A financial audit normally takes 1.5-2.5 weeks for a simple company and 3-5 weeks for manufacturing, inventory-heavy or first-year audits. The fastest route is early auditor appointment, interim testing and complete audit evidence before final fieldwork starts.
Typical audit timeline
In a statutory audit, the calendar starts before the auditor issues the opinion. A realistic plan includes engagement acceptance, planning, interim procedures, inventory observation, final fieldwork, review of financial statements, management representations and signing of the audit report.
| Company profile | Typical duration | Main driver |
|---|---|---|
| Service or trading company, limited inventory | 1.5-2.5 weeks | Completeness of reconciliations and tax/accounting documentation. |
| Manufacturing or inventory-heavy entity | 3-5 weeks | Inventory count observation, WIP valuation and costing evidence. |
| First-year audit | Usually 15-25% longer | Opening balances, predecessor auditor communication and understanding the business. |
| Group reporting or IFRS package | 4-6 weeks or more | Group deadlines, reporting package quality and consolidation evidence. |
What extends the audit?
The audit usually slows down when evidence is delivered in fragments, trial balances keep changing or the finance team cannot explain accounting estimates. The most common bottlenecks are inventory, revenue cut-off, impairment, deferred tax, provisions, leases and post-balance-sheet events.
- Late documentation: bank confirmations, legal letters, inventory count sheets and tax reconciliations arrive after fieldwork starts.
- Unclear ownership: nobody is responsible for answering auditor questions within an agreed time window.
- Changing numbers: financial statements are revised after audit testing has already been performed.
- Weak closing process: intercompany balances, accruals and management estimates are not locked before the audit.
How to shorten the audit
The fastest audits are prepared before the year-end close. Management should agree an audit timetable, provide a PBC list, assign owners and prepare reconciliations in an audit-ready format. For companies with material inventory, the auditor should be appointed before the inventory count.
What does the auditor focus on?
The auditor focuses on sufficient appropriate audit evidence. That includes reconciliations to the general ledger, source documents, management assumptions, external confirmations and clear explanations for significant estimates. Good preparation also reduces the risk of management letter observations and last-minute audit adjustments.
For a broader checklist, see how to prepare for a financial audit and what a new auditor checks first.
Frequently asked questions
Need a realistic audit timetable?
JMFC helps finance teams organise audit evidence, closing discipline and communication so the statutory audit does not become a year-end bottleneck.