Invoice Fraud Detection Software for AP Teams | KlearStack
Invoice Fraud Detection Software That Catches Altered, Duplicate, and Fabricated Invoices Before Payment
KlearStack reads every invoice, checks it against the purchase order and goods receipt, inspects the file for edits, and flags duplicates before anything is approved.
- Three-way match and duplicate checks on every invoice
- Every pass and flag logged, audit-ready
Get a Free Invoice Fraud Demo KlearStack Differentiators
Loved by All!
The Checks
Every Invoice Checked 5 Ways Before It Reaches Approval
Expand a scenario to see the specific check that catches it, and what happens next.
Altered Amounts and Fields
Totals, line items, and tax arithmetic are cross-checked on every invoice. Figures that disagree stop the invoice before approval.
Pixel-Level Edit Detection
Spliced regions, erased fields, and overwritten values on scanned or PDF invoices are caught before the data is trusted.
Duplicate and Near-Duplicate Invoices
The same invoice resubmitted, renamed, rescanned, or lightly edited, in the same week or months apart, is caught on the second attempt.
Three-Way Match Verification
Every invoice is matched against its purchase order and goods receipt. Unmatched quantities, prices, or missing POs route to review.
Internal Consistency Checks
Dates, totals, and line items must agree with each other. An invoice that contradicts itself is flagged with the mismatch highlighted.
What OCR Tools And LLMs Miss, KlearStack Is Built To Catch
Why Teams Pick KlearStack
Generic OCR, IDP Tools, and LLMs
These tools read a document and return the data. Whether that document is genuine is a question they never ask.
- Extraction only, no authenticity checks
- LLMs: a different answer on every run
- Documents leave for external APIs
- No audit trail a regulator accepts
KlearStack Proprietary AI
Every document is read, then interrogated: forensic checks, signature authentication, and cross-references run inside the same pass, and every result is logged.
- Forensic fraud checks in the same pass
- Deterministic results, every single run
- On-prem and private deployment options
- Field-level audit trail, ready for review
Up to 99% Data Extraction Accuracy
Fraud checks are only as good as the read. Fields come in right the first time.
95%+ Straight-Through Processing
Clean cheques clear untouched within 90 days of go-live. Only suspects reach a human.
500+ Document Types Supported
Cheques, statements, invoices, KYC packs, and everything else that moves money.
Already Using SAP, Tally or QuickBooks KlearStack
Why Teams Pick KlearStack Over OCR Tools and LLMs
One AI, two jobs: 150M+ documents processed, with fraud and forgery checks in the same pass.
Proprietary DROC.ai
Built for documents, not conversation. Not a generic LLM, not adapted OCR, and 150M+ processed documents deep.
Up to 99% Accuracy at Scale
Template-free extraction across 500+ document types, with human review only where confidence drops.
Fraud and Forgery Checks Built In
Tampering, forged signatures, altered fields, and duplicates flagged while the document is read, not after it's paid.
On-Premise Ready
Your documents never leave your infrastructure. SOC 2 and ISO 27001 certified, GDPR and DPDPA compliant.
Pilot in 30 Minutes
Upload your own documents, see live results, and walk into your next meeting decision-ready.
Onboarding KlearStack
One Screening Pass Inside the AP Flow You Already Run
Here’s how KlearStack becomes a part of your workflow
Before KlearStack
Approved on Familiarity
Invoices from known vendors clear on sight. A convincing fake under a known name rides through.
Sampled Matching
Three-way matches cover big amounts and spot checks. The rest clears on trust.
Duplicates Found at the Statement
The second payment surfaces in the vendor statement, months after the money left.
Fraud Discovered at Audit
The fabricated invoice turns up in the audit sample, with the trail gone cold.
Every invoice passes the same checks automatically, inside the AP flow it already follows.
- Every invoice matched, not sampled
- Duplicates caught at submission, not at the statement
- Flags raised before payment, not after
- Every check logged, audit-ready
- No new step for your AP team
The Problem
The Fastest Way Through AP Is a Convincing Invoice
Fraudulent invoices are built to ride routine approvals. Three gaps every AP queue lives with.
