Your Direct Line to BIR E-Invoicing Compliance

EISync seamlessly integrates your ERP or billing system with the Bureau of Internal Revenue’s Electronic Invoicing System (EIS) — automating JSON conversion, secure API transmission, and regulatory compliance.
Request a Demo   Download EIS Readiness Guide
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BIR EIS Compliance Is Mandatory. Complexity Is Not.

The BIR Electronic Invoicing System (EIS) requires qualified taxpayers to submit sales data in strict JSON format through secure APIs — with digital signatures, encryption, and full audit trails.

For many businesses, this means:

  • Rebuilding invoice formats
  • Mapping CSV/TXT files to BIR JSON structures
  • Managing API authentication and callbacks
  • Handling VAT classifications and invoice adjustments
  • Preparing extensive documentation for Permit to Transmit (PTT)
EISync removes that complexity — without disrupting your existing ERP or billing system.

A Secure, ERP-Ready BIR EIS Integration Platform

Built for the Modern Enterprise

JSON Conversion

Automated transformation of your ERP data into BIR-standard JSON formats without manual entry.

Secure Transmission

Encrypted API channels ensuring your sensitive financial data reaches the BIR servers safely and reliably.

VAT Automation

Built-in logic for tax calculations to ensure consistency between your billing and BIR filings.

Sandbox Testing

Full environment to test submissions before going live, ensuring 100% compliance with zero risks.
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PTT Guidance

Expert assistance in securing your Permit to Transmit (PTT) from the BIR documentation team.

ERP Native Connect

Pre-built connectors for SAP, Oracle, NetSuite, and Microsoft Dynamics ecosystems.

From Invoice to BIR Submission — In 5 Seamless Steps

A structured path to total compliance with our expert team.

Data Mapping

We map your invoice CSV/TXT data fields into BIR-required JSON format.

Sandbox Testing

Authentication API setup, callback configuration, encryption, and digital signature (JWS) implementation.

Validation & UAT

Pass BIR test cases and conduct User Acceptance Testing.

Deployment

Apply for EIS Certificate and Permit to Transmit (PTT). Schedule automated posting.

Monitoring

Server monitoring, vulnerability scanning, audit trail upkeep, and version updates.

Built for Finance Leaders. Trusted by IT Teams.

Regulatory Confidence

  • Fully aligned with BIR EIS specifications
  • Handles VAT, VAT-exempt, and zero-rated classifications
  • Supports invoice cancellations, returns, and price adjustments
  • Assists in PTT documentation and submission

Seamless Integration

  • Works with ERP, POS, and billing systems
  • No core system replacement required
  • Cloud or on-premise deployment
  • Automated scheduled transmissions
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Enterprise Security

  • Encrypted API transmissions
  • JWS digital signatures
  • Regular vulnerability assessments
  • Secure audit trail logging
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Scalable Growth

  • Designed for multi-entity organizations
  • Expandable to ASEAN and global e-invoicing mandates
  • Unified compliance layer across geographies
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Why Businesses Choose EISync

Local Philippine Expertise

Deep understanding of Philippine tax laws and BIR administrative requirements through OGIS Philippines.

Managed Implementation

We don’t just provide software; we manage the entire end-to-end implementation process for your team.

Powered by OGIS

Leverage the global technology footprint of OGIS, delivering enterprise-grade reliability locally.

Backed by Enterprise Technology Expertise

EISync is developed and supported by OGIS Philippines, part of a regional technology group delivering ERP, cloud, and data solutions across ASEAN.

We don’t just implement APIs — we enable compliant digital finance ecosystems.

“The transition to BIR EIS was daunting for our IT team. EISync handled the mapping and API security so we could focus on our ERP upgrade.”

Financial Director
Retail Enterprise Group

“We integrated EISync with our SAP environment in record time. The sandbox testing features gave our auditors complete peace of mind.”

Chief Information Officer
Leading Logistics Firm

“The PTT guidance alone saved us months of back-and-forth with the bureau. Truly a complete compliance partner.”

Tax Compliance Manager
Manufacturing Multinational

Ready for BIR EIS Compliance?

Let’s assess your current invoicing process and prepare your integration roadmap.
Book a Compliance ConsultationRequest a Demo