A nonprofit financial audit isn't just a checkbox compliance task—it's a thorough examination of your organization's financial records, systems, and controls. Understanding what auditors actually review helps you prepare efficiently, avoid surprises, and demonstrate accountability to donors and regulators. Here's what a standard nonprofit audit includes and what you should expect.
The Audit Scope and Objectives
A nonprofit audit tests whether your financial statements present a fair and accurate picture of your organization's financial position. Auditors follow standards set by the American Institute of Certified Public Accountants (AICPA), which means they follow consistent procedures regardless of which firm you hire. The scope typically covers all material accounts—revenue, expenses, assets, and liabilities—though the depth varies based on your organization's size, complexity, and risk profile.
Most nonprofits undergo a "full scope" audit if they exceed certain thresholds (often $500,000 to $750,000 in annual revenue, depending on state requirements and funder mandates). Smaller organizations might qualify for a limited scope or agreed-upon procedures engagement, which costs less but provides a lower level of assurance.
Financial Statement Review
Auditors examine your balance sheet, statement of activities, statement of cash flows, and statement of functional expenses. They verify that income and expense classifications are correct—particularly important for nonprofits because Form 990 reporting depends on accurate expense categorization into program, management, and fundraising buckets.
Auditors test a sample of transactions throughout your fiscal year to confirm they're recorded accurately and supported by documentation. For example, they'll pull invoices, donation receipts, or grant agreements to verify that revenue or expense entries match your records. This process typically uncovers missing documentation, coding errors, or control gaps that need correction before the audit concludes.
Internal Control Assessment
One of the biggest value-adds in an audit is the evaluation of your financial controls. Auditors assess whether you have adequate safeguards to prevent or detect errors and fraud. They review your processes for:
- Cash receipts and bank reconciliations
- Expense authorization and payment workflows
- Payroll processing and tax withholding
- Loan and credit card management
- Financial reporting and account reconciliation procedures
- Donation tracking and restricted fund monitoring
Weak controls don't necessarily mean your audit fails, but auditors will document findings and recommend improvements. Many organizations use these audit recommendations to strengthen their operations significantly.
Compliance Testing
Nonprofits face federal, state, and local compliance requirements. Auditors verify that you're following rules around:
- Tax-exempt status maintenance and Form 990 filing accuracy
- Grant and contract requirements (especially for government or foundation awards)
- Donor restrictions on funds
- State charitable registration and reporting
- Payroll tax deposits and filings
- Unrelated business income tax (UBIT) obligations, if applicable
If you received federal grants above certain thresholds (typically $750,000), your audit must include a Single Audit that tests compliance with federal award requirements under OMB Uniform Guidance.
Timeline and Cost Considerations
A typical nonprofit audit takes 4–8 weeks from fieldwork start to final report, depending on your organization's size and record-keeping quality. Costs generally range from $3,000 to $15,000 for smaller organizations, $15,000 to $40,000 for mid-sized nonprofits, and $40,000+ for larger or more complex entities. Expect to pay extra for Single Audit components or specialized areas like foreign operations or complex grant structures.
Plan your audit timing strategically—many nonprofits schedule fieldwork 2–3 months after their fiscal year ends to allow time for year-end closing and account reconciliation.
Preparing for Your Audit
Before auditors arrive, ensure your general ledger is reconciled, all accounts are balanced, and reconciliations (bank, credit card, investment, loan accounts) are current and documented. Provide a draft trial balance and a list of any significant transactions or accounting changes from the year. Organize supporting documentation logically so auditors can access it efficiently—this reduces audit time and your costs.
When comparing audit providers, don't select based solely on price. Check credentials (CPA firms should be licensed in your state), nonprofit experience, and whether they understand your specific programs or funding sources. Mercoly helps you compare and find trusted Audit & Form 990 Services providers in one place, making it easier to evaluate options that fit your organization's needs and budget.
Frequently Asked Questions
Q: Do I need an audit every year? State laws and funder requirements vary; many nonprofits under $500,000 in revenue can file Form 990-N (e-postcard) without an audit, while others require annual audits regardless of size. Check your state's nonprofit statutes and your major funders' requirements.
Q: What's the difference between an audit and a review or compilation? An audit provides the highest assurance that financial statements are accurate and includes control testing; a review offers moderate assurance without control testing; a compilation simply presents your data without assurance. Audits are typically required by law or funders; reviews and compilations are less expensive alternatives when audits aren't mandated.
Q: Will my audit address Form 990 accuracy? Most audits don't specifically verify Form 990 accuracy unless your organization contracts for that service separately, though auditors will flag obvious inconsistencies between audited statements and your Form 990 filing.
Ready to find the right audit partner for your nonprofit? Compare vetted providers today.