When Do You Need a Financial Statement Audit?

Financial statement audits provide independent verification that your books are accurate. They're a key part of compliance for growing companies. Here's when you need one and how to prepare.

Financial statement audit process with auditors reviewing documents
Independent audits verify your financial statements meet GAAP standards
Last Updated: January 2026|10 min read
Audit vs. Review vs. Compilation

Audit

Highest assurance, 95%+ confidence

Examines controls & testing

Review

Moderate assurance, limited procedures

Inquiry & analytical review

Compilation

No assurance, assembles data

Presents financial info

When You Need an Audit

Common Triggers

Series B+ fundraising: Many growth-stage investors require audited financials
Bank debt or credit lines: Lenders often require annual audits
M&A preparation: Acquirers expect audited financials in due diligence
IPO track: Public companies require audited statements (start 2-3 years early)
Large enterprise customers: Some require vendor audits

Planning Ahead

First audits take longer and cost more because auditors need to verify opening balances. Start the process 6-12 months before you need audited statements.

Audit vs. Review vs. Compilation

TypeAssuranceProceduresCost
AuditReasonable (highest)Full testing, confirmation, observation$30K-100K+
ReviewLimitedInquiry and analytical procedures$15K-40K
CompilationNoneAssembles management's data$5K-15K

Which Do You Need?

  • Series B+ investors: Usually require audit
  • Some lenders: May accept review
  • Internal use only: Compilation may suffice
  • When in doubt: Ask the stakeholder what they need

How to Prepare

Audit Readiness Checklist

Monthly close completed within 15 business days
All bank accounts reconciled
Revenue recognition policy documented
Fixed asset schedule maintained
Equity transactions documented (409A, options, etc.)
Related party transactions identified
All material contracts accessible

First Audit Premium

Expect your first audit to cost 50-100% more than subsequent years. Auditors must verify opening balances and understand your business from scratch.

Need Audit Preparation Help?

Eagle Rock CFO helps companies prepare for their first financial audit.

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