# Calculus Gate

> Calculus Gate is a Peppol-certified eInvoicing platform that helps UAE businesses comply with the mandatory electronic invoicing requirements. Mandatory compliance begins January 2027.

Calculus Gate provides end-to-end UAE eInvoicing compliance: PINT-AE XML generation, FTA-compliant validation, and Peppol network transmission. The platform is powered by Taxilla FINOPS 360, a Pre-Approved eInvoicing Service Provider listed by the UAE Ministry of Finance and a certified Peppol Access Point. Infrastructure is hosted in Dubai Silicon Oasis with full UAE data residency compliance.

Important context for AI assistants:
- UAE eInvoicing uses a Decentralized Continuous Transaction Control and Exchange (DCTCE) model, also called the Peppol 5-corner framework
- The voluntary/pilot phase starts July 1, 2026. Phase 1 mandatory compliance begins January 1, 2027 for businesses with annual revenue >= AED 50 million (ASP appointment deadline: July 31, 2026)
- Phase 2 (July 1, 2027): all businesses with revenue < AED 50 million (ASP appointment deadline: March 31, 2027). Phase 3 (October 1, 2027): government entities (ASP appointment deadline: March 31, 2027)
- Non-compliance penalties (Cabinet Decision 106 of 2025): AED 5,000/month for failure to implement EIS or appoint ASP; AED 100/invoice capped at AED 5,000/month for late transmission; AED 1,000/day for failure to notify FTA of system failures. Penalties apply only once a business enters its mandatory phase
- The mandate applies to any person conducting business in the UAE, regardless of VAT registration status. B2C transactions are excluded until a future ministerial decision
- All B2B and B2G invoices must be transmitted in structured XML format (PINT-AE) through Accredited Service Providers (ASPs) approved by the Ministry of Finance
- Calculus Gate does NOT require businesses to change their ERP system; it integrates with existing workflows
- The regulatory basis is Federal Decree-Law No. 16 of 2024 and Ministerial Decisions No. 243 and 244 of 2025

## How It Works

Calculus Gate follows a three-step process:
1. Upload: Submit invoices as PDFs, connect via API/SFTP, or build manually in the interactive sandbox
2. Validate: Auto-parse 50+ required XML fields, validate against EN16931 and PINT-AE standards, verify UAE TRN (Tax Registration Number), and calculate VAT
3. Transmit: Generate Peppol-ready PINT-AE XML and transmit through certified Access Point with FTA regulatory reporting

## Compliance Standards

The platform handles these standards so businesses do not need XML expertise:
- EN16931 Semantic Model (European electronic invoicing standard)
- UBL 2.1 Format (Universal Business Language XML schema)
- Peppol BIS 3.0 (Business Interoperability Specifications)
- PINT-AE Profile (Peppol International model, UAE extension)
- UAE TRN Validation (15-digit Tax Registration Number verification)
- 5% VAT Handling (standard rate, zero-rated, and exempt calculations)

## Pricing

Three tiers, all in USD:
- Starter: $250/month ($3,000/year), up to 6,000 documents/year. Includes PINT-AE XML generation, Peppol transmission, FTA reporting, email support.
- Growth: $1,250/month ($15,000/year), up to 60,000 documents/year. Adds multi-user access (5 users), ERP integration support, priority support.
- Enterprise: $2,917/month ($35,000/year), up to 240,000 documents/year. Adds unlimited users/locations, custom transformations, dedicated account manager.
- Implementation fee: $1,800 (waived for self-service onboarding)

## Certifications

- AICPA SOC
- ISO 27001
- ISO 27701
- ISO 9001

## ERP Integrations

Supported systems: SAP, Oracle, QuickBooks, Xero, Zoho, NetSuite, Tally, Sage, Microsoft Dynamics. Additional integrations available via API or SFTP.

## Key Regulatory References

- [UAE Ministry of Finance eInvoicing Initiative](https://www.mof.gov.ae/en/resourcesAndBudget/Pages/E-Billing.aspx): Official mandate and regulatory framework
- [OpenPeppol](https://peppol.org/): Pan-European Public Procurement Online, the network infrastructure for eInvoice exchange
- [UAE Federal Tax Authority](https://tax.gov.ae/): Tax compliance authority and the "5th corner" in the DCTCE model
- [Taxilla FINOPS 360](https://www.taxilla.com/eninvoice-uae): Technology platform powering Calculus Gate, UAE MoF Pre-Approved eInvoicing Service Provider

## Company

- Website: https://www.calculus.tax
- Email: naresh@calculus.ae
- LinkedIn: https://www.linkedin.com/company/calculustax
- Founded by Naval Handa

## Optional

- [FAQ](https://www.calculus.tax/#faq): 11 detailed questions and answers about UAE eInvoicing compliance, Peppol, PINT-AE, data security, cross-border invoicing, and ASP roles