Summary: Routine, disciplined reviews of GL transactions enable contractors to identify unallowable costs early, maintain the integrity of indirect cost pools, and support credible estimating and forecasting. For larger organizations, recurring, risk-based sampling provides practical oversight while generating tangible evidence of effective internal controls.
Introduction
Accurate cost classification at the transaction level is foundational to FAR compliance, audit readiness, and long-term financial health. While high-level financial statements provide a snapshot of performance, they rarely reveal whether costs are properly allowable, allocable, and consistently treated under FAR.
The real compliance risk, and opportunity, resides in the general ledger.
The General Ledger: More Than an Accounting Record
For government contractors, the general ledger is not just an accounting artifact but also a compliance document. Every transaction recorded in the GL ultimately supports claimed costs billed to the government, whether through invoices, incurred cost submissions, or indirect rate proposals.
FAR 31.2012 requires that costs be reasonable, allocable, compliant with CAS or GAAP, and adequately documented. These requirements cannot be satisfied solely through financial statement reviews; they demand visibility into transaction level details such as where costs were charged, how they were described, and whether they align with contract and regulatory requirements.
Without routine GL review, unallowable or misclassified costs can be embedded in indirect pools, overstating rates and increasing exposure during audit.
Understanding Allowable vs. Unallowable Costs
One of the most common compliance breakdowns occurs when contractors understand unallowable costs conceptually, but fail to operationalize that knowledge in the GL.
FAR 31.205 outlines specific cost categories that are expressly unallowable, partially allowable, or allowable only under defined conditions.
Expressly Unallowable Cost Categories
These costs must be identified and excluded at the transaction level:
- Entertainment, alcohol, and social activities (FAR 31.205‑14)
- Lobbying and political activity (FAR 31.205‑22)
- Fines, penalties, and late fees (FAR 31.205-15)
- Bad debt (FAR 31.205-3)
- Contributions and donations (FAR 31.205-8)
- Interest and related financing costs (FAR 31.205-20)
- Organization and reorganization costs, including certain mergers and acquisitions (FAR 31.205-27)
Sometimes Allowable/Sometimes Unallowable Categories
These categories frequently create audit findings when purpose, timing, or documentation is unclear:
- Advertising and Public Relations: Allowable for recruiting, procurement, or required contract communications; unallowable for image enhancement or promotion (FAR 31.205‑1)
- Legal and Professional Services: Allowable for routine contract administration; unallowable when related to claims against the government, fraud proceedings, or violations of law (FAR 31.205‑47)
- Travel Costs: Allowable when reasonable and compliant with cost principles; unallowable when excessive, inadequately supported, or non‑business related (FAR 31.205‑46)
- Employee Morale, Welfare, and Compensation Costs: Allowable when reasonable and in line with established policy; unallowable if excessive, discriminatory, or outside normal business practice (FAR 31.205‑6)
- Training and Education Costs: Allowable when directly related to contract performance or employee development; unallowable if unrelated or primarily personal in nature (FAR 31.205‑44)
If these costs are not clearly identified, documented, and segregated in the GL at the time of posting, they may inadvertently flow into indirect cost pools, and ultimately, be billed to the government, creating audit findings, repayment risk, and increased scrutiny of estimating and accounting systems. Proper GL coding is not just an accounting exercise, it is a critical defense during incurred cost, estimating system, and billing audits.
Why Transaction Level Review Matters
High-level account balances rarely reveal compliance issues. Two expenses may sit in the same natural account but have very different allowability treatments under FAR.
Consider the following scenarios:
- Professional fees may include allowable consulting costs and unallowable lobbying support.
- Travel expenses may include allowable business travel and unallowable entertainment.
- Employee morale costs may cross the line into expressly unallowable social activities.
A transaction level GL review allows finance and compliance teams to assess:
- The nature and purpose of each cost
- The description quality supporting allowability
- Whether the cost was charged to the correct account, project, and pool
This level of scrutiny is exactly what auditors apply during DCAA and DCMA reviews.
The Role of Sampling in Large Organizations
For larger contractors with high transaction volumes, reviewing every transaction is neither practical nor expected. Instead, recurring, risk-based sampling is a recognized and effective control mechanism when designed and executed properly.
