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What AP automation tools integrate with Unanet for engineering firms?

What AP automation tools integrate with Unanet for engineering firms?

Vergo integrates with Unanet to automate AP for engineering firms, coding invoices by inference from your project structure and history. Generic AP tools may connect via API or third-party middleware, but few support Unanet's project-phase-task hierarchy natively.

July 29, 2026

Key takeaways

  • Vergo codes AP invoices to Unanet using inference from your project structure and history, with no rule library to build or keyword lists to maintain.
  • Effective tools must code invoices to Unanet's project, phase, task, and cost type hierarchy with line-item precision for multi-phase contracts.
  • Role-based approval routing by project manager, contract threshold, or principal authority matches how engineering firms actually control spend.
  • Real-time budget visibility allows project managers to see committed costs from approved and pending invoices without waiting for month-end close.
  • Audit-ready documentation with timestamped approval trails is essential for government contract compliance and DCAA readiness.

Why engineering firms struggle with AP and Unanet

Unanet is purpose-built for AEC project accounting, but its native AP functionality leaves gaps that create real pain for controllers and AP teams. Invoice intake is largely manual, approvals happen outside the system via email, and coding decisions fall to AP clerks who lack project context. The result: delayed closings, miscoded costs, and audit exposure. For engineering firms running 50 to 500 active projects, these gaps compound fast. Project managers don't see committed costs in real time, controllers spend days chasing approvals before month-end, and when an invoice is coded to the wrong contract or labor category, the error propagates into billing and directly affects revenue recognition.

What to look for in a Unanet-compatible AP automation tool

Not every AP automation platform is built for project-based accounting. Generic tools designed for retail or manufacturing don't understand the AEC cost structure. Look for native Unanet integration where data syncs bidirectionally — vendor master, project codes, contract values, and posted invoices — without manual exports or middleware. The tool must code invoices to Unanet's project hierarchy: project, phase, task, and cost type, with line-item coding required for multi-phase contracts. Three-way matching against Unanet purchase orders and subcontracts prevents overpayment and flags discrepancies before approval. Role-based approval routing should reflect engineering firm structures: project manager approval under a dollar threshold, principal or controller approval above it, with automatic escalation.

Key capabilities for project-based AP automation

Audit-ready documentation is critical — every invoice should carry a timestamped log of who received, coded, reviewed, and approved it, essential for government contract compliance and DCAA audit readiness. Mobile capture for distributed teams allows field engineers and remote project managers to submit and approve invoices from mobile devices, not just from the office. Real-time budget visibility means approved and pending invoices post to Unanet project budgets immediately, giving PMs and controllers accurate committed cost data without waiting for month-end. Contract and PO matching provides three-way validation that catches discrepancies before they become payment errors or compliance issues.

Specific problems AP automation must solve

Engineering firms face manual invoice entry into Unanet from PDFs, email, or paper, which creates bottlenecks and data entry errors. They lack structured approval workflows tied to project or contract thresholds, forcing approvals through email chains that leave no audit trail. Late cost visibility prevents project managers from seeing pending invoices against project budgets until after they've cleared. Duplicate payment risk increases from unmatched or re-submitted invoices when there's no central tracking system. Audit trail gaps emerge when approvals happen over email or verbal sign-off, creating compliance exposure especially for government contracts. Miscoding to the wrong project, phase, or cost type due to manual entry errors propagates downstream into billing and revenue recognition.

How Vergo handles this

Vergo integrates with Unanet and every ERP and accounting software to automate expense management for engineering firms. The platform codes AP invoices, card spend, and employee reimbursements through one coding model using 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 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 with no waiting for clearing, and once they clear, they sync into Unanet automatically. Employees handle everything by text message with no app to download or portal login, and Vergo chases missing receipts itself instead of waiting for a report.

Related questions

Frequently Asked Questions

Does Unanet have built-in AP automation for engineering firms?

Unanet includes basic invoice and payment tracking within its project accounting module, but lacks structured AP automation features like OCR capture, multi-step approval workflows, and automated PO matching. Most engineering firms supplement Unanet with a dedicated AP automation tool to handle invoice intake, coding, and approval routing before data posts to Unanet.

What is three-way matching and why does it matter for AEC firms?

Three-way matching compares an invoice against the original purchase order and the receiving document to confirm the quantity, price, and vendor terms align before payment is approved. For AEC firms, this prevents overpayment on subcontracts and material orders. It also creates a documented audit trail that supports DCAA compliance on government contracts and reduces dispute risk.

How should approval workflows be structured for engineering firm invoice approvals?

Best practice for engineering firms is threshold-based routing: project manager approval for invoices under a defined dollar amount, controller or principal approval above it, and automatic escalation if approvals are not completed within a set window. Approval authority should also vary by contract type — cost-plus government contracts typically require tighter controls than fixed-fee private work.

Can Vergo handle DCAA-compliant AP workflows for government engineering contracts?

Yes. Vergo maintains a complete, timestamped audit trail for every invoice — capturing who submitted, coded, reviewed, and approved each document. This supports DCAA audit readiness by providing documented evidence of invoice review and approval. Approval workflows can be configured per contract type, ensuring government invoices follow stricter controls than commercial project invoices.

How does Vergo integrate with Unanet specifically?

Vergo's Unanet integration syncs vendor master data, project codes, cost types, and contract values from Unanet into Vergo for invoice coding. Once an invoice is approved in Vergo, it posts directly to the corresponding Unanet project record without manual export or re-entry. This eliminates duplicate data entry and ensures project budget data stays current in real time.

What AP automation features matter most for multi-project engineering firms?

For firms managing 50 or more active projects, the critical features are project-level cost coding at the line-item level, real-time budget commitment tracking, and approval routing that maps to project hierarchy — not just company org charts. Mobile approval capability is also essential when project managers are on-site or traveling and need to approve invoices without VPN access.