance with grant requirements, and often multiple funding sources—each with its own reporting demands. Getting the right auditor familiar with nonprofit accounting standards (GAAP and ASC 958) isn't just about ticking boxes; it directly affects your credibility with funders and your ability to operate.
Why Nonprofits Need Specialized Audit & Assurance
Standard commercial audits won't cut it for most nonprofits. Your auditor needs to understand:
- Net asset classification: Unrestricted, temporarily restricted, and permanently restricted categories (or, under newer standards, with/without donor restrictions)
- Grant compliance: Many grants require specific audit procedures and single audits under Uniform Guidance if you receive $750,000+ in federal funding annually
- Form 990 coordination: Your audit findings should align with your tax filing; mismatches raise red flags with the IRS
- Revenue recognition: Donation timing, pledge accounting, and in-kind contribution valuation differ significantly from for-profit revenue
Skipping a proper audit or hiring an auditor unfamiliar with nonprofits often results in costly corrections, donor confidence issues, and potential compliance violations.
Single Audits vs. Regular Audits: Know the Difference
If your nonprofit receives $750,000 or more in federal awards in a fiscal year, you're subject to a Single Audit under the Uniform Guidance (2 CFR 200). This isn't optional.
A Single Audit includes:
- A financial statement audit (standard)
- Testing of federal award expenditures and compliance with specific requirements
- A report on internal controls over federal awards
- Typically costs $8,000–$25,000+, depending on program complexity and grant volume
If you're under that threshold, a standard financial audit runs $3,000–$10,000 for smaller nonprofits, though costs scale with organizational size and transaction volume. Some nonprofits below the threshold opt for a review (less rigorous, ~$1,500–$5,000) or compilation (lowest level of assurance, ~$800–$2,500) if their bylaws or funders permit.
What to Look for When Hiring an Auditor
Don't just grab a CPA from the yellow pages. Vet candidates on:
- Nonprofit accounting experience: Ask how many nonprofit audits they've completed in the past three years and their specific experience with your subsector (healthcare, education, arts, etc.)
- Single Audit competency: If applicable, confirm they've managed Single Audits and understand Uniform Guidance requirements
- Technology comfort: Your auditor should integrate with modern accounting software (QuickBooks Online, Neon CRM) rather than demand data exports and manual reconciliation
- Sector-specific knowledge: A healthcare audit firm should know HIPAA implications; an education auditor should understand Title IV compliance
- Fee transparency: Request a detailed proposal breaking down hours, rates, and deliverables upfront. Red flags include vague "we'll let you know" pricing
- Timeline: Standard audits typically take 6–10 weeks from fieldwork start to final report. Plan accordingly around your fiscal year-end
Preparing for a Smoother Audit
Your auditor's efficiency—and your final bill—depends partly on preparation:
- Reconcile bank accounts and balance sheet accounts monthly, not quarterly
- Maintain clear documentation of restricted funds and how they're being deployed
- Keep contemporaneous records of in-kind donations with fair-value assessments
- Schedule a pre-audit planning call at least 30 days before fieldwork begins
- Designate a single internal contact who can respond to auditor questions quickly
Poor record-keeping can add weeks and thousands of dollars to audit costs.
Red Flags in Audit Findings
When your auditor issues their report, pay close attention to:
- Material weaknesses in internal controls: These signal serious gaps and must be disclosed on Form 990
- Questioned costs: Federal funds the auditor deemed misspent; you'll likely have to repay them
- Compliance violations: Audit adjustments for grant restrictions violated, revenue recognized incorrectly, or payroll tax issues
- Management letter comments: Often low-risk, but repeated findings year-over-year suggest systemic problems
Use these findings to strengthen your processes, not to find a more lenient auditor.
Finding the Right Partner
Comparing auditors across pricing, experience, and methodology is critical. Platforms like Mercoly let you find and compare trusted audit and assurance providers in one place, streamlining your selection process without sacrificing quality.
Frequently Asked Questions
Q: Do we need an audit if we're a small nonprofit? A: Only if required by law, grant agreement, or bylaws—but many small nonprofits benefit from a review or compilation for credibility and internal controls assessment.
Q: How often should we audit? A: Annually if you receive federal funding, receive significant donor contributions, or have board/funder requirements; smaller nonprofits with stable, restricted funding may audit every two years if permitted.
Q: What's the difference between an auditor and a bookkeeper? A: A bookkeeper records transactions; an auditor independently verifies those records and provides assurance that your financial statements are accurate and compliant.
Start your search for a nonprofit-focused auditor today—timing your vendor selection before fiscal year-end prevents last-minute scrambling and audit delays.