Read rows and totals
The IDP agent pulls every line item with article, quantity, unit price, row total and tax rate, plus net, tax per rate, discount, early payment terms, currency and grand total. Every value comes with its position on the page.
Risk calculation errors
Quantity times price. Recalculated before you pay.
Most wrong invoices are not forgeries. They are simply miscalculated. Someone still has to notice.
Rows, subtotals, tax rates and deductions are recalculated. The difference comes with its place in the document.
No credit card No template per supplier Every figure with a source location
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How it works
Reading is not enough, someone has to do the maths.
A figure does not become correct by being printed in bold. PaperOffice recalculates the document and compares the result with what it claims.
Recalculate, do not re-read
The Intelligence tier multiplies quantity by unit price per row, adds the rows up, checks tax separately per rate and holds discount, early payment deduction and rounding against the stated total. Cross-validation runs across the whole document, up to 3,000 pages.
Stop the deviation
You define the difference that matters, per amount, supplier or workspace. Above it the document goes to the review queue instead of to payment, the reviewer sees the disputed figure in the original, and the outcome is logged as a finding.
Where the arithmetic check runs
- Manual Upload a disputed document and go through it row by row.
- Batch Recalculate a whole stack of invoices in one pass.
- Workflow Review, approval and the query back to the supplier run as a rule.
- Workspace Every newly filed invoice is recalculated without a manual step.
- REST API Hand documents over from your ERP and pull the checked values back.
- MCP Ask Claude, ChatGPT or Cursor why a total does not add up.
What this solution covers
Every place where figures drift.
Calculation errors rarely sit in the grand total. They sit in one row, one tax rate or one deduction.
- Row arithmetic
Quantity times unit price against the stated row total, row by row, across pages as well.
- Cross-validation
The Intelligence tier checks totals and relationships across the entire document, up to 3,000 pages.
- Tax per rate
Mixed documents with 19%, 7% and 0% are recalculated separately for each rate.
- Discount and rounding
Deductions and cent differences are part of the calculation instead of being skipped.
- Foreign currency
Currency per document, conversion through the currency API rates for the date you pick.
- Source location per figure
Every value comes with a bounding box in the original so reviewers do not have to search.
- Your tolerance
You set the difference that triggers a review, per amount, supplier or workspace.
- Finding in the log
Calculation errors land in the audit centre with severity, decision and person.
What PaperOffice solves it with
Six building blocks, one path.
The arithmetic check is not a separate product but the interplay of modules you already use.
IDP Agents IDP agents read line items, totals and tax rates as fields, each with its source location. Entities Entities connect invoice, order and delivery note through their reference numbers. Financial Analytics Financial analytics show amounts and due dates across all documents and flag outliers. Human-in-the-Loop Human-in-the-loop moves disputed documents into a queue for people to decide. Workflow Agents Workflow agents hold the payment, collect approvals and write back to the supplier. Audit Center The audit centre records calculation errors as findings with severity and decision.
Security and compliance
Documents stay traceable.
Anyone stopping a payment has to explain why. Every checked figure stays tied to the document it came from.
EU data centerISO 27001SOC 2 Type IIGDPR
Security and compliance Location
Processing in our own EU data centers, no US cloud.
Encryption
AES-256 at rest, TLS 1.3 in transit.
Retention
Retention period per document type, filing with versions and deletion rules.
Traceability
Every figure with source location, confidence and timestamp in the audit trail.
Questions about invoice checking
What you should know before you start.
Do I need a template per supplier?
No. Extraction works without a template per supplier because it reads layout and context instead of fixed coordinates. You describe the fields you need once, and that holds for every document.
What about one cent rounding differences?
Those would flood any review queue. So you set a tolerance: below it the document passes, above it it goes to review. The tolerance can differ per amount, supplier or workspace.
Are mixed tax rates handled properly?
Yes. Net and tax are calculated separately per rate and then merged into the total. Documents with 19% and 7% side by side are the most common home for quiet errors.
Can it check against our purchase order?
