Construction Accounts Payable Software | AP Automation for Contractors | Nexus APSkip to content
AP automation built for construction

Stop losing time to lien waivers and job costing

Nexus automates subcontractor invoice processing, tracks lien waivers automatically, and codes every invoice to the right job — so your team can focus on building, not paperwork. Works with Yardi, and is a smarter alternative to Bill.com and Stampli.

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75%
Faster sub processing
0
Lien waiver gaps
95%
Job coding accuracy
3x
Faster project close
app.nexusap.com/dashboard

Match Rate

92.8%

+2.4% vs last month

Open Lien Waivers

7

Pending collection

Monthly Sub AP

$1.8M

Processed this month

Active Projects

12

Across 3 regions

Invoices by Job

Riverside Tower Phase 2$482K38 inv
Metro Station Renovation$316K24 inv
Harbor Bridge Repair$274K19 inv
Oakwood Residential$198K15 inv

Lien Waiver Status

Apex ElectricalReceived
Summit PlumbingPending
CoreSteel FabricatorsReceived
Pacific ConcreteOverdue

Connects with your ERP and accounting systems

Sage 300ProcoreYardi (Coming Soon)QuickBooksFoundation Software

Construction AP is different

Generic AP tools weren't built for lien waivers, retainage, and job costing.

Lien waivers hold up every payment

Your team manually tracks conditional and unconditional waivers across dozens of subcontractors. One missed waiver means payment delays or legal exposure.

Retainage calculations are error-prone

Tracking 5-10% retainage per subcontract across multiple projects means spreadsheet complexity that leads to overpayments and disputes.

Job costing eats your AP team’s time

Every invoice needs the right job, phase, and cost code. Manual coding is slow, error-prone, and impossible to audit at scale.

AIA billing reconciliation is manual

G702/G703 documents arrive in different formats. Reconciling applications for payment against contracts is a time sink every billing cycle.

Live in 30 minutes — built for your workflow

No implementation project. No consultants. Your team sets it up.

01

Connect your construction ERP

Integrate with Sage, Procore, Yardi, QuickBooks, or your existing construction accounting system.

02

Subcontractor invoices flow in

Email forwarding, sub portal upload, or API — invoices are captured and data is extracted automatically.

03

AI matches & codes

Invoices auto-match to POs and contracts. Job codes, phase codes, and cost codes are applied by AI.

04

Waivers tracked, payments released

Lien waivers are verified, retainage is calculated, and approved payments flow back to your ERP.

Built for how construction companies actually work

Lien waivers, retainage, job costing, and AIA billing — handled automatically.

Lien Waiver Management

Automatically track conditional and unconditional waivers per subcontractor. Payments are held until all required waivers are received — zero lien risk.

AI Job Cost Coding

AI learns your job/phase/cost code patterns from historical data. New invoices are auto-coded automatically, saving hours of manual entry.

Retainage Tracking

Per-subcontract retainage calculations update automatically as invoices are processed. Track held amounts, release schedules, and final payments in one view.

Multi-Project AP Dashboard

See invoice status, cash commitments, and exception rates across all active projects. Drill into any job for line-level detail.

Nexus vs. generic AP tools for construction

Purpose-built for lien waivers, retainage, and job costing.

CapabilityNexusGeneric AP Tools
Lien waiver trackingAutomated hold/releaseManual spreadsheets
Job cost codingAI-powered, learns patternsManual entry per invoice
AIA billing supportG702/G703 auto-reconciliationNot supported
Retainage trackingPer-subcontract, automatedSeparate spreadsheet
Subcontractor portalSelf-service invoice submissionEmail-based
Free calculator

What would faster construction AP processing save you?

No email required. Instant results.

See the difference on your next project

Explore with sample data · No account needed · 2 minutes