---
title: How Do Auditors Verify Account Balances and Transactions?
description: Here are some common sources of “substantive evidence” that auditors gather to help them form an opinion regarding your financial statements.
image: https://blog.sweeneyconrad.com/hubfs/IRS%20Audit-1.jpeg
---
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# How Do Auditors Verify Account Balances and Transactions?
By Bryce Carter, CPA | Dec 31, 2024
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INSIGHTS/BLOG
Audit season is just around the corner for calendar-year entities. Understanding the types of source documents your audit team might request can minimize disruptions during audit fieldwork and maximize your audit’s effectiveness. Here are some common sources of “substantive evidence” that auditors gather to help them form an opinion regarding your financial statements.
#### **Original source documents**
Auditors can verify account balances or records by vouching (or comparing them to third-party documentation). For example, an auditor might verify the existence of a vehicle on your company’s fixed asset list by reviewing the invoice from the seller. This process allows auditors to evaluate the accuracy of amounts claimed by the company and whether the company recorded transactions correctly in its accounting system.
#### **Physical observations**
Seeing is believing. Auditors sometimes verify the existence of assets through physical observations and inspections. For example, inventory audit procedures typically include:
- Observing or conducting a physical inventory count,
- Inspecting the process to record incoming and outgoing inventory, and
- Analyzing the inventory obsolescence process.
#### **Confirmation letters**
Auditors commonly send confirmations to third parties, asking them to verify such items as cash, accounts receivable, accounts payable, employee benefit plans and pending litigation. There are three types of confirmations:
1. **Positive.** Recipients are requested to reply directly to the auditor and make a positive statement about whether they agree or disagree with the information included.
2. **Negative.** Recipients are requested to reply directly to the auditor only if they disagree with the information presented in the confirmation.
3. **Blank.** This type of request doesn’t state the amounts (or other information). Instead, it requests recipients to complete a blank confirmation form.
In the past, auditors sent out confirmation letters through the U.S. Postal Service. Although written confirmations are still permitted, auditors routinely use electronic confirmations today. These may be in the form of an email submitted directly to the respondent by the auditor or a request submitted through a designated third-party provider. Some financial institutions no longer respond to paper confirmation requests and will respond only to electronic confirmation requests.
#### **External market data**
For assets actively traded on the open market, auditors may verify amounts claimed on the company’s financial statements by researching pricing data. For example, if the company invests in marketable securities it plans to sell within one year, an auditor could analyze the prevailing market price to confirm their book value. Similarly, auditors may sample inventory items and compare them to online pricing sheets to ensure items are reported at the lower of cost or market value.
#### **Recalculations **
Auditors may verify in-house schedules and records by independently recalculating them. If the auditor’s work matches the client’s work, it confirms that the underlying accounts appear reasonable. Auditors often rely on this procedure for such items as bank reconciliations and schedules of payroll-related expenses (for example, overtime, benefits and tax payments).
#### **Let’s work together**
To streamline your upcoming audit, let’s discuss the types of substantive evidence we expect to gather for each major financial statement category. We can help you anticipate document requests and inquiries, thereby facilitating audit fieldwork.
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