Construction & subcontractors
Flag duplicate and over-limit subcontractor invoices before approval.
Long projects, staged billing, and changing purchase orders make duplicate or over-limit invoices difficult to spot. Invogi's construction invoice fraud detection compares invoice history automatically and, when matching PO data is provided, applies configurable tolerance checks before payment.
No card required · results in minutes · up to 500 invoice records free
What we catch
Invoice controls for staged billing and shifting POs
Subcontractor duplicate submissions
A subcontractor invoice resubmitted with a slightly different number or amount.
PO overage
Price, quantity, or total variance against the purchase order for that phase of work — see PO tolerance checks.
Bank-detail changes mid-project
A subcontractor's payment details changed partway through a long engagement — flagged before payment.
Why construction is exposed
Long projects, staged payments, one PO
A multi-month project can generate many staged invoices against the same purchase order. Invogi compares each invoice with invoice history and, where a matching PO is available, evaluates configured price, quantity, and total tolerances.
Beta construction checks
Compare subcontractor invoices with what you certified and agreed
These review-only checks follow Invogi's own conventions and published HMRC guidance, and aren't yet proven on customer data. Preview them on your invoices before you activate them. They aren't a legal or tax result.
Project and subcontract
Assign an invoice to its project and subcontract, then review a closed subcontract, a different supplier or currency, or a total above the agreed sum.
Payment certificates
Compare invoices, excluding VAT, with the sum a certificate or payment notice says is due. A review in Invogi doesn't replace a notice or change a final date for payment.
UK CIS and VAT prompts
Preview prompts from the CIS dates and VAT treatment you record. Invogi doesn't contact HMRC, calculate deductions, or decide the VAT treatment.
FAQ
Common questions
Which construction invoice risks can Invogi flag?
Invogi can flag exact and near-duplicate submissions, unusual supplier amounts or frequency, changed bank details, and purchase-order variance when the relevant PO data is provided.
Can Invogi check subcontractor invoices against a PO?
Yes. When purchase-order data is provided, configurable tolerance checks can compare price, quantity, and total variance against the matched PO.
Does Invogi replace our construction accounting software?
No. Invogi is a pre-payment control layer that sits in front of your existing ERP or accounting system — it doesn't replace it or require a workflow migration.
See other industries
Invogi for other verticals
Property management
Duplicate risk across multi-property portfolios.
Logistics
High-volume, multi-currency carrier billing.
Hospitality
Generic AP controls with hospitality setup guidance.
All solutions
See every industry Invogi supports.
Ready to see your exposure?
Run a free AP recovery audit on your subcontractor invoices.
No integration required. Upload a CSV or XLSX export of your AP transactions and see duplicate and PO-overage exposure, with evidence, in minutes.