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BIR CAS and EIS Ready Before the December 31, 2026 Deadline
Manage accounting, invoicing, sales, inventory, purchasing, and reporting with Microsoft Dynamics 365 Business Central. With the December 31, 2026 deadline for applicable taxpayers covered by the BIR’s electronic invoicing requirements, businesses using a Computerized Accounting System (CAS), Computerized Books of Accounts (CBA) with electronic invoicing, or other covered invoicing software should review their current system and prepare for compliance.
Microsoft Dynamics 365 Business Central provides an integrated ERP platform for managing core business operations, including accounting, sales, purchasing, inventory, invoicing, and reporting. As a Microsoft Dynamics 365 Business Central provider in the Philippines, Mustard Seed Systems Corporation supports businesses with system assessment, configuration, implementation, training, and BIR-related requirements.
Is Your Current Accounting System Ready for the December 31, 2026 BIR CAS & EIS Deadline?
Are your accounting, invoicing, sales, purchasing, and inventory processes handled through spreadsheets, disconnected