How to Prepare for a Financial Audit

By icangirl 03/04/2026 GUIDE 0 Comments

To prepare for a financial audit, start months ahead: close and reconcile every account (cash, receivables, payables, fixed assets), pull a final trial balance and general ledger, gather your supporting documents and contracts, fix issues flagged in the last audit, and name one finance contact to liaise with the auditors. Clean records and early planning are what make an audit smooth.

A financial audit examines your financial statements and the records behind them to confirm they are accurate, complete, and prepared in line with the applicable framework. In Nigeria, the Companies and Allied Matters Act (CAMA) 2020 makes a statutory audit mandatory for most companies, with limited exemptions for small companies that meet the qualifying conditions. Auditors give stakeholders — investors, lenders, the tax authority, and regulators — independent assurance that the numbers can be trusted.

Companies often dread the process, and the reason is almost always the same: poor preparation. Records are scattered, accounts are not reconciled, and last year’s recommendations were never actioned. This guide walks through the steps and documents that turn a stressful scramble into a routine exercise.

What a financial audit is and why it matters

A financial audit is an independent examination of an organisation’s financial statements and the operations behind them. Its purpose is to confirm accuracy, check compliance with the applicable financial reporting framework, and build trust with stakeholders.

For most Nigerian companies, that framework is IFRS Accounting Standards for public interest entities and IFRS for SMEs for smaller businesses, both adopted by the Financial Reporting Council of Nigeria (FRC). The audit itself is carried out under the International Standards on Auditing (ISAs), which the FRC adopts as issued by the IAASB. A clean audit straightens up your records, catches bookkeeping errors before they compound, and signals good governance to anyone deciding whether to invest in or lend to your business.

Types of audit

Internal audit — run by a company’s own staff to test internal controls, risk management, and governance. The findings stay in-house.
External (statutory) audit — carried out by an independent firm and reported to shareholders, regulators, and the public. This is the audit CAMA 2020 requires, and the one most of this guide is about.
Government / tax audit — performed by an authority such as the Federal Inland Revenue Service (FIRS) to confirm a company’s tax returns match its taxable income.
Forensic audit — a targeted investigation to detect fraud or financial misconduct.

How the audit process runs

The framework differs by audit type, but the external audit process generally follows three phases:

Planning — the auditor assesses risk, agrees scope and timeline, requests documents, and assembles the engagement team.
Fieldwork — the auditor tests transactions and balances, inspects records, confirms third-party data, and interviews your staff.
Reporting — the auditor issues the financial statements with footnote disclosures and a signed audit opinion, ready for shareholders and regulators.

Step-by-step: how to prepare for a financial audit

Preparation is the whole game. Work through these steps in the weeks before fieldwork begins.

1. Plan early

Start weeks or months ahead. Gather records for the full financial year and keep them current rather than racing to catch up at year-end. Assign one finance staff member as the single point of contact with the auditors throughout the year.

2. Stay current on standards

Reporting and auditing standards change. Restating prior records to meet a new standard is painful, so keep your accounting team trained on current FRC, IFRS, and FIRS requirements. Note that two significant auditing standards — ISA 240 (Revised) on fraud and ISA 570 (Revised) on going concern — take effect for periods beginning on or after 15 December 2026, so confirm which version applies to your engagement.

3. Review the last audit

Pull the previous year’s audit file and the management letter. Correct anything that was flagged, and check that prior recommendations were actually implemented. Flag any non-financial changes — a new line of business, a system migration, a change in accounting policy — to your auditors early.

4. Build an audit support team

List the documents the auditors will request and assign each one to a named person. Schedule a kick-off meeting, give every team member a clear remit, and hold short review meetings so nothing slips.

5. Reconcile and organise documentation

Before you hand anything over, reconcile every account and review invoices, bills, and vouchers. Required documents typically include:

Category	Documents to prepare
Ledgers and balances	Final trial balance, complete general ledger for the period
Receivables and payables	AR and AP aging reports, revenue by customer and invoice, deferred revenue detail
Cash	Bank reconciliations, cash disbursement records
Assets	Fixed-asset register and roll-forward, prepaid and intangible asset schedules, inventory list with receipt/shipment records
Liabilities and equity	Accrued expense schedule, debt agreements, equity roll-forward
Payroll	Payroll register, pension and tax remittance records
Governance and legal	Memorandum and articles, board minutes, leases and major contracts, stock compensation plans

This list is not exhaustive — auditors will request more as fieldwork progresses.

6. Ask questions before fieldwork

Clarify exactly what each requested document should contain so you do not hand over the wrong report. If you know of a record the auditors have not asked for that is relevant, mention it.

7. Stay available throughout

As the owner or finance lead, be reachable to answer questions only you can answer. Make sure your support team stays focused on the audit rather than getting pulled onto other work.

8. Review results as they come

Get regular feedback during fieldwork rather than waiting for the final report. Confirm every document needed for the report has been supplied, then debrief with your team afterwards to plan improvements.

9. Account for newer reporting areas

Audit scope keeps widening. Be ready on:

Sustainability and ESG reporting — environmental, social, and governance disclosures are increasingly within scope, especially for larger entities.
Digital assets — if you hold cryptocurrency or similar assets, document fair-value measurement and disclosure.
AI and automated tools — if software automates parts of your finance function, be able to show how its decisions and errors are logged and reviewed.

10. Digitise your supporting documents

Auditors increasingly work from electronic records. Store files on access-controlled platforms (a managed Drive, SharePoint, or the firm’s own audit portal), label them clearly, and categorise by financial year and department so nothing is hunted for during fieldwork.

11. Train your staff

Brief employees on what documents may be requested, how to respond to auditor enquiries, and who to route audit questions to. Most audit delays come from internal confusion, not from the auditor.

12. Plan for post-audit recommendations

Even a clean audit usually comes with improvement suggestions in the management letter. Read the feedback, implement the corrective actions, and document the changes — that record is what demonstrates good governance to lenders and investors next year.

Frequently asked questions

What is the difference between accounting and auditing?

Accounting is the ongoing process of recording and reporting financial activity under an applicable framework such as IFRS. Auditing is the independent, periodic check that confirms those accounting records and financial statements are accurate and trustworthy. In short, accounting produces the numbers; auditing verifies them. See our explainer on accountancy versus accounting for more.

Is an external audit mandatory in Nigeria?

Yes, for most companies. CAMA 2020 requires a statutory audit, with a limited exemption for small companies that meet all the qualifying conditions in the Act. Public interest entities have additional FRC obligations on top of the audit.

How long should I spend preparing for an audit?

For a first audit, begin two to three months ahead. Established companies that keep records reconciled monthly can prepare in a few weeks. The deciding factor is not company size but how current and reconciled your books already are.

What documents do auditors always request?

A final trial balance, the general ledger, bank reconciliations, AR and AP aging reports, the fixed-asset register, payroll records, and governance documents such as board minutes and key contracts. The checklist above covers the full set.

Which standards govern audits in Nigeria?

External audits are conducted under the International Standards on Auditing (ISAs), which the FRC adopts as issued by the IAASB. Financial statements themselves follow IFRS Accounting Standards or IFRS for SMEs, depending on the entity.

The bottom line

A financial audit is less about the audit week and more about the months before it. Keep your books reconciled, action last year’s recommendations, organise documents by category, and give your auditors one clear point of contact. Do that, and the audit becomes a routine check rather than a fire drill — and the clean report it produces strengthens your standing with every investor, lender, and regulator who looks at it.

Ican Pathfinder