An AI contract to invoice validation agent reads the contract for commercial terms such as rate cards, committed fees, price escalators, billing frequency and payment terms, and keeps them as a set of checkable rules.
Captures billed items, rates and period.
Locates the governing agreement and its pricing terms.
Checks rates, quantities, dates and fees against the contract.
Lists charges that the contract does not support.
Contract or budget owner accepts or disputes each variance.
Validation result is stored with the invoice.
It reads each invoice and compares charges to those rules, noting any line that is above the agreed rate, outside the term, or not covered by the contract at all.
It prepares a short finding for AP or the contract owner, citing the clause and the invoice line, and leaves the decision to pay, dispute or amend to people.
Contracts hold the agreed terms, but invoice approvers rarely have the contract open, so billing differences are noticed late or not at all.
Rates and caps sit in schedules and order forms.
They cannot tell whether a charge is allowed.
Uplifts and added fees pass without comparison to the clause.
Amendments and renewals alter prices after the original signing.
Service credits and discounts are owed only if someone checks.
Links the invoice to its contract or order form using vendor, references and dates.
Pulls rates, fees, term dates, escalators, minimums, caps and payment terms into structured rules.
Extracts charges, quantities, periods and totals from the invoice.
Tests each line against the rules and records the clause that supports or contradicts it.
Writes an exception summary for the right person, with clause text and invoice lines side by side.
Bring a small sample and watch Flo work through it.
| Aspect | By hand | With the agent |
|---|---|---|
| Reference | AP rarely opens the contract, so it relies on the PO or habit. | Each invoice is compared with the contract terms it falls under. |
| Rate checks | Rates are checked from memory or old emails. | Billed rates are set beside the agreed rate card. |
| Renewals | Auto-renewed charges are paid unnoticed. | Charges outside the term or after expiry are flagged. |
| Extras | Fees not in the agreement pass through. | Charges with no contract basis are listed. |
| Evidence | Disputes lack a clause to cite. | Each variance cites the clause or schedule used. |
| If | Then | Who decides |
|---|---|---|
| Billed rate differs from the contract rate | Flags the line with the contract reference | Contract owner |
| Invoice period falls outside the contract term | Flags possible post-expiry billing | Contract owner and AP lead |
| Charge type does not appear in the agreement | Lists it as unsupported | Budget owner |
| Invoice cites a price uplift | Checks for an uplift clause and shows it or its absence | Contract owner |
| No contract can be matched to the vendor | Marks the invoice as unvalidated | Procurement |
| Volume billed exceeds the contracted commitment | Notes the overage and the clause on it | Budget owner |
The agent reads the latest amendment set and states which version it used. The contract owner confirms the set is complete.
The agent applies the tier schedule to the billed usage and shows the working. The owner checks the usage figure.
The agent flags the mismatch as a contract record problem, not a billing one. The owner updates the agreement.
The agent marks low confidence on affected fields. A person checks the clauses directly.
Talk it through with the team. We will map it to your steps and show where a person stays in control.
Begin with a few high-volume agreements with clear rate cards.
Compare agent output with a manual review of the same invoices.
Include expiry and renewal logic once rates are reliable.
Extend to more vendors and keep disputes with named owners.
This shows coverage, and it only means something if the contracts are on file and current. Pair it with the rate of confirmed deviations.
Quick answers to what people ask most about contract to invoice validation.
Book a demoIt is the check that an invoice's charges are consistent with the signed contract, covering rates, fees, volumes, term, scope and payment terms, done before the invoice is approved.
PO matching compares an invoice with an order and receipt. Contract validation compares it with the negotiated terms, which can catch a wrong rate even when the PO and quantity agree.
It needs the contract documents. It can read them to extract terms, and people confirm the extracted rules before they are used for checks.
The agent routes it to the contract owner or AP, depending on your rules. Nobody is paid or denied automatically.
What is no PO invoice detection?
→What is invoice intake?
→What is invoice email triage?
→What is invoice spam filtering?
→Bring a small sample of real items. We will show what Flo handles on its own and where it hands over to your team.
