Financial Audits: What to Check, Key Areas, Formulas & Simple Examples
Financial audits help companies check whether their financial reports are accurate, complete, and trustworthy. A financial audit is like a detailed health check for a company’s money, accounting records, financial statements, and internal controls.
The main goal of financial audits is to give confidence to owners, investors, banks, suppliers, tax authorities, and business partners. When the financial information is clear and correct, people can trust the company and make better business decisions.
At Consultant4Companies, we help businesses improve financial reporting, prepare audit-ready documents, strengthen internal controls, and build better accounting processes.

A financial audit usually checks revenue, expenses, assets, liabilities, equity, bank records, and internal controls. The auditor also reviews whether the company follows accounting standards such as GAAP or IFRS.
1. What Are Financial Audits?
Financial audits are independent reviews of a company’s financial statements. The auditor checks whether the numbers are fair, accurate, and supported by real evidence.
Financial statements usually include:
- Income statement
- Balance sheet
- Cash flow statement
- Statement of equity
- Notes to the financial statements
The auditor checks whether these reports show a true and fair view of the company’s financial position and performance.
The purpose of financial audits is to verify that the company’s financial information is accurate, transparent, and reliable.
GAAP means “Generally Accepted Accounting Principles.” These are common accounting rules used mainly in the United States. IFRS means “International Financial Reporting Standards.” These are global accounting rules used in many countries.
Learn more about financial transparency:
financial reporting and decision-making
2. Why Financial Audits Matter
Financial audits help businesses find mistakes, reduce fraud risk, improve controls, and increase trust. They are useful for small businesses, growing companies, and large international groups.
Financial audits help companies:
- Verify financial statements
- Find accounting errors
- Detect fraud risks
- Improve internal controls
- Support bank financing
- Prepare for investors
- Improve tax compliance
- Strengthen management decisions
A strong audit process can improve credibility. However, weak audit results may show that the company needs better accounting systems, stronger controls, or clearer financial management.
3. What to Audit During Financial Audits
During financial audits, auditors normally review the main areas of the business accounts.
- Revenue
- Expenses
- Assets
- Liabilities
- Equity
- Internal controls
- Bank reconciliations
- Financial reporting processes
Each area helps the auditor understand whether the company’s financial information is correct and complete.
4. Revenue Audit: Checking Company Income
Revenue is the money a company earns from selling products or providing services. In simple words, revenue is the money that comes into the company from customers.
During financial audits, auditors check whether revenue was recorded correctly. They also verify that revenue was recorded only when the company really earned it.
Examples of Revenue
- Sales revenue: Money earned from selling products.
- Service fees: Money earned from providing services.
- Subscription fees: Regular income from monthly or yearly subscriptions.
- Rental income: Money received from renting property or equipment.
- Licensing fees: Money earned when another business uses intellectual property.
- Interest income: Money earned from investments or loans.
- Commission income: Money earned from facilitating transactions.
- Consulting fees: Money earned from advisory or consulting services.
Revenue Formula
Revenue = Quantity Sold × Selling Price
Revenue Example 1
ABC Electronics sells 100 smartphones at €500 each.
- Quantity sold = 100 smartphones
- Selling price = €500
Revenue = 100 × €500 = €50,000
ABC Electronics should record €50,000 as revenue.
Revenue Example 2
A company sells 200 units at €50 each.
Revenue = 200 × €50 = €10,000
The auditor compares the calculated revenue with the revenue shown in the financial statements. If the numbers do not match, the auditor investigates further.
5. Expense Audit: Checking Company Costs
Expenses are the costs a company pays to operate. In simple words, expenses are the money the company spends to run the business.
During financial audits, auditors check whether expenses are real, properly approved, correctly classified, and recorded in the correct period.
Examples of Expenses
- Wages and salaries: Payments to employees.
- Rent: Cost of office, shop, warehouse, or equipment space.
- Utilities: Electricity, water, gas, and internet costs.
- Supplies: Office materials and business consumables.
- Insurance: Payments for business insurance.
- Marketing: Advertising and promotion costs.
- Interest expense: Interest paid on loans.
- Maintenance: Repairs and upkeep costs.
- Taxes: Business taxes and related payments.
- Professional fees: Lawyers, accountants, consultants, and advisors.
- Travel: Business travel and client meeting costs.