Key Benefits of a Structured Sampling Approach
- Demonstrable internal controls: Periodic sampling provides tangible evidence that management actively monitors cost allowability, classification, and allocability, which are key elements auditors look for when assessing accounting and estimating system adequacy.
- Early detection of systemic issues: Sampling helps identify recurring mischarges, weak descriptions, or training gaps before they escalate into material audit findings or questioned costs.
- Support for management assertions: Documented sampling results strengthen management’s position during audits by showing proactive oversight rather than reactive correction.
- Alignment with audit methodologies: Auditors themselves rely heavily on sampling. When contractor sampling approaches are disciplined, consistent, and well-documented, they often align closely with audit expectations and reduce follow-up requests.
- Sustainable compliance at scale: Regular sampling (e.g., monthly, quarterly, or aligned to close cycles) creates a repeatable process that embeds compliance into normal financial operations, rather than treating it as a one-off exercise.
Control Evidence, Don’t Just Review
When transaction-level sampling is performed consistently and findings are tracked, corrected, and trended, it is evidence of an effective internal control environment, and it supports:
- Accounting system adequacy
- Estimating system reliability
- Confidence in indirect rate development
- Reduced risk of significant audit adjustments
For large contractors, disciplined sampling is the practical bridge between theoretical compliance and operational reality. It shows auditors that management understands the risks, monitors them regularly, and takes corrective action before the government has to intervene.
Indirect Cost Pools and Rate Integrity
Improper GL classification directly impacts indirect rates, which affect competitiveness and recoverability. When unallowable costs are embedded in overhead, G&A, or fringe pools, they artificially inflate rates and increase the likelihood of disallowance during incurred cost audits.
FAR 31.201‑6 explicitly requires contractors to identify and exclude unallowable costs from any billing, claim, or proposal applicable to a government contract. This is an ongoing process that starts with how costs are recorded in the GL.
Routine GL reviews help ensure:
- Unallowable costs are consistently charged to designated accounts
- Indirect pools reflect only allowable, allocable expenses
- Rate calculations are defensible and auditable
Audit Readiness Starts in the GL
During an audit, the general ledger is often the starting point. Auditors trace claimed costs back to source documentation, evaluate account structure, and assess whether unallowable costs have been properly segregated.
Contractors who review GL details proactively are better positioned to:
- Respond quickly to audit requests
- Reduce the volume of questioned costs
- Avoid last‑minute reclassifications and rate true‑ups
- Demonstrate a strong internal control environment
In contrast, contractors who rely on post‑hoc adjustments or manual schedules often face increased scrutiny and longer audit cycles.
Building a Sustainable Review Process: Best Practices
Effective GL reviews require discipline and consistency. Some best practices include:
- Monthly or quarterly review of high‑risk accounts tied to FAR 31.205 cost principles
- Standardized account descriptions and posting guidance
- Collaboration between accounting, contracts, and compliance teams
- Periodic training to reinforce allowable cost awareness
Over time, these practices strengthen both compliance and financial performance.
Key Takeaways
- FAR cost principles require contractors to segregate allowable and unallowable costs at the transaction level, not through after the fact adjustments.
- GL details are the primary source auditors rely on during incurred cost, billing, and system audits.
- Misclassified costs can result in disallowances, penalties, delayed payments, and reputational damage.
- Proactive GL reviews improve estimating accuracy, indirect rate development, forecast reliability, and overall audit outcomes.
- Recurring transaction level sampling supports accounting system adequacy and internal control assertions, particularly in high volume environments.
Final Thoughts
Reviewing general ledger details is a strategic compliance discipline that underpins FAR allowability, estimating credibility, and audit defensibility. Contractors that rely on high level balances, year-end cleanups, or manual schedules often discover compliance issues only after auditors do.
In contrast, organizations that embed transaction level review and recurring sampling into normal close and compliance processes demonstrate control, consistency, and accountability—exactly what DCAA, DCMA, and contracting officers expect to see.
In an environment of increased oversight, tighter margins, and greater emphasis on system adequacy, success belongs to contractors who understand a simple truth: FAR compliance doesn’t break down in policies or financial statements, it breaks down in the general ledger. Treating the GL as the backbone of compliant cost management strengthens audit readiness, protects profitability, and builds lasting trust with government stakeholders.
