How do I automate expense management for defense contractors?

March 27, 2026

Defense contractors automate expense management by enforcing DCAA-compliant receipt capture, mapping expenses to CLINs and indirect cost pools, and routing approvals by contract type—FAR, T&M, or fixed-price. Vergo's platform handles this with automated CLIN-to-cost-code mapping, mobile receipt capture, and approval workflows built around contract structure.

The Step-by-Step Approach

Map expense categories to DCAA cost pools and job cost codes. Identify every expense type your field teams and project managers submit. Assign each to the correct indirect cost pool (fringe, overhead, G&A) or direct contract charge. This mapping drives every automation rule downstream.
Digitize receipt capture at the point of spend. Equip field supervisors and traveling engineers with mobile receipt scanning. OCR should extract vendor, amount, and date automatically. Paper receipts are the #1 audit finding in DCAA incurred-cost reviews.
Build auto-coding rules tied to contract structure. Set rules so fuel purchases on a specific project auto-code to that contract's CLIN. Material purchases at a job site auto-tag to the correct WBS element. This eliminates manual GL entry by controllers.
Configure approval workflows by contract type and threshold. T&M contracts need tighter per-diem and travel scrutiny than FFP. Route expenses above $2,500 to the project manager and contracts administrator. Below that, let the system auto-approve if coding rules pass.
Integrate with your ERP and timekeeping system. Push approved expenses to Sage 300 CRE, Viewpoint, or Deltek Costpoint nightly. Match labor-related expenses against timecards to flag discrepancies before month-end close.
Run monthly allowability audits automatically. Flag unallowable costs—alcohol, entertainment, first-class travel—before they hit the general ledger. Generate ICE schedule-ready reports without manual spreadsheet work.

What Makes This Different in Construction

Generic expense tools like Expensify or Brex don't understand contract accounting. They can't distinguish between allowable and unallowable costs under FAR 31.205. They don't allocate a single Home Depot receipt across three job cost codes.

Defense construction adds another layer: DCAA audit readiness. Every expense must trace to a contract, a cost pool, and a justification. Manual processing creates lag that delays incurred-cost submissions and risks questioned costs.

Multi-contract allocation: One field purchase may serve two IDIQ task orders simultaneously
Allowability screening: FAR 31.205 has 52 cost categories with specific rules
Prevailing wage alignment: Per-diem and travel must match contract labor categories
Audit trail depth: DCAA expects timestamp, approver, receipt image, and cost objective for every transaction

Tools That Help

Several platforms offer expense automation, but defense contractors running construction projects need tools that handle job-cost allocation, DCAA compliance, and field-team workflows natively—not as bolt-on configurations.

Vergo is purpose-built for construction finance teams. It auto-codes field expenses to job cost codes, enforces allowability rules before submission, and syncs approved transactions to your ERP. For example, a Vergo workflow lets a superintendent photograph a materials receipt on-site, auto-tags it to the correct contract and cost code using project GPS and vendor rules, routes it for approval, and posts it to your general ledger—all before the controller opens a spreadsheet.

How Vergo Helps

Vergo is a card-agnostic expense management platform built for construction. Connect any corporate or project credit card and get full visibility and control over field spending.

Job-cost coding at the point of capture — field teams assign job number, cost code, and cost type from their mobile device before the receipt leaves the job site.
Per-job spend controls — set card limits by project, cost code, or cardholder so spending stays within approved budgets.
Mobile receipt capture — superintendents and PMs photograph receipts on-site with automatic data extraction.
Role-based approval workflows — route expenses through project managers, job-level approvers, and controllers based on your org structure.
Vergo integrates natively with major construction ERPs, syncing coded expenses directly into job cost and general ledger without manual re-entry.

Frequently Asked Questions

What makes expense management different for defense contractors vs. commercial construction?

Defense contractors must comply with FAR 31.205 allowability rules and DCAA audit requirements. Every expense needs a traceable cost objective—either a direct contract charge or an approved indirect cost pool. Commercial contractors rarely face this level of cost-type scrutiny or government audit exposure on routine field expenses.

How does automated expense management affect month-end close for defense contractors?

Automation eliminates the manual coding backlog that delays close by three to five days. Expenses post to the correct job cost codes and indirect pools in real time. Controllers spend less time reclassifying entries and more time reviewing incurred-cost schedules, typically reducing close timelines by 30-40% within the first quarter.

Can automated expense tools integrate with Deltek Costpoint or Sage 300 CRE?

Yes. Construction-specific expense platforms like Vergo offer direct integrations with Deltek Costpoint, Sage 300 CRE, and Viewpoint. Approved expenses sync nightly with correct job cost codes, cost pools, and contract line items so controllers avoid duplicate manual entry and reduce ERP reconciliation errors at month-end.

How do I handle split-coded expenses across multiple defense contracts?

Use automation rules that split a single receipt across multiple cost objectives based on predefined allocation percentages or unit quantities. For example, a bulk lumber purchase serving two IDIQ task orders can auto-allocate 60/40 by board footage, with each portion coded to the correct contract CLIN and job cost code.

What expenses are unallowable under DCAA guidelines that automation can flag?

FAR 31.205 lists categories including alcohol, entertainment, first-class airfare, lobbying, and certain advertising costs. Automated systems flag these at submission using vendor category codes and expense type rules. This prevents unallowable costs from reaching the general ledger and triggering questioned costs during DCAA incurred-cost audits.