Expense Formula
Expense = Quantity Used × Cost per Unit
Expense Example 1
A company uses 100 gallons of gasoline for delivery trucks. Each gallon costs €2.
Expense = 100 × €2 = €200
The company should record €200 as gasoline expense.
Expense Example 2
A company uses 500 units of a resource. Each unit costs €10.
Expense = 500 × €10 = €5,000
The auditor checks invoices, receipts, approvals, and accounting entries to confirm that the expense is valid.
6. Asset Audit: Checking What the Company Owns
Assets are valuable things a company owns. Assets can be physical, such as buildings and machines, or non-physical, such as patents, software rights, and trademarks.
During financial audits, auditors check whether assets exist, belong to the company, and are valued correctly.
Examples of Assets
- Cash: Money in bank accounts or cash registers.
- Accounts receivable: Money customers owe to the company.
- Inventory: Products held for sale.
- Property, plant, and equipment: Buildings, machines, vehicles, and tools.
- Investments: Shares, bonds, or other financial investments.
- Intangible assets: Patents, trademarks, copyrights, software, and goodwill.
- Prepaid expenses: Payments made before receiving goods or services.
- Land: Property owned by the company.
Asset Valuation Formula
Asset Value = Fair Market Value
Asset Example
A company owns a machine with a fair market value of €15,000.
Asset Value = €15,000
The auditor may check purchase invoices, depreciation schedules, asset registers, insurance documents, and physical existence.
Inventory Valuation Formula
Inventory Value = Quantity of Items × Unit Cost
Inventory Example
A company has 100 products in stock. Each product costs €10.
Inventory Value = 100 × €10 = €1,000
Inventory Turnover Formula
Inventory Turnover = Cost of Goods Sold / Average Inventory
Inventory Turnover Example
A company has cost of goods sold of €1,000,000 and average inventory of €500,000.
Inventory Turnover = €1,000,000 / €500,000 = 2
Days in Inventory Formula
Days in Inventory = 365 / Inventory Turnover
If inventory turnover is 2, then:
Days in Inventory = 365 / 2 = 182.5 days
Learn more about balance sheet analysis:
understanding the balance sheet
7. Liability Audit: Checking What the Company Owes
Liabilities are amounts the company owes to other people, banks, suppliers, employees, or tax authorities. In simple words, liabilities are the company’s financial responsibilities.
During financial audits, auditors check whether liabilities are complete, accurate, and properly valued.
Examples of Liabilities
- Bank loans: Money borrowed from a bank.
- Accounts payable: Supplier invoices the company must pay.
- Salaries payable: Employee wages owed but not yet paid.
- Unearned revenue: Money received before goods or services are delivered.
- Accrued expenses: Costs incurred but not yet paid.
- Long-term debt: Debt payable over several years.
- Mortgages: Loans used to buy property.
- Deferred tax liabilities: Taxes that will be paid later.
- Warranty liabilities: Expected future warranty costs.
Liability Valuation Formula
Liability Value = Present Value of Future Cash Flows
Liability Example
A company expects to pay €20,000 in future liabilities. After discounting the future payment to today’s value, the liability is worth €18,000.
Liability Value = €18,000
The auditor may review loan agreements, supplier statements, tax records, payroll records, and legal obligations.
Learn more about accounts payable and receivable:
accounts receivable and payable management
8. Equity Audit: Checking Owner Value
Equity is what remains for the owners after all liabilities are deducted from assets. In simple words, equity is the owner’s value in the company.
During financial audits, auditors check whether equity accounts are accurate and properly recorded.
Examples of Equity
- Common stock: Ownership shares issued to investors.
- Preferred stock: Shares with special rights.
- Retained earnings: Profits kept in the company instead of paid out.
- Additional paid-in capital: Amount paid by investors above share value.
- Treasury stock: Shares bought back by the company.
- Owner’s equity: The owner’s remaining interest in the business.
Equity Formula
Equity = Assets – Liabilities
Equity Example
A company has €1,000,000 in assets and €500,000 in liabilities.
Equity = €1,000,000 – €500,000 = €500,000
The auditor checks whether owner contributions, dividends, retained earnings, and share transactions are correct.
9. Internal Controls Audit
Internal controls are rules, checks, and procedures that protect the company’s money and financial information. They help prevent mistakes, fraud, and poor financial management.
During financial audits, auditors check whether internal controls are strong enough to prevent or detect important errors.
