How an IRS Review Works
An IRS Review typically begins by defining the relevant tax periods, entities, jurisdictions, and tax areas. Finance and tax teams then reconcile filed returns with accounting data and assemble evidence supporting significant positions. The review should prioritize transactions that have a material effect on taxable income or require judgment in their tax treatment.
- Compare tax returns with general ledger balances and financial statements.
- Test supporting documentation for material deductions, credits, and tax positions.
- Review transaction coding, account classifications, and tax treatment.
- Trace selected transactions from source documents through accounting and tax reporting.
- Document explanations for unusual movements, adjustments, and reconciliations.
Where vendor activity forms part of the review population, Audit Trails can provide a record of actions and decisions, helping establish transparency over who performed or approved relevant vendor-management activities.
Key Areas Examined
The scope depends on the company's operations and tax profile, but several areas commonly receive close attention. Income and expense recognition should reconcile to accounting records, while deductions should have appropriate business purpose and documentation. Related-party transactions may require additional evidence, particularly where pricing, intercompany charges, or allocations affect taxable income.
Procurement records can also support the tax position. A purchase order may provide evidence of the underlying business purpose, authorized expenditure, supplier relationship, and transaction terms when tracing expenses from procurement through accounting and tax reporting.
Accounting structure is equally important. A properly maintained chart of accounts helps distinguish taxable and nontaxable activity, deductible and nondeductible expenses, and accounts requiring tax-specific adjustments. Consistent classification improves reconciliation between financial reporting and tax workpapers.
Tax Validation and Documentation
Indirect taxes can intersect with an IRS Review when transactions involve state or local obligations, exemptions, or multi-jurisdiction activity. Teams should evaluate whether sales tax treatment aligns with applicable jurisdiction rules, exemption documentation, nexus considerations, and transaction characteristics. Although federal income tax and sales tax are distinct areas, inconsistent tax documentation can create questions about the completeness of transaction-level controls.
Documentation should be organized around the tax position it supports. Contracts, invoices, receipts, payroll records, depreciation schedules, legal documents, reconciliations, and calculation workpapers should be traceable to the relevant accounting entries and filing positions.
Review of Accounting and Tax Positions
An IRS Review should distinguish between routine accounting activity and positions requiring professional judgment. Temporary differences, depreciation methods, compensation arrangements, business expenses, credits, and transaction-specific deductions may require additional analysis. The review should capture the rationale, supporting authority, calculation, approval, and financial statement or tax-return impact associated with significant positions.
Related finance workflows can provide useful context. An Irs Contract may be relevant when reviewing contractual terms that influence tax obligations or reporting treatment. A P L Review can help connect income and expense movements to the tax position being examined, while a Coding Review can assess whether transactions have been classified consistently with accounting and tax requirements.
Best Practices for IRS Review
- Maintain source-to-return traceability: Link significant tax-return amounts to reconciled accounting balances and supporting workpapers.
- Prioritize material positions: Focus detailed testing on transactions and judgments with meaningful tax or financial reporting impact.
- Standardize documentation: Use consistent evidence requirements for deductions, credits, reconciliations, and adjustments.
- Separate accounting and tax adjustments: Clearly identify book-to-tax differences and the rationale for each adjustment.
- Preserve approval evidence: Retain records showing review, authorization, and resolution of significant tax positions.
- Refresh reviews periodically: Reassess processes when tax rules, business structures, transaction patterns, or accounting systems change.
Business Importance of IRS Review
A disciplined IRS Review improves the quality of tax reporting and gives finance leaders greater visibility into the evidence supporting reported positions. It can also strengthen financial reporting controls by exposing differences between operational transactions, accounting classifications, tax calculations, and filed returns.
The broader value is not limited to preparing for an examination. A well-documented review creates reusable evidence for tax compliance, supports management decisions, improves reconciliation discipline, and helps finance teams understand how operational activity affects taxable income and financial performance.
Summary
IRS Review provides a structured way to evaluate tax filings, accounting records, transaction evidence, and internal controls against applicable IRS requirements. By connecting source documentation to accounting entries and tax positions, organizations can improve tax reporting accuracy, documentation quality, audit readiness, and financial decision-making.