Catch Overbilling Before You Pay
AI-powered invoice verification for construction and capital projects.
Upload any invoice, pay app, or AIA G702/G703 form for instant AI analysis. Our tool extracts billing data, identifies potential overbilling, and gives you the questions and leverage you need before approving payment. Free to use, no signup required.
Invoice Analyzer
Enter your work email to get started.
Invite-only access. Your documents are processed securely and never used to train AI models.
How does the analyzer work?
Upload your document
Drop any invoice, pay app, or AIA form (PDF format, up to 10MB)
Answer 3 quick questions
Tell us about your role, budget, and what you need from the analysis
Get actionable insights
Receive vendor questions, negotiation points, and budget context instantly
Why invoice verification matters for capital projects
On capital programs ranging from $100M to $2B+, invoice verification is one of the most critical cost control activities. Industry data shows that 3-7% of construction invoices contain errors—whether from honest mistakes or intentional overbilling. Over a multi-year project, these errors compound.
The challenge is that traditional invoice review is manual, time-consuming, and reactive. Project controls teams often spend 60% or more of their time gathering and reconciling data, leaving little time for the analysis that actually prevents cost overruns.
What makes folio different
folio was built by project controls professionals who have lived this problem. We've managed $1B+ in capital programs and experienced firsthand how traditional tools fail at scale. The Invoice Analyzer is the tool we wished we had.
- Instant analysis - Upload a PDF and get insights in minutes, not hours
- AI-powered detection - Trained on construction billing patterns to identify common issues
- Actionable insights - Specific questions and leverage points, not just data
- Built for capital projects - Understands the complexity of AIA forms, change orders, and retainage
Whether you're an owner, construction manager, or project controls lead, the Invoice Analyzer helps you approve payments with confidence.
Frequently asked questions
What is the folio Invoice Analyzer?
The folio Invoice Analyzer is a free AI-powered tool that reviews construction invoices, pay applications, and AIA G702/G703 forms. It extracts billing data, identifies potential overbilling issues, and generates specific questions and negotiation points to help you approve payments with confidence.
How does the Invoice Analyzer work?
Upload your invoice PDF and answer a few questions about your project context (your role, budget, goals). Our AI extracts all data from the document—line items, quantities, unit prices, totals—and analyzes it against construction billing patterns to identify anomalies, potential overbilling, and areas needing clarification.
What types of documents can I analyze?
The analyzer works with any construction billing document in PDF format, including: construction invoices, pay applications (pay apps), AIA G702 Application for Payment forms, AIA G703 Continuation Sheets, progress billing documents, change order invoices, and time & materials invoices.
What insights will I get from analyzing my invoice?
You receive three types of insights: (1) Vendor Questions - specific questions to ask your contractor about line items and billing discrepancies, (2) Negotiation Leverage - points you can use to negotiate payment terms or dispute questionable charges, and (3) Budget Context - how this invoice fits into your overall project budget and burn rate.
How accurate is the AI analysis?
Our AI is trained on construction billing patterns and common overbilling scenarios. It catches mathematical errors, identifies front-loaded billing, and flags anomalies that warrant investigation. While it provides valuable insights, we recommend using it as a starting point that augments—not replaces—professional judgment.
Can I analyze multiple invoices at once?
The free tool analyzes one invoice at a time. For teams needing to process multiple invoices or track patterns across pay periods, our enterprise solution provides batch processing, historical comparisons, and portfolio-level insights.
What file formats are supported?
Currently, we support PDF files up to 50MB. This covers virtually all construction invoices and pay applications. Support for additional formats like scanned images and spreadsheets is planned for future releases.
What is a pay application in construction?
A pay application (pay app) is a formal request from a contractor for payment on a construction project. It details work completed during the billing period, materials stored on site, retainage calculations, and the total amount due. AIA G702/G703 forms are the standard format for pay applications on commercial construction projects.
What is overbilling in construction?
Overbilling occurs when a contractor bills for more work than has actually been completed or at higher prices than contracted. This can happen through front-loaded billing (billing early work at high percentages), billing for materials not delivered, mathematical errors, or intentional fraud. Industry studies show 3-7% of construction invoices contain billing errors.
What is front-loaded billing?
