Government contracts under FAR and CAS legally prohibit cost commingling, requiring aerospace companies to assign every expense to a specific program or contract at the transaction level. Platforms like Vergo address this by enforcing cost code and contract ID assignment at the point of invoice entry, before costs reach the GL.
Aerospace companies operating on government contracts work under a uniquely demanding cost accounting environment. The Federal Acquisition Regulation (FAR) and Cost Accounting Standards (CAS) require that every direct cost—labor, materials, subcontractor charges, overhead—be assigned to a specific contract, program, or cost objective. This is not optional. It is a contractual obligation embedded in virtually every Department of Defense and civilian agency contract.
The challenge is structural. A single aerospace manufacturer may run dozens of concurrent programs: a fixed-price development contract, a cost-plus-award-fee production run, a time-and-materials maintenance agreement, and several firm-fixed-price spares orders—all simultaneously. Each has its own cost pool, billing structure, and audit exposure. When invoices arrive from suppliers, the AP team must correctly identify which contract or program each line item belongs to before the cost can be recorded or billed.
Manual AP workflows make this nearly impossible to do accurately at scale. An invoice from a machined-parts vendor may cover components destined for three different programs. A facilities invoice needs to be split across multiple contracts by square footage or headcount allocation. Without a systematic process to enforce this coding at the point of entry, costs accumulate in unallocated holding accounts—creating a backlog that compounds every period close.
Root causes of cost allocation failures in aerospace AP:
Cost allocation failures in aerospace are not bookkeeping inconveniences. They carry financial, legal, and operational consequences:
The modern approach to program and contract cost allocation centers on enforcing coding discipline at the moment an invoice is received—not after it has been posted. Finance teams that have solved this problem structurally use AP automation platforms that require a valid contract or program code before an invoice can be approved or posted. This eliminates the unallocated holding account problem by making allocation a prerequisite for workflow progression, not an afterthought.
The second layer is line-level splitting. Rather than coding an entire invoice to a single contract, controllers need the ability to split individual invoice lines across multiple programs with different cost types—direct labor support, materials, ODC—and have those splits flow into the correct cost pools in the ERP automatically.
Before Vergo: An AP clerk receives a $180,000 vendor invoice covering parts for three programs. She codes the entire amount to the largest program, flags it for later correction, and moves on. Correction never happens before close. DCAA flags the allocation in the next audit.
After Vergo: The same invoice is split at the line level during the approval workflow. Each line is tagged to the correct contract number and cost type. The split posts automatically to all three program cost pools in the ERP. No reclassification. No audit finding.
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The Federal Acquisition Regulation (FAR Part 31) and Cost Accounting Standards (CAS 48 CFR 9904) are the primary frameworks. They require that all direct costs be allocated to a single final cost objective—the specific contract—and that indirect costs be allocated through disclosed, consistent methodologies. Non-compliance risks disallowed costs and contract termination.
Direct costs—materials, direct labor, subcontracts—must be allocated exclusively to the specific contract that benefits from them. Indirect costs—facilities, G&A, overhead—are allocated across multiple contracts using disclosed allocation bases such as direct labor hours, direct costs, or headcount. CAS requires these methodologies to be applied consistently and disclosed in a Cost Accounting Disclosure Statement.
DCAA auditors examine whether costs charged to a contract are allowable, allocable, and reasonable under FAR 31.201. Costs that cannot be traced to a specific contract with adequate supporting documentation are disallowed and must be credited back to the government. Repeated allocation failures can trigger broader business system audits and withheld payments under DFARS 252.242-7005.
Most vendor invoices arrive without contract or program reference numbers. AP staff must manually cross-reference purchase orders, job cost reports, and program schedules to determine the correct cost objective. When invoices span multiple programs—common with shared-service vendors and facilities charges—line-level splitting requires judgment calls that clerical AP staff are not equipped to make without better tooling.
Yes. Platforms like Vergo require a valid contract or program code at the line level as a condition of the approval workflow—invoices cannot advance to payment without complete cost allocation. This eliminates unallocated holding accounts and ensures every cost posts to the correct program in the ERP automatically, reducing audit risk and accelerating period close.
EAC calculations use actual cost-to-date by program as the baseline for projecting final contract cost. When AP costs are misallocated—posted to the wrong program or sitting in an unallocated account—the cost-to-date figure is wrong. This corrupts the EAC, causes program managers to misread performance trends, and produces inaccurate Earned Value Management System (EVMS) reporting.