How Much Does an Audit Cost? Financial Statement Audit Pricing Explained

How much does an audit cost? A financial statement audit for a small to mid-sized private company typically costs between $5,000 and $75,000, with most mid-market engagements landing in the $15,000 to $50,000 range. Timeline runs from about 3 to 6 months end-to-end for most engagements, with active fieldwork lasting 4 to 12 weeks, depending on complexity and how prepared your team is. Specialized audits, such as employee benefit plan audits, nonprofit Single Audits, and SOC examinations, carry their own pricing structures that differ from a standard financial statement engagement.

What Drives Financial Audit Cost?

No two audits are priced the same because audit fees reflect the time required to obtain sufficient appropriate evidence, as defined by AICPA Generally Accepted Auditing Standards (GAAS). More hours equals more cost, and several factors push hours up or down.

Organization Size and Revenue

Revenue and asset volume are the most direct drivers of audit scope. A company with $5 million in annual revenue typically has fewer transactions, simpler systems, and a smaller balance sheet than one with $50 million in revenue. Auditors size their procedures to the volume of activity, so larger organizations pay more, all else equal.

Complexity of Operations

Multi-entity structures, foreign subsidiaries, complex revenue recognition under ASC 606, lease portfolios under ASC 842, or sophisticated financial instruments all add time to an engagement. If your business has gone through an acquisition, a new accounting system conversion, or a change in capitalization, expect those events to draw additional scrutiny and hours.

Quality of Internal Controls and Records

This is the factor most directly within your control. Auditors assess the design and operation of internal controls as part of every engagement. Strong controls and well-organized supporting documentation allow auditors to rely more heavily on your processes and reduce the volume of substantive testing. Disorganized records, reconciling items left unresolved, and weak controls over financial reporting force auditors to expand their procedures, which drives up both time and cost.

Auditor Tier and Market

Big Four and large national firms charge higher rates than regional or specialized firms, often ranging from $200 to $400 per hour for senior staff. Smaller regional firms may bill $100 to $200 per hour. Hourly rate differences, multiplied across an engagement, create meaningful fee gaps between firm tiers. For most private companies, nonprofits, and benefit plans, a specialized firm with deep experience in your industry delivers the same quality outcome at a lower total cost.

Audit Type

A standard financial statement audit, an employee benefit plan audit, a Single Audit, and a SOC examination each follow different standards, test different populations, and carry different scope requirements. Pricing ranges vary substantially by type, as covered below.

How Much Does an Audit Cost by Audit Type?

Financial Statement Audit (Private Company)

For a privately held company or organization with revenues under $10 million and a simple operating structure, a financial statement audit generally runs $5,000 to $20,000. Mid-market companies with revenues between $10 million and $100 million and moderate complexity typically see fees in the $20,000 to $75,000 range. Larger or highly complex private companies may exceed $100,000, particularly when multiple entities are consolidated or the accounting is technical.

These figures reflect initial year engagements. Repeat-year audits often run somewhat lower because auditors carry forward prior-year knowledge of the business, systems, and controls.

Nonprofit and Single Audit

Nonprofits that receive federal awards face an additional layer of compliance testing if they meet the Single Audit threshold. Under 2 CFR 200.501, a non-federal entity that expends $1,000,000 or more in federal awards during a fiscal year beginning on or after October 1, 2024 must have a Single Audit conducted. This threshold rose from $750,000 as part of the April 2024 revision to the Uniform Guidance.

A Single Audit combines the financial statement audit with a compliance audit of major federal programs. The compliance component adds meaningful hours, and Single Audit fees for a nonprofit at or just over the threshold commonly range from $15,000 to $40,000. Organizations with multiple major programs, high federal expenditures, or findings from prior years will pay more. For a deeper look at nonprofit audit requirements and pricing, see our nonprofit services page.

Employee Benefit Plan Audit

Plans subject to ERISA must file Form 5500 annually, and large plans are required to attach an independent audit. Generally, a plan is a “large plan” when it has 100 or more participants with account balances as of the beginning of the plan year. This counting method, based on participants-with-balances rather than all eligible participants, took effect for plan years beginning on or after January 1, 2023, a change that relieved roughly 20,000 plans from the audit requirement.

The 80-120 rule provides additional flexibility: a plan that fell between 80 and 120 participants may continue to file as a small plan if it filed as a small plan the prior year. Employee benefit plan audits for a straightforward 401(k) typically cost $6,000 to $15,000. Plans with complex investments, multiple investment options, employer stock, or prior-year compliance issues will cost more. Learn more about plan audit requirements and what to expect from the process.

SOC 1 and SOC 2 Examinations

SOC reports are attestation engagements performed under the AICPA’s SSAE 18 standards, not financial statement audits in the traditional sense, but they are frequently grouped with audit services because they require a licensed CPA firm and produce an independent assurance report. SOC 2 engagements assess controls against the AICPA’s 2017 Trust Services Criteria, which cover five categories: security, availability, processing integrity, confidentiality, and privacy. Security is required in every SOC 2 engagement, and the other four categories are included based on the commitments and risks relevant to the service organization.