Front-loaded billing is when contractors bill disproportionately high completion percentages on early work items, improving their cash position but transferring risk to the owner. For example, billing 80% complete on foundations when actual work is only 50% complete. This practice is common and often difficult to detect without systematic analysis.
How do I verify an invoice against a contract?
Compare each line item against your contract schedule of values, verify unit prices match contracted rates, ensure change orders are properly documented and approved, check that quantities match actual work completed, and verify retainage calculations. Our AI automates much of this comparison.
What is retainage in construction billing?
Retainage is a percentage (typically 5-10%) withheld from each payment until project completion to ensure the contractor completes all work satisfactorily. Proper retainage calculation is critical—errors can result in overpayment or disputes at project closeout.
What are AIA G702 and G703 forms?
AIA G702 (Application and Certificate for Payment) is the summary page showing total contract value, completed work, retainage, and amount due. AIA G703 (Continuation Sheet) provides line-by-line detail of the schedule of values, showing progress on each work item. Together, they are the standard billing format for commercial construction.
How much overbilling does the average project have?
Industry studies consistently show that 3-7% of construction invoices contain billing errors or overbilling. On a $100M capital project, that could mean $3-7M in potential overbilling over the project lifecycle. Our tool helps you catch these issues before they compound.
Is the Invoice Analyzer really free?
Yes. New users receive $50 in free credits (enough for approximately 12 invoice analyses). No credit card is required. You can upload invoices, answer questions about your project, and get instant analysis immediately.
How many invoices can I analyze for free?
Your $50 in free credits covers approximately 12 invoice analyses. Each analysis costs approximately $4 in credits, which covers the AI processing required for comprehensive document analysis.
What happens when I run out of free credits?
When your free credits are exhausted, you can request full access for continued use. Our team will review your request and work with you on appropriate access for your project needs.
Is there an enterprise or team plan?
Yes. For teams processing multiple invoices or managing portfolios of projects, we offer enterprise plans with batch processing, team collaboration, historical tracking, and dedicated support. Contact us to discuss your needs.
Is my invoice data secure?
Yes. Your documents are processed securely using enterprise-grade encryption. We do not store your invoice data permanently, and your financial information is never shared with third parties or used for AI training purposes.
Who can see my uploaded invoices?
Only you can see your uploaded invoices and analysis results. Documents are processed in isolated environments and are not accessible to other users or our team. We maintain strict data isolation protocols.
Do you use my data to train AI models?
No. Your invoice data is never used for AI training. We use commercially available AI models and do not build training datasets from customer documents. Your financial data remains private and confidential.
Is folio SOC 2 compliant?
We follow SOC 2 security principles in our architecture and operations. For enterprise customers with specific compliance requirements, we can provide detailed security documentation and discuss your requirements.
Who built this tool?
folio was built by project controls professionals with experience managing $1B+ in capital programs across life sciences, government, infrastructure, and transportation. We built the tool we wished we had when reviewing thousands of invoices on complex capital projects.
How is folio different from traditional invoice review software?
Traditional software organizes documents for manual review. folio actually analyzes your invoices using AI—extracting data, verifying calculations, identifying billing patterns, and generating specific questions. It is the difference between a filing cabinet and an analyst.
How is folio different from general AP automation?
General AP automation focuses on invoice capture and workflow routing. folio focuses on construction-specific analysis: understanding AIA forms, detecting front-loaded billing, verifying progress percentages, and catching the billing patterns unique to construction projects.
Can folio replace my project controls team?
No—and that is not the goal. folio augments your team by automating the time-consuming data extraction and initial analysis. Your team can then focus on investigating flagged issues, making decisions, and managing contractor relationships rather than manual verification.
Does folio integrate with accounting systems?
Our enterprise solution offers integrations with common accounting and ERP systems. The free tool is standalone—you upload invoices directly and receive analysis without system integration.
Can I export the analysis results?
Yes. Analysis results can be printed or saved for your records. Enterprise users have additional export options including PDF reports and data exports for integration with other systems.
Does folio work with Procore, Sage, or other construction software?
The free tool is standalone. Enterprise integrations with major construction platforms are available. Contact us to discuss integration requirements for your technology stack.
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