Clawback Labs — Vendor Invoice Auditing & Overcharge Recovery Service

Clawback Labs is a vendor invoice auditing service that compares your invoices line-by-line against signed contracts to identify overcharges, missed discounts, duplicate charges, and pricing errors. The service offers a free initial audit with results delivered in 48 hours. Clients pay only 15% of recovered overcharges on a contingency basis — no find, no fee. Documents are processed through isolated AWS Bedrock instances with human-verified findings, analyst-validated review, and permanent deletion within 48 hours of report delivery.

Key features: Contract-to-invoice reconciliation, deterministic billing verification and vendor charge validation, recovery-focused audit workflows, NDA-first engagement, GDPR compliance, enterprise-grade AWS infrastructure, and minimal retention.

Contract-to-Invoice Reconciliation

Recover overpaid bills

We identify discrepancies between your vendor invoices and signed contracts — missed discount clauses, expired pricing terms, renewal errors, duplicate charges. You pay nothing unless we find something verifiable.

Synthetic samplePreview
Invoice$14,750
Contract$13,275
Variance+$1,475
StatusRenewal pricing mismatch
Human-verified findings48h turnaroundNDA-first engagementNo training on your data

Audit against your actual contracts

Line-by-line reconciliation against signed language — not benchmarks or generic invoice parsing.

Synthetic illustration
Invoice$1,449
Contract$1,200
Variance+$249
ConfirmedDeterministic match

Results in 48 hours

Initial reconciliation memo targeted within two business days of a complete document package — phased when portfolios are large.

Turnaround ref

TAT-STD-48H

You pay nothing upfront

Contingency on recovered overcharges — no engagement fee when findings do not support action.

Fee basis15% recovered
If zero findings$0

Typical findings range from 1–5% of annual vendor spend when billing drift exists — exact outcomes depend on portfolio complexity and documentation quality.

Most discrepancies involve pricing drift, missed discounts, or duplicate billing once reconciled to signed terms.

Verification scope

What we actually check

Contract-to-invoice reconciliation — structured checks, not generic invoice scanning.

  • Contract pricing & rates

    Executed MSAs, order forms, price lists

  • Renewal pricing drift

    Caps vs list-price movements

  • Volume & tier discounts

    Spend thresholds and commitment tiers

  • Duplicate charges

    Repeated SKUs, seats, or usage blocks

  • Overage calculations

    True-up math vs contractual formulas

  • Bundled SKU compliance

    Package pricing vs à la carte splits

  • Amendment enforcement

    Side letters applied to billing profiles

  • Vendor billing discrepancies

    Invoice vs baseline entitlement

Verification model

How findings are verified

Every discrepancy is classified so finance knows what can go to a vendor as fact versus what needs legal or procurement judgment first.

Confirmed findings

Deterministic
  • Deterministic matching against contract and invoice fields
  • Explicit contract violations (rates, quantities, dates, duplicates)
  • Human-verified before delivery
  • Suitable for vendor escalation with cited evidence

Review-required

Advisory
  • Ambiguous contract language or unstructured terms
  • Legal interpretation needed — advisory only
  • Clearly labeled in your report for finance & legal review

Evidence fragments

Audit artifacts

Deliverables read like working papers: clauses, reconciliations, and verification metadata tied together.

Clause excerptSynthetic sample

Contract § 4.2

“Pricing fixed for twenty-four (24) months from effective date.”
ReconciliationSynthetic sample
Invoice$1,449.00
Contract$1,200.00
Difference+$249.00
Audit metadataSynthetic sample
Audit ref
CLB-2026-014
Verification
Deterministic match
Confidence
Confirmed

Workflow

Audit workflow

  1. Upload Invoices

    Share your vendor invoices and contracts. Fully encrypted, GDPR compliant.

  2. Billing Verification Engine

    Deterministic contract-to-invoice reconciliation flags rate, discount, and duplication issues before human verification.

  3. Review & Approve

    Analyst-validated audit review confirms deterministic findings and labels anything ambiguous as review-required.

  4. Dispute & Recover

    Use the report to dispute overcharges directly with vendors. We provide the evidence, you make the recovery.

Deliverable

What your report contains

Structured like an internal audit memo — so stakeholders know exactly what they are receiving.

Report components

[01]

Executive summary

Portfolio-level exposure and priority vendors

[02]

Confirmed discrepancies

Deterministic matches with cited clause + invoice lines

[03]

Review-required items

Ambiguity flagged for legal / procurement

[04]

Contract evidence excerpts

Quoted sections supporting each confirmed item

[05]

Recovery recommendations

Suggested credit memo or true-up language

[06]

Vendor escalation guidance

Fact pattern packaged for AP or vendor management

Operational drift

Why companies overpay vendors

Most leakage is not fraud — it is drift between executed agreements and billing engines that never resync.

