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Spondoo Accounting
Call for Assistance: 02033 259 341
Spondoo Accounting

How Did Spondoo Audit Determine Your Audit Sample?

February 20, 2026

Why Clients Ask: “How Did You Decide What to Test?”

When we carry out an audit, one of the most common questions we’re asked is:

“How did you decide what to test?”

The short answer is: professional judgement, guided by materiality and risk.

Below, we explain how this works in practice and how Spondoo Audit determines appropriate audit samples.

What Is Materiality?

Materiality is a key concept in auditing. It represents the maximum level of error or misstatement in the financial statements that could reasonably influence the decisions of users, such as shareholders, lenders, or other stakeholders.

In simple terms, materiality helps us answer the question:

“At what point would an error actually matter?”

Materiality is determined for the financial statements as a whole, not for individual transactions in isolation.

Choosing the Right Benchmark

To calculate materiality, we first select an appropriate benchmark. The benchmark chosen depends on the nature of the business and what users of the accounts are most likely to focus on.

Common Benchmarks Include:

  • Turnover

  • Profit before tax

  • Adjusted profit or loss

  • Gross assets

  • Net assets

Examples:

  • A profit-oriented trading company may be best assessed using profit before tax

  • A not-for-profit organisation may be better assessed using total income or expenditure

  • An asset-rich company may require gross or net assets to be the primary benchmark

There is no single “correct” benchmark — selecting the most appropriate one requires professional judgement and a clear understanding of the business.

Applying a Materiality Percentage

Once a benchmark is selected, we apply a percentage to calculate overall financial statement materiality. The percentage applied varies depending on the benchmark and circumstances.

Typical Ranges Used in Practice

For Example:

  • Around 5% of profit before tax may be appropriate for a profit-making private company

  • Around 1% of turnover may be more appropriate where profit levels fluctuate or are not the main focus

However, these percentages are guidelines, not rules. Higher or lower percentages may be appropriate depending on the specific circumstances.

Factors That Influence Our Judgement

The final materiality level may be influenced by:

  • Whether the business is owner-managed or has external investors

  • Whether the company is publicly traded

  • The expectations and needs of users of the financial statements

  • The stability or volatility of results

  • Regulatory or reporting sensitivities

For example, a lower materiality threshold may be applied where accounts are relied upon by external funders or regulators.

Setting Materiality Early in the Audit

Materiality is set at the planning stage of the audit. Even where draft accounts or management information are not yet available, we establish an initial materiality based on expected figures, not simply last year’s numbers.

We may use information such as:

  • Prior year results

  • VAT returns

  • Management forecasts

  • Knowledge of changes in the business

Materiality is then reviewed and adjusted if necessary as the audit progresses.

How Materiality Affects Audit Sampling

Materiality does not depend on audit risk. Instead:

  • Materiality reflects what matters to users

  • Risk determines how much work we do

Once materiality is set, it helps us decide:

  • Which balances and transactions to focus on

  • How large our audit samples need to be

  • The nature and extent of audit testing

Higher-risk areas will attract more detailed testing, even if the amounts involved are below overall materiality.

Why We Don’t “Average” Materiality

Some audit approaches attempt to calculate materiality by averaging figures based on turnover, profit, and assets. We do not consider this an appropriate method.

Averaging can dilute focus and fail to reflect where the real risks lie. Instead, we:

  • Select the most relevant benchmark

  • Consider others only where justified

  • Clearly document our reasoning

This ensures materiality is tailored to the business, not mechanically calculated.

Transparency and Documentation

At Spondoo Audit, we fully document:

  • The benchmark selected

  • The percentage applied

  • The reasoning behind our judgement

  • Any changes made during the audit

This ensures our approach is robust, defensible, and compliant with auditing standards.

In Summary: How Spondoo Audit Determines Your Audit Sample

Our audit sampling is:

  • Based on clearly defined materiality

  • Tailored to your business

  • Driven by professional judgement, not rigid formulas

  • Adjusted as needed during the audit

If you’d like to understand more about how our audit approach applies specifically to your company, we’re always happy to explain — clearly and without jargon.

Reach out to us today.

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Information provided on this site is for general guidance only and may change in line with UK law and regulations. It should not be relied upon as financial advice or as the sole basis for making decisions. Accounting SQL Limited (trading as Spondoo) is authorised and regulated by the Institute of Financial Accountants (IFA). Spondoo Audit Limited is authorised and regulated by the Institute of Chartered Accountants in England and Wales (ICAEW) to provide statutory audit services.
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