Yes, as long as the reference is on the document. Entities connect invoice, order and delivery note through order, delivery note and contract numbers, and the reviewer sees the cases side by side.
What happens to a faulty invoice?
It goes to approval, not to posting. The reviewer sees the disputed row in the original, decides, and can write to the supplier straight from the workflow. The decision stays in the trail.
What about ZUGFeRD and XRechnung?
For hybrid formats the embedded XML is read as well and matched against the visible document. The arithmetic check applies there too, because a machine-readable document can be summed up just as wrongly.
How does the result reach our accounting?
As an export, through the REST API, or through a workflow that hands the checked invoice to your system. The path is the same for one document or a thousand.
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Premium Winery less documentation effort
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Measurable customer success
90%
compliance rate
Kumul Minerals Holdings Limited92%
faster print approvals
The Challenge Printing Company Inc.85%
efficiency increase
K60-Gitterrostsysteme GmbH & Co. KG80%
faster processing
Ayuntamiento de Carrión de los Condes"Enterprise document management for all our mining operations. World class."
Mining & Resources "FDA-regulated pharmaceutical labels require seamless documentation. PaperOffice has reduced our approval process from days to hours."
Printing & Packaging "Technical documentation and order processing now run fully automatically."
Industry & Manufacturing "Digitization has revolutionized our administration. Citizen inquiries are now processed in minutes instead of days."
Public Administration "Patient records, medical reports, and referrals are automatically captured and classified. Our practice team finally has time for their patients."
Health & Medicine "8,000 employees and thousands of guest documents every day. PaperOffice has completely digitized our back-office processes."
Hospitality & Entertainment "Loan applications and compliance documents are now processed in minutes instead of hours. The regulatory review is fully automated."
Regional Bank "Construction project documentation and compliance are now digital and traceable."
Construction & Real Estate "Check-in forms, invoices, and guest communications are fully digital. Our concierge team now focuses on providing excellent service."
Hospitality & Tourism "Gas station billing, supplier documents, and compliance records from over 250 stations are automatically processed and archived."
Energy & Gas Stations "GMP-compliant documentation for pharmaceutical functional labels is now fully automated. Audit trails are seamless and instantly accessible."
Pharma & Labels "Blueprints, permits, and customer files for our wooden houses are now managed centrally. After six generations, we are finally paperless."
Construction & Timber "Supplier contracts, certificates, and customs papers for hundreds of roasteries worldwide are automatically captured and assigned to the correct product."
E-Commerce & Retail "Temperature logs, CMR waybills, and food certificates are automatically scanned and assigned to the order. Misallocations are a thing of the past."
Logistics & Transport "Heavy transport permits, route plans, and project documentation are now instantly accessible digitally. No more searching through folders."
Logistics & Transport "Customs documents, warehouse receipts, and shipping orders for our Eastern European network are automatically classified. Four generations of logistics, finally digital."
Logistics & Transport "Printing specifications, customer approvals, and material certificates are now accessible centrally. The production error rate has dropped to near zero."
Printing & Packaging "Sustainability certificates, supplier contracts, and customer specifications are processed automatically. Swiss precision, now also digital."
Packaging & Labels "Building permits, subcontractor contracts, and acceptance protocols for our commercial properties are now fully documented digitally."
Construction & Real Estate "Purchase agreements, exposés, and customer files from over 30 years of market leadership are now digitally searchable. Every agent finds everything in seconds."
Real Estate & Management "Ocean freight documents, customs declarations, and bills of lading are automatically captured. Baltic Sea logistics has never been so efficient."
Logistics & Freight "Thousands of custom packaging orders per week, including design approvals, print data, and delivery documents. PaperOffice keeps it all together."
E-Commerce & Packaging "Pathology lab documentation and device certifications are now fully automated. Seamless traceability for every specimen."
Laboratory & Medical Technology "Loan documents, security papers, and customer correspondence are processed in minutes instead of hours. The regulatory review is seamless."
Regional Bank "Technical specifications, quality certificates, and recycling protocols for our steel production are central and instantly accessible."