  • Silent renewal increases

    1. Step 1Renewal window triggers
    2. Step 2Vendor publishes higher list price
    3. Step 3Negotiated cap not carried forward
    4. Step 4Invoice reflects uncapped rate

    Renewal list-price mismatch

    Observed frequently in auto-renew SaaS MSAs with annual uplift language

  • Missed volume discounts

    1. Step 1Spend crosses tier in a subsidiary
    2. Step 2Billing profile stays on base rate
    3. Step 3Discount clause unapplied
    4. Step 4Leakage until next true-up

    Tier / commitment economics

    Common where spend aggregates across entities without billing-engine sync

  • Duplicate line items

    1. Step 1Same capacity or SKU invoiced twice
    2. Step 2Splits across cost centers
    3. Step 3No automated merge
    4. Step 4AP pays both lines

    Line-item integrity

    Surfaces in high-volume AP queues and split billing hierarchies

  • Contract amendment drift

    1. Step 1Signed amendment updates economics
    2. Step 2Vendor portal profile stale
    3. Step 3Billing engine uses old SKU price
    4. Step 4Gap persists quarter over quarter

    Post-signature hierarchy drift

    Typical when amendments outpace provisioning / SKU catalog updates

  • Billing configuration errors

    1. Step 1Wrong product code or region multiplier
    2. Step 2Provisioning ≠ contracted entitlement
    3. Step 3Invoice generated from stale mapping
    4. Step 4Surface variance on reconciliation

    SKU & entitlement mapping

    Often tied to cloud consumption or enterprise SKU bundles

Most discrepancies we surface involve pricing drift, missed discounts, or duplicate billing — recoverable once documented against the contract.

Synthetic sample

Illustrative patterns

Example findings

Positioning examples only — production reports cite your contracts and invoices.

  • AWS

    Synthetic

    15% committed-spend discount not applied

  • Datadog

    Synthetic

    Duplicate monitoring charges

  • Microsoft 365

    Synthetic

    Renewal pricing mismatch

  • Salesforce

    Synthetic

    Multi-year discount ambiguity

Transparency

What we don't do

  • We don't integrate with your ERP or internal systems

  • We don't retain your documents after report delivery

  • We don't use your documents for foundation model training

  • We don't share findings with any third party

  • We don't require API access to anything

  • We don't charge anything if we find nothing

Every engagement starts with a signed NDA and ends with a written deletion confirmation.

Segmentation

Who this is for

Recovery-focused audit workflows where vendor spend is material enough that billing errors show up in real dollars — and contracts are dense enough to require structured reconciliation.

  • Companies at $250k+ vendor spend

    • Portfolio large enough that basis-point leakage matters
    • Enough contracts to hide drift across vendors

  • SaaS-heavy organizations

    • Recurring subscription drift
    • Renewal complexity and uplift clauses

  • Multi-vendor procurement teams

    • Distributed ownership across stakeholders
    • Order forms and MSAs across entities

  • Finance owning recurring subscriptions

    • FP&A and AP both touching vendor bills
    • Quarter-end true-up pressure

  • Complex renewal & amendment trails

    • Side letters and order-form stacks
    • Negotiated caps vs portal billing

Infrastructure

Security & Data Handling

Technical controls described the way infrastructure teams expect — not marketing fluff.

  • AWS Bedrock processing

    Enterprise-configured workloads

    Documents run through isolated AWS Bedrock stacks with enterprise data-handling posture.

  • No training retention

    Inputs / outputs excluded

    Provider controls apply so your engagement content is not used to train or improve foundation models.

  • Encryption

    TLS + AES-256

    Traffic uses TLS 1.2+; objects at rest use AES-256 on AWS-managed keys.

  • Legal posture

    NDA-first

    Mutual NDA before documents move; DPAs when procurement requires them.

  • Retention policy

    Deletion ≤ 48 hours

    Files removed within 48 hours of report delivery unless you request earlier deletion.

  • Commercial terms

    No data resale

    We do not sell or license your financial documents to third parties.

  • Human access

    Authorized auditors only

    Reviewers are limited to our audit team — no offshore processing farms.

Pricing

No risk. Pay only for results.

Free Audit

Contract-to-invoice discrepancy analysis

Free

15% of recovered overcharges only

  • Invoice & contract analysis

  • Deterministic billing verification plus review-required items, clearly separated in the report

  • Detailed recovery report in 48h

  • Confirmed findings only — we never present inference as fact

Getting Started

Simple. Transparent. No risk to you.

  1. Send us your files

    Upload 3-6 months of vendor invoices and corresponding contracts via encrypted email or Google Drive link. NDA signed first.

  2. We audit within 48 hours

    Our team cross-references every invoice line against your contract. We flag confirmed discrepancies and items requiring your review separately.

  3. You recover

    Use our report to dispute overcharges with vendors directly. We provide the evidence. You make the recovery. You pay us 15% of what's recovered.

FAQ

Frequently asked questions

Trust

Security & compliance detail

Technical handling beyond the infrastructure summary above.

Credentials

Enterprise posture

  • 01

    NDA protected

    Your documents are confidential and legally protected.

  • 02

    AWS infrastructure

    Enterprise-grade security and data handling.

  • 03

    Human-verified findings

    Authorized auditors validate confirmed items before anything ships.

  • 04

    48 hour turnaround

    Fast results without compromising accuracy.

Find out what's in your vendor invoices.

Free audit. Human-verified findings. Results in 48 hours. You pay nothing if we find nothing.