One of the most common questions during audit planning is: what is a PBC in an audit, and why does it matter?
Well, the audit starts even before the auditor arrives. Most CPAs understand that audit preparation begins well before fieldwork starts. However, a pre-audit checklist, known as PBC, still causes delays and problems across engagements of all sizes.
This guide aims to define what PBC is and why it is necessary.
What is the PBC meaning in an audit?
PBC stands for Prepared by Client. In audit practice, the term “PBC” refers to any document, schedule, reconciliation, or data file that the client prepares and submits to the audit team for review.
The PBC list (also referred to as the Prepared by Client list) is the compiled inventory of all those items. It is, in effect, the audit’s intake document.
When auditors issue a PBC request, they are formally asking the client to gather and deliver a defined set of materials. Those materials become the evidentiary foundation of the audit. While fieldwork can begin with some outstanding requests, timely receipt of key PBC items is essential for efficient audit execution.
According to the Auditing Standards Board (ASB) of the AICPA, auditors must have adequate supporting evidence before expressing their opinion. The PBC list is used to help arrange and collect most of the documentation provided by the client during the auditing process.
PBC in audit: What the list contains
A PBC list is not a standard checklist for all auditors. The contents of the list vary depending on the size of the business, the industry, the auditor’s objective, and the previous year’s experience.
However, some common points that would be found in any PBC list include:
Financial statements and trial balances: Drafted financial statements, including the income statement, balance sheet, and cash flow statement, along with the trial balance, whether adjusted or unadjusted.
General ledger detail: Detailed postings at the transaction level of all accounts covered under the scope of the audit.
Bank statements and reconciliation: All active bank accounts along with the client’s own reconciliation reports. These are typically among the first items requested on a PBC list.
Accounts receivable & payable aging schedules: Aging schedules are used to assess the collectability of receivables, the completeness of payables, and proper period-wise matching.
Debt agreements and loan schedules: Copies of loan agreements, debt schedules, covenant calculations, and amortization schedules.
Payroll records: Payroll summary, officer’s remuneration schedule, and payroll tax forms.
Schedules for fixed assets: Preparing a rolling forward of fixed assets, including disposals, additions, and depreciation information, is a recurring task in all audits.
Contractual and legal correspondence: Significant contracts, litigation documents, legal correspondence, and attorney representation letters where applicable.
Board and shareholder minutes: Minutes of board meetings, shareholder meetings, and governance committee meetings held during the reporting period.
Tax filings: Prior-year tax returns, current-year tax filings, and correspondence with relevant tax authorities.
PCAOB AS 1105 — Audit Evidence outlines the criteria that govern what constitutes acceptable evidence. Every item on a PBC list must ultimately serve that standard. Similar standards are set forth in AU-C Section 500 (Audit Evidence) and ISA 500 (Audit Evidence), which both require auditors to gather sufficient and appropriate evidence to support their findings.
PBC in accounting: How it differs from audit use
The term “PBC” in accounting has a slightly broader meaning. In accounting practice, the term PBC can be applied to any document prepared by a client and used in a review, compilation, or internal examination, and not just during an audit.
During review engagements, firms commonly issue a PBC request to obtain supporting schedules and financial information. Although the scope is typically narrower than in an audit, the process itself is no different.
In internal audit practice, PBC lists are sent out before conducting a review of operational activities, compliance, or a special purpose engagement. In internal audits, the information is typically provided by business units or departments within the organization rather than by an external client.
In this sense, the PBC in accounting practice cannot be considered exclusive to audits alone. This term can be used for any kind of assurance or advisory activity performed using documents provided by the object of a review.
Why PBC management breaks down
The concept is simple. The execution is not.
On the ground, however, the process of collecting PBC material remains arguably the most operationally vulnerable part of any audit project. Audit managers responsible for numerous projects simultaneously have found that the inability to submit all PBC materials is the primary cause of delays and scope expansion in the field.
Common operational challenges include:
Lack of a single client contact point: PBC requests cross-over departments such as finance, legal, HR, and operations; therefore, without a responsible person to control the process, tasks are not completed in a timely manner or assigned to someone else.
Problems with version control: In many cases, clients modify their schedules and other supporting documents after the task is complete, making it impossible for auditors to perform a meaningful reconciliation.
Use of emails: Some firms still rely on email messages to track the PBC list; however, the list is often lost among other emails, resulting in missed deadlines and a lack of an audit trail for any item collected.
Delays affect fieldwork: Late submissions mean less time can be spent properly reviewing materials.
The Center for Audit Quality has consistently noted that audit quality is directly tied to engagement planning and evidence management. A poorly managed PBC process undermines both.
What a strong PBC request looks like
A properly crafted PBC letter should have traits that make the process easier for everyone. This letter must be sent at the right time, that is, about four to six weeks before the beginning of fieldwork for the year-end audit.
The letter uses clear language, is numbered, and is associated with the corresponding audit areas. Deadlines are set for each item, not just one deadline for the whole submission.
It also includes a defined escalation path. If an item cannot be delivered by the stated date, there is a documented process for communicating the delay and agreeing on an alternative timeline.
Most importantly, it is treated as a living document, updated as the scope evolves and tracked in real time, rather than reconciled retrospectively.
The technology shift in PBC management
The days of maintaining the PBC list in a collaborative spreadsheet or email inbox are coming to an end. The modern audit-specific platform manages PBC requests by requesting them, monitoring their delivery, identifying any outstanding PBCs, and maintaining a record of all evidence. There are three important points behind this shift.
First, it adds transparency to the process by ensuring that both parties can see whether the requested item has been delivered. Second, there is accountability when deadlines can be identified and delays logged. Third, it enables quality control, since all PBC items can be matched to an objective before fieldwork.
The preparation of audit documentation for entities that are under PCAOB inspections is more than just an administrative task. Under AS 1215 – Audit Documentation, documentation shall be made complete enough to justify the audit conclusion reached. Ineffective PBC management can increase the risk of incomplete documentation, delayed testing, and audit quality issues if evidence is not properly obtained and retained.
Conclusion
It is the starting point for the audit process through the PBC list. For CPAs who manage multiple audits simultaneously, it will be vital how successfully they design and manage their PBC lists.
This is where AuditConfirm can help. AuditConfirm allows auditors to send out their PBC requests, track their receipt, and keep an up-to-date record of evidence collected without any hassle, thereby overcoming the bottleneck of the PBC process.
An efficient audit process starts with efficient PBC management.
FAQs
PBC, in an audit, means “Prepared by Client”—documents, schedules, and data files assembled by the client and submitted to the auditor as the evidentiary foundation of the engagement.
PBC in audit refers to the formal list of client-prepared materials that an auditor requests before fieldwork begins. Without it, there is no evidence to test, and the engagement cannot proceed.
The PBC audit meaning extends beyond external auditing, as the document preparation model used by clients also applies to review, compilation, and internal audit engagements.
PBC in accounting has a broader meaning. It covers any client-prepared workpaper used across assurance and advisory engagements, not just statutory audits. However, the discipline around tracking and documentation remains the same.
An effective PBC request should clearly identify each required document, specify the relevant audit area, assign a due date, identify the responsible client contact, and provide instructions for communicating delays or questions.