Steel Construction & Industry "Pharma and cosmetic label specifications with regulatory requirements are automatically checked and approved. No more manual checklists."
Pharma & Labels "KYC documents, investment reports, and regulatory filings are classified in seconds. As an MAS-regulated robo-advisor, seamless compliance is essential."
Fintech & Wealth Management "Safety data sheets, transport permits, and ADR documents for chemical logistics are automatically assigned. Zero tolerance for errors."
Logistics & Transport "Certificates of authenticity, supplier records, and customer warranties for our pearl collections are automatically archived and instantly accessible."
Luxury & Jewelry "SME loan applications, security documents, and regulatory reports are automatically classified. Our advisors have more time for customer consulting."
Commercial Bank "Customer files from over 135 years of banking history are being successively digitized. 5,000 employees now have instant access to all documents."
Private Bank "Microcredit applications and compliance documents for millions of customers are now processed in minutes instead of days. A game changer for financial inclusion."
Development Bank "Hundreds of thousands of delivery notes and return slips per day are processed automatically. Vietnam's leading e-commerce logistics provider, now paperless."
E-Commerce Logistics "CNC manufacturing protocols, material certificates, and customer specifications for oil, gas, and aerospace projects are now fully documented digitally."
Precision Metal & Manufacturing "Vision 2030 requires complete digitization. PaperOffice processes government documents for Saudi Arabia's digital backbone."
GovTech & IT "Material certificates, hardening protocols, and customer specifications are automatically assigned to the correct order. Australia's only Q&T manufacturer, now paperless."
Specialty Steel & Industry "Weld seam protocols, structural calculations, and project plans are managed digitally. Our workshop teams have access in real time."
Steel Construction & Manufacturing "Aerospace certificates, CNC programs, and customer tolerances are automatically classified. AS9100 compliance has never been easier."
Precision Parts & Manufacturing "Merchant contracts, KYC documents, and transaction receipts for hundreds of thousands of SMEs are processed in seconds. Mexico's payment revolution, paperless."
Fintech & Payments "Harvest documentation, export certificates, and quality protocols for our high-altitude Malbecs are automatically archived. 120 years of winemaking tradition, now digital."
Premium Winery "Millions of user verifications and regulatory documents are processed fully automatically. Scaling without paper."
Digital Banking "Merchant onboarding documents and compliance records for Africa's leading payment provider are processed in minutes instead of days."
Fintech & Payments "Organic certificates, supplier audits, and product labels for thousands of natural products are automatically checked and archived."
E-Commerce & Organic "Regulatory documents from 33 African countries, partner contracts, and audit trails are managed fully automatically. An enterprise DMS for a $3 billion fintech."
Fintech & Payments "Prescriptions and medication management now run fully automatically. More time for our patients."
Pharma & Healthcare "Centuries-old documents are now digitally searchable. A milestone for our historical archives."
Religious Institution "Our caregivers finally have more time for residents instead of paperwork."
Care & Health "500,000+ records digitized. Our deputies now find all information instantly."
Government & Administration "Patient records management is now a breeze. Everything automatically captured and archived."
Medicine & Healthcare "Inheritance and estate documentation is now efficient and error-free."
Estate Services "Digital property management for all our residential complexes. Tenants and owners are thrilled."
Real Estate & Management "With PaperOffice, we have accelerated our invoice processing by 99%. The AI automatically recognizes all relevant data and assigns it correctly."
Industry & Packaging "PaperOffice has become indispensable to our daily work. Orders, quotes, and invoices are now automated."
Trades & Crafts "The documentation of our care services is now digital and automated. More time for our patients."
Care & Health "Technical drawings, bills of materials, and quality protocols are instantly searchable. A search that used to take 30 minutes now takes 30 seconds."
Mechanical Engineering & Manufacturing "Client receipts, tax assessments, and annual financial statements are automatically sorted and assigned to the correct client. Receipt chaos is a thing of the past."
Tax Advisory & Legal "Project documentation, SLAs, and customer communication for our IT consulting projects are automatically classified and archived."
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