Examples of Internal Controls
- Segregation of duties: Different people handle approval, payment, and recording.
- Authorization procedures: Important payments need approval.
- Physical controls: Cash, inventory, and documents are protected.
- Reconciliations: Bank records are compared with accounting records.
- Documentation: Transactions are supported by invoices and records.
- Internal audits: The company reviews its own controls.
- IT controls: Passwords, access rights, backups, and cybersecurity controls protect data.
- Budget controls: Actual results are compared with budgeted amounts.
- Training: Employees understand financial policies.
- Whistleblower process: Employees can report fraud or misconduct safely.
COSO Internal Control Framework
COSO = Control Environment + Risk Assessment + Control Activities + Information and Communication + Monitoring
COSO (Committee of Sponsoring Organizations of the Treadway Commission) Explained in Simple Words
- Control environment: The company’s attitude toward ethics, rules, and responsibility.
- Risk assessment: How the company identifies financial risks.
- Control activities: The practical checks that reduce risk.
- Information and communication: How financial information is recorded and shared.
- Monitoring: How the company checks whether controls still work.
A strong internal control system makes financial audits easier and reduces the risk of errors or fraud.
Learn more about financial management:
accounting and financial management solutions
10. Bank Reconciliation Audit
Bank reconciliation means comparing the company’s accounting records with bank statements. This helps confirm that cash records are correct.
During financial audits, auditors may check:
- Bank reconciliation policy: Does the company have a clear process?
- Timeliness: Are bank reconciliations prepared regularly?
- Accuracy: Do bank balances match accounting records?
- Discrepancies: Are differences investigated and corrected?
Bank Reconciliation Example
If the accounting system shows €50,000 in cash but the bank statement shows €48,000, the auditor investigates the €2,000 difference. The difference may come from bank fees, outstanding checks, deposits in transit, or accounting errors.
11. Simple Financial Audit Checklist
| Audit Area | What to Check |
|---|---|
| Revenue | Sales invoices, contracts, delivery proof, pricing, revenue timing |
| Expenses | Supplier invoices, approvals, payment records, expense classification |
| Assets | Cash, inventory, equipment, receivables, asset valuation |
| Liabilities | Loans, supplier balances, taxes, payroll obligations, accrued expenses |
| Equity | Owner contributions, retained earnings, dividends, share transactions |
| Internal Controls | Approvals, access rights, segregation of duties, reconciliations |
12. Common Problems Found During Financial Audits
Financial audits often reveal problems that management did not see before.
- Revenue recorded too early
- Missing supplier invoices
- Incorrect expense classification
- Old inventory still valued too high
- Unrecorded liabilities
- Weak approval controls
- Poor bank reconciliations
- Missing documents
- Incorrect depreciation
- Weak accounting system access controls
Finding these problems early helps companies improve financial accuracy and avoid bigger risks later.
13. Financial Audit Formulas Summary
| Formula | Calculation |
|---|---|
| Revenue | Quantity Sold × Selling Price |
| Expense | Quantity Used × Cost per Unit |
| Asset Value | Fair Market Value |
| Inventory Value | Quantity of Items × Unit Cost |
| Inventory Turnover | Cost of Goods Sold / Average Inventory |
| Days in Inventory | 365 / Inventory Turnover |
| Liability Value | Present Value of Future Cash Flows |
| Equity | Assets – Liabilities |
14. Professional Financial Audit Resources
For professional audit and accounting guidance, these resources can help:
15. Frequently Asked Questions About Financial Audits
What is a financial audit?
A financial audit is an independent review of a company’s financial statements, accounting records, and internal controls.
What do auditors check during financial audits?
Auditors check revenue, expenses, assets, liabilities, equity, bank reconciliations, supporting documents, and internal controls.
Why are financial audits important?
Financial audits help confirm that financial reports are accurate and trustworthy. They also help identify risks, mistakes, and weak controls.
What is the difference between GAAP and IFRS?
GAAP is mainly used in the United States. IFRS is used in many countries around the world. Both provide accounting rules for preparing financial statements.
Can financial audits help prevent fraud?
Financial audits can help identify fraud risks and weak controls. However, audits do not guarantee that every fraud will be found.
Need Help Preparing for Financial Audits?
At Consultant4Companies, we help businesses improve financial reporting, prepare audit-ready documentation, strengthen internal controls, review accounting processes, and build better financial management systems.