A SOC 2 Type 1 (point-in-time design assessment) typically runs $15,000 to $40,000 all-in for a first engagement. A SOC 2 Type 2 (operating effectiveness over a review period, typically 6 to 12 months) commonly costs $30,000 to $80,000 for a mid-size SaaS or service organization, with complex or higher-risk scopes pushing higher. Explore SOC reporting options and how to scope your engagement.

How Long Does an Audit Take?

A complete financial statement audit lifecycle has four phases: planning, interim fieldwork, year-end fieldwork, and report issuance. End-to-end, most engagements run 3 to 6 months from engagement letter to final report, though the actual auditor-on-site or active fieldwork period is typically 4 to 12 weeks.

Typical Timeline by Phase

• Planning (weeks 1-4). The auditor learns the business, assesses risk, designs procedures, and issues the engagement letter and preliminary requests. Client preparation during this window directly affects downstream speed.
• Interim fieldwork (weeks 4-8). Auditors test internal controls and perform procedures on activity through an interim cutoff date, often 60 to 90 days before year-end. Completing this phase before year-end compresses the final reporting timeline.
• Year-end fieldwork (weeks 1-4 after year-end). Auditors complete balance sheet testing, confirm receivables and payables, test cutoff, and gather subsequent events. The pace here depends heavily on how quickly management provides requested items.
• Report issuance (weeks 2-4 after fieldwork completion). The auditor drafts findings, management responds to any identified issues, and the final report is reviewed and signed.

A well-prepared client with organized schedules and a responsive finance team can move through a full cycle in 8 to 12 weeks. A client starting the year-end close late, or providing documents in batches over many weeks, can stretch that to 5 or 6 months.

How AI-Native Audits Can Compress the Timeline

Firms using modern audit technology, including automated data extraction, AI-assisted reconciliation testing, and source-linked workpapers, can complete fieldwork phases more efficiently than firms relying on manual processes. At Modus, the AI-native approach means fewer back-and-forth information requests, faster tie-out of supporting documentation, and a tighter overall timeline, without compromising the professional skepticism and evidence standards required by GAAS.

How to Reduce Your Audit Cost

The most effective cost controls are on the client side. Concrete steps that reduce audit fees:

1. Close the books on schedule. Auditors cannot begin year-end fieldwork until financial statements are substantially complete. Every week of delay extends the engagement and may trigger scheduling conflicts.
2. Prepare a comprehensive PBC list early. Work with your auditor to build the “prepared by client” document list before fieldwork begins, then assemble everything at once rather than responding piecemeal.
3. Reconcile all balance sheet accounts before fieldwork. Unreconciled accounts, especially intercompany balances, fixed assets, and prepaid expenses, generate auditor exceptions and additional testing.
4. Document your controls. Written policies and documented approval workflows let auditors assess control design efficiently, rather than relying on interview and observation alone.
5. Minimize prior-year open items. Findings, adjusting journal entries, and control deficiencies from the prior audit that remain unresolved signal risk, which the auditor will respond to with expanded procedures.

Related reading: Audit Materiality and Sampling: Why Auditors Test Selectively

Frequently Asked Questions

How much does a financial statement audit cost for a small business?

A small business with under $5 million in revenue and straightforward operations typically pays $5,000 to $15,000 for a financial statement audit. Costs rise with revenue volume, complexity, number of entities, and the strength of internal controls. Organizations that are disorganized or have weak financial processes often pay meaningfully more.

How much does a nonprofit audit cost?

A nonprofit audit for an organization below the Single Audit threshold generally costs $8,000 to $25,000, depending on size and complexity. If the organization expends $1,000,000 or more in federal awards in a fiscal year beginning on or after October 1, 2024, a Single Audit is required, which adds compliance testing and typically brings total fees to $15,000 to $40,000 or higher.

How long does an audit take from start to finish?

Most financial statement audits run 3 to 6 months from engagement kickoff to final report delivery. Smaller organizations with clean records may complete the full cycle in 8 to 12 weeks. The largest variable is client responsiveness: auditors can only move as fast as documents and answers arrive.

When does a 401(k) plan require an audit?

A 401(k) or other defined contribution plan generally requires an independent audit when it has 100 or more participants with account balances as of the beginning of the plan year. This counting method applies to plan years beginning on or after January 1, 2023. The 80-120 rule permits plans between 80 and 120 participants to continue filing in the same category as the prior year, which can delay the audit requirement for plans approaching the threshold.

What is the difference between an audit, a review, and a compilation?

An audit provides the highest level of assurance: the auditor expresses an opinion on whether financial statements are presented fairly in all material respects, based on procedures designed to detect material misstatement from any cause. A review provides limited assurance through inquiry and analytical procedures, with no opinion. A compilation involves no assurance at all. Banks, investors, bonding companies, and regulators typically require a full audit when they need a credible, independent assessment.

Is audit pricing negotiable?

Audit fees reflect estimated hours at market rates, so the scope of the engagement is the primary lever. Reducing complexity, improving readiness, and narrowing the scope of agreed-upon procedures where appropriate can all affect the final fee. Switching from a Big Four firm to a specialized national firm with deep experience in your industry is often the most significant single step for reducing cost without compromising quality or independence.