When you need an audit or assurance engagement, the speed of the response can affect your entire compliance timeline. Understanding what reasonable turnaround looks like—and where delays typically occur—helps you plan better and avoid last-minute scrambles during filing season.
Initial Response: The First 24–48 Hours
Most reputable audit and assurance firms respond to initial inquiries within one business day. If you're contacting them via their website form, email, or phone, expect a preliminary acknowledgment and a request for basic information about your company size, industry, and specific audit needs.
Some firms are faster. Big Four and mid-tier firms usually staff intake coordinators who log requests immediately. Smaller boutique firms may take slightly longer if they're managing inquiries personally. The key signal is whether they confirm receipt and outline next steps within 48 hours; if not, that's a yellow flag about their capacity.
Scoping Call: 2–5 Business Days
Once they've contacted you, the firm schedules a scoping call—this is where they ask detailed questions about your financials, internal controls, and audit objectives. This call typically happens within 2–5 business days of first contact, depending on their schedule and yours.
Expect this call to take 30–60 minutes. Come prepared with:
- Recent financial statements (draft or final)
- Number of employees and payroll processing details
- Details on any prior audits or reviews
- Specific compliance requirements (lender mandates, regulatory bodies, grant requirements)
- Key dates when the audit must be complete
This conversation directly affects the timeline and scope—vague answers here can delay everything downstream.
Proposal and Fee Quote: 5–10 Business Days
After the scoping call, the firm prepares a formal proposal. This includes the scope of work, timeline, fee estimate, and resource allocation. Typical turnaround is 5–10 business days, though some firms have template-based proposals they can turn around faster.
Review the proposal closely. It should specify:
- Exact start and completion dates
- Key milestones (fieldwork start, interim fieldwork, final review)
- Who will be assigned to your engagement (partner name, senior manager, team size)
- Any dependencies on you (e.g., when financial records must be ready, bank confirmations needed)
- Fee structure (fixed, hourly, or hybrid)
If it's vague on timeline, ask directly: "When will fieldwork begin, and when will we have a final report?" A good firm answers in specific dates, not ranges.
Fieldwork and Reporting: 2–6 Weeks
This is where the bulk of audit work happens. A typical timeline depends on your complexity:
- Small businesses (under $5M revenue, simple transactions): 2–3 weeks fieldwork
- Mid-market companies ($5M–$50M revenue, multiple locations or systems): 3–4 weeks
- Larger or complex entities ($50M+, multiple entities, regulatory scrutiny): 4–6 weeks or more
The final report—your audited financial statements and audit opinion—usually lands 1–2 weeks after fieldwork concludes. If they promise a "quick turnaround," ask if that means the draft report or the final audited version with management letters.
Variables That Slow Response Times
Some delays are in your control; others aren't:
- Incomplete financial records: This is the #1 reason audits slip. If your general ledger has gaps or reconciliations are missing, the firm's team waits.
- Late bank confirmations or third-party responses: External confirmations can take weeks; plan ahead.
- Year-end adjustments and cutoff issues: Firms often identify items requiring your follow-up, extending the timeline by days or weeks.
- Firm capacity during busy season: Tax season (January–April) and fiscal year-end pushes (December–March) can add 10–20% to typical timelines.
- Regulatory or compliance complexities: If your industry requires special expertise (healthcare, nonprofits, financial institutions), response times may increase slightly.
How to Ensure Timely Responses
Ask the firm upfront how they handle SLAs (service-level agreements). Some charge a small premium for expedited timelines. Request weekly status updates in writing. Assign a single point of contact on your side who responds to information requests within 24 hours. The faster you provide supporting documents and answer their questions, the faster they work.
Mercoly helps you compare and contact multiple audit firms simultaneously, so you can see real response times and fee structures side-by-side before committing.
Frequently Asked Questions
Q: Can an audit be completed in one week? Not typically—most audits require at least 2–3 weeks of fieldwork plus final review, unless you have extremely simple finances and the firm prioritizes you heavily (which costs extra).
Q: What happens if the auditor finds issues during fieldwork? The timeline extends; issues require investigation, management response, and sometimes additional audit procedures, usually adding 3–7 days depending on severity.
Q: Should I hire a firm based on speed alone? No—cheap or fast audits often mean corners are cut; prioritize firms that respond promptly and explain their methodology clearly.
Ready to find the right audit firm for your timeline? Start comparing vetted providers today.