Key takeaways
- Engineering firms require reimbursements to be tied to a project, phase and task before approval so every dollar can be billed to the client or charged to the correct project budget.
- Direct reimbursables are passed through to clients at cost or with a markup, while indirect costs support project work but are not billed — contracts determine which category applies.
- Without a structured process, expenses accumulate in email and spreadsheets, missing billing cutoffs and distorting project cost reports.
- Modern engineering firms capture project coding at the point of submission and route approvals to the project manager so expenses are documented and ready for billing.
- Vergo runs card spend, employee reimbursements, and AP invoices through one coding model with coding by inference from your own accounting structure, so new vendors are coded on first sight without a rule library to build.
Where should you go next?
- See how Vergo works for engineering firms
- Learn more about Vergo Employee Reimbursements
- Learn more about Vergo Expense Management
- Learn more about Vergo AP Invoice Automation
What Are Reimbursements in Engineering Firms?
Reimbursements in engineering firms cover any out-of-pocket expense an employee incurs while performing project work — mileage, travel, lodging, equipment rentals, printing, permit fees and field supplies are the most common categories. Once submitted, each expense must be reviewed, approved and coded before it can be recorded in the general ledger. Unlike a retail or tech company where expenses flow to a department budget, engineering firms operate project by project in systems like Deltek Vantagepoint, Ajera or BQE Core. Every reimbursable dollar must be tied to a project, a phase and a task — because that data determines whether the cost is billable to the client, recoverable under a cost-plus contract, or absorbed as overhead. Misclassifying a reimbursable site-visit expense as overhead can quietly erode project margin without triggering any accounting alert. Many engineering firms also distinguish between direct reimbursables (costs passed through to the client at cost or with a markup) and indirect costs (costs that support project work but are not billed). Contracts set the rules for which category applies, and the accounting process must apply those rules at the point of expense entry — not after the fact.
Why This Matters for Engineering Firm Controllers
For a controller at an engineering firm, the reimbursement process sits at the intersection of payroll timing, accounts payable, project billing and compliance. When the process breaks down, the consequences are concrete and costly: Unbilled reimbursables occur when expenses approved too late miss the billing cutoff, leaving recoverable costs permanently off the invoice. Miscoded expenses happen when a lodging charge coded to the wrong project distorts cost reports on two projects at once. Audit exposure emerges because government and public-sector contracts often require documentation of every reimbursable — missing receipts create compliance risk. Cash flow strain results when employees who wait weeks for reimbursements submit expenses less often, creating submission spikes that disrupt month-end close. For a project manager, the pain is visibility: if site-visit expenses aren't coded and entered in near real time, the project cost report always runs behind actual spend. A project that looks 10% under budget may already be over if three engineers submitted their travel receipts late.
A Practical Example
A geotechnical engineer submits $1,200 in lodging and mileage by email two days after the monthly billing run. The project accountant doesn't see it until the following cycle. The client is invoiced 45 days late for costs that were incurred on time. Cash collected shrinks, and the project's billed-to-date figure is understated for a full month. With Vergo, the engineer texts each receipt as it happens, Vergo proposes the project, phase and task and the reimbursable expense account, and the claim routes to the PM for approval before syncing to the accounting system. When billing runs, the expense is already coded, documented and ready to include on the invoice — no manual intervention required. In an environmental engineering firm working under a cost-plus-fixed-fee contract, equipment rental receipts must carry the vendor name, date and project phase to qualify for reimbursement from the client. A structured reimbursement process ensures every eligible cost has the documentation needed to survive a contract audit.
How Modern Engineering Firms Handle This
Leading engineering firms have replaced email-and-spreadsheet reimbursement workflows with platforms that capture project coding at the point of submission, route approvals to the project manager, and feed approved expenses directly into the accounting system without manual re-entry. When there is no defined process — no standard submission, no approval workflow, no coding at submission — expenses accumulate in email inboxes and spreadsheets until someone reconciles them by hand before billing. This is the most common failure mode in mid-size engineering firms. Structured processes capture receipts immediately, confirm the project allocation before approval, and ensure that every reimbursable expense is documented and billable as soon as it clears.
How Vergo handles this
Vergo runs card spend, employee reimbursements, and AP invoices through one coding model — same coding, same review, one reconciliation. Employees handle everything by text message, with no app to download and no portal login, and Vergo chases missing receipts itself. Vergo proposes the coding by inference from your own accounting structure and history, so new vendors are coded on first sight without a rule library to build. Every coding shows why it was chosen, so a reviewer confirms in seconds instead of re-coding by hand. 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. Transactions are ready to code the moment they happen, and once they clear, they sync into your ERP software. Approved reimbursement claims sync to payroll or AP, so payment stays on the rails you already use.
Related questions
Frequently Asked Questions
How should engineering firms code reimbursable expenses?
Most engineering firms code reimbursables to the project, phase and task plus a reimbursable expense account, and code non-billable costs to indirect overhead accounts. The specific structure depends on the firm's chart of accounts, but the key principle is that every reimbursable should be coded before approval — not during month-end reconciliation.
How do engineering firms separate billable from non-billable reimbursements?
The contract governs which expenses are billable. Controllers typically set up the accounting system so that certain expense accounts are treated as reimbursable to the client by default. Expenses coded to those accounts flow into project billing. Non-billable categories, like internal training travel, are coded to overhead accounts and excluded from client invoices.
How long should the reimbursement approval process take in an engineering firm?
Best practice is a turnaround of a few business days from submission to approval. Longer cycles discourage timely submission, create month-end backlogs and increase the risk of missing billing cutoffs. Firms with approval cycles of two weeks or more typically have no defined routing — approvals sit in a PM's inbox with no escalation.
What documentation is required for reimbursable expenses on government engineering contracts?
Federal and state contracts typically require original receipts, a business purpose statement, the project or contract number and employee certification. FAR-based contracts may also require pre-approval for expenses above a defined threshold. Missing documentation is one of the most common findings in cost audits on public-sector engineering projects.
How do reimbursements affect project cost reports for engineering firms?
Unposted reimbursements understate actual costs on the project cost report, making projects appear more profitable than they are. Controllers should set a submission deadline ahead of month-end close so all site-visit and travel expenses are coded and posted before cost reports are reviewed and billing is generated.
Can engineering firm reimbursements sync directly to the ERP?
Yes. Vergo integrates with the systems engineering firms run, including Deltek Ajera, BQE Core and QuickBooks. Approved reimbursements post to the project ledger with project, phase and task attached, with no duplicate data entry by the accounting team, and payment runs through your existing payroll or AP.