Volume Hides the Fake
An AP team clearing hundreds of invoices a day approves on pattern recognition. A convincing fake matches the pattern.
Duplicates Survive a Rename
The same invoice, rescanned or renamed, reads as new. It gets paid twice and found on the vendor statement.
The Match Is Partial
Three-way matching by hand covers samples and big amounts. Everything below the threshold clears on trust.
Calculate Your Savings
See how much time and money you can save with KlearStack AI.
Single-Shot Model
Processes each document independently for highest accuracy, ideal for complex, variable layouts.
Multi-Shot Model
Learns from multiple documents in a batch for faster processing, best for high-volume, uniform formats.
Document Type
Select Document Type Bank Cheques Bank Documents ID Cards KYC Documents Invoice Bill of Lading Packing List Purchase Order Contract P&L Statements Cashflow Statements
Document Volume (Pages) ⓘTotal pages processed per month, forming the basis for KlearStack's tailored pricing.
36,000 pages
Average Monthly Salary per Resource ₹30,000
NET MONTHLY SAVINGS
₹0
Compared to manual labor
ANNUAL SAVINGS
₹0
Total saved per year
EQUIVALENT RESOURCES
0
People replaced by KlearStack
* 15% lesser price in the Annual Plan
Why We Are Loved By All!
80% improvement in Turnaround Time (TAT)
95% straight-through processing (STP)
KlearStack processed our documents with 99% accuracy and boosted efficiency by 350%. It transformed how our team handles logistics documents across every channel, removing repetitive corrections and giving our operations team faster, more reliable results without adding complexity to the process.
“We Don't Have Time for a Six-Month Rollout.”
Good. That's exactly what the demo is for. Upload your documents, watch the checks run, and judge the flags yourself.
The Evaluation Kit
Your CFO Will Have Questions. These Answer Them.
Fraud detection gets bought by committee: risk, finance, IT, procurement. Each of these gives one of them what they need to say yes.
Cheque Fraud & Forensics Deck
Every forensic check explained, with what each one catches and why it matters.
BFSI & Banking Overview
How banks and NBFCs deploy KlearStack across lending, KYC, and payments. Download PDF
ROI & Cost Case
The numbers behind automated screening, built for your CFO's questions. Download PDF
Full Capabilities Deck
Extraction, validation, fraud checks, integrations, & deployment options in one document. Download PDF
FAQs About Invoice Fraud Detection
How can I detect invoice fraud?
Invoice fraud is detected by checking every invoice against its order, receipt, and itself. Altered totals, duplicate submissions, and edited files are the common markers. Manual review catches these only by luck at volume. KlearStack runs every check automatically before approval.
How to check if an invoice is real or fake?
An invoice is checked as real or fake through matching and file forensics. A genuine invoice matches its purchase order and goods receipt. A fake one fails the match or shows pixel-level edits. KlearStack flags both before the invoice reaches approval.
What is a red flag in an invoice?
A red flag is any detail that contradicts the invoice's own records. Common examples include totals that disagree with line items and repeated invoice numbers. Duplicate submissions and edited files are stronger signals. Automated checks surface every flag, not just the obvious ones.
Can fake receipts be detected?
Yes, fake receipts can be detected the same way as fake invoices. Edited receipts show pixel-level traces and internal mismatches. Duplicates are caught even when renamed or rescanned. KlearStack screens receipts alongside invoices in the same pass.
What is the difference between invoice fraud detection and invoice validation?
Invoice validation confirms the data is correct and complete. Invoice fraud detection confirms the document itself is genuine. A valid-looking invoice can still be fabricated or duplicated. AP teams need both before releasing payment.
Will fraud screening slow down invoice processing?
No, fraud screening does not slow down invoice processing. All checks run in the same pass that reads the invoice. Clean invoices flow straight through to approval. Only flagged invoices wait for a human decision.
Can it run on our own infrastructure?
Yes, KlearStack's invoice fraud detection software runs fully on your own infrastructure. On-premise deployment keeps invoices and vendor data inside your environment. Cloud deployment is available for teams that prefer it. Both options are SOC 2, GDPR, and DPDPA compliant.