Automate Expense Management for Defense Contractors

How do I automate expense management for defense contractors?

Automate expense management for defense contractors by digitizing receipts at point of spend, mapping expenses to DCAA cost pools and contract cost codes, configuring approval workflows by contract type, and integrating with your ERP. Vergo automates coding by inference and enforces allowability rules in real time.

July 29, 2026

Key takeaways

Defense contractor expense automation requires mapping every expense type to DCAA cost pools and direct contract charges before building any workflows.
Receipt capture must happen at the point of spend with automatic vendor and amount extraction to meet DCAA audit trail requirements.
Approval workflows should route by contract type and dollar threshold, with tighter scrutiny for T&M contracts than FFP.
Integration with construction ERPs and timekeeping systems enables nightly expense syncs and labor-expense matching before month-end close.
Monthly allowability audits flag unallowable costs under FAR 31.205 before they reach the general ledger.
Vergo automates coding by inference from your own accounting structure and history—no rule library to build, no keyword lists to maintain, and new vendors are coded on first sight.

Map expense categories to DCAA cost pools and job cost codes

Defense contractors must assign every expense type to the correct indirect cost pool—fringe, overhead, or G&A—or to a direct contract charge before automating any workflows. This mapping drives downstream coding rules and determines whether a cost is allowable under FAR 31.205. Vergo automates this by proposing the coding by inference from your own accounting structure and history, so new vendors are coded on first sight without building rule libraries. Field teams and project managers submit diverse expense types: fuel for equipment, materials tied to specific WBS elements, travel tied to prevailing wage labor categories, and supplies that may serve multiple IDIQ task orders simultaneously. Each type requires a different cost objective and audit trail. Controllers who skip this step face manual rework at month-end when expenses land in the wrong pool or lack the contract traceability DCAA expects during incurred-cost reviews.

Digitize receipt capture at the point of spend

Paper receipts are the leading audit finding in DCAA incurred-cost reviews, so mobile receipt scanning for field supervisors and traveling engineers is essential. OCR should extract vendor name, amount, and transaction date automatically the moment a receipt is photographed on-site. This eliminates the lag between spend and documentation that delays incurred-cost submissions and creates questioned costs. A superintendent purchasing materials at a job site should capture the receipt before leaving the vendor location, ensuring the image, timestamp, and GPS data are preserved. Vergo enables employees to handle everything by text message—no app to download, no portal login—and chases missing receipts itself instead of waiting for manual collection. Manual receipt collection after the fact—through spreadsheets or email forwarding—introduces gaps that auditors flag as inadequate internal controls, especially when receipts are illegible or missing entirely.

Configure approval workflows by contract type and threshold

Time-and-materials contracts require tighter per-diem and travel scrutiny than firm-fixed-price contracts because every dollar flows through to the customer invoice. Routing expenses above $2,500 to both the project manager and contracts administrator ensures that large purchases receive proper cost justification and allowability review before they hit the general ledger. Below that threshold, the system can auto-approve transactions if coding rules and allowability checks pass, reducing bottlenecks for routine field purchases. Vergo's approval workflows are optional and fit how you already control spend: route by GL account, by amount, or by project, or skip approval flows entirely and let policy flags catch only what breaks a rule. Role-based workflows should also account for org structure: a traveling engineer's hotel receipt on a cost-plus contract might need only PM approval, while the same expense on a T&M contract requires both PM and accounting sign-off to verify labor category alignment and prevailing wage compliance.

A practical example: multi-contract allocation

A field purchase at Home Depot may serve two IDIQ task orders simultaneously—lumber for formwork on Contract A and safety equipment shared across Contract A and Contract B. Generic expense tools cannot split a single receipt across multiple job cost codes and contracts, forcing controllers to manually allocate the transaction in the ERP after the fact. Defense construction expense automation must handle this natively: the system prompts the cardholder to specify the split percentages at the point of capture, tags each portion to the correct contract CLIN and WBS element, and syncs the allocation to Deltek Costpoint or Viewpoint without manual GL entry. This ensures every dollar traces to a cost objective and appears correctly in the contractor's incurred-cost submission.

Integrate with your ERP and timekeeping system

Approved expenses should push to Sage 300 CRE, Viewpoint, or Deltek Costpoint nightly so controllers can match labor-related expenses against timecards and flag discrepancies before month-end close. Vergo integrates with every ERP and accounting software, and transactions are ready to code the moment they happen—once they clear, they sync into your accounting or ERP software. A mileage reimbursement submitted by a field engineer should automatically compare against that employee's timecard entries for the same date range; if the employee logged eight hours on Contract C but claimed mileage for travel to Contract D, the system flags the mismatch for review. This integration also eliminates duplicate data entry: expenses coded at the point of capture flow directly into job cost and general ledger modules with their contract, cost code, and cost type already attached, preserving the audit trail DCAA expects.

Run monthly allowability audits automatically

FAR 31.205 defines 52 cost categories with specific allowability rules, and defense contractors must flag unallowable costs—alcohol, entertainment, first-class airfare, lobbying—before they reach the general ledger. Manual spreadsheet reviews delay this process until after expenses have posted, requiring journal entries to reclassify costs and increasing the risk of questioned costs during audit. Automated allowability screening applies FAR rules at the point of submission: a dinner receipt with alcohol is split automatically, with the alcohol portion coded to an unallowable account. Vergo enforces allowability rules in real time, and every coding decision shows why it was chosen so a reviewer confirms in seconds instead of re-coding by hand. Monthly reports should generate ICE schedule-ready output without manual reconciliation, showing every unallowable transaction, its policy citation, and its exclusion from the indirect cost base.

How Vergo handles this

Vergo automates expense coding for defense contractors through inference from your own accounting structure and history—no rule library to build, no keyword lists to maintain, and new vendors are coded on first sight. Every coding decision shows why it was chosen, so a reviewer confirms in seconds instead of re-coding by hand. Employees handle everything by text message—no app to download, no portal login—and Vergo chases missing receipts itself. Transactions are ready to code the moment they happen, and once they clear, they sync into your accounting or ERP software. Approval workflows are optional and fit how you already control spend: route by GL account, by amount, or by project, or skip approval flows entirely and let policy flags catch only what breaks a rule. Card spend, employee reimbursements, and AP invoices run through one coding model—same coding, same review, one reconciliation. Connecting your existing cards involves no card applications, no re-issuing, and no banking change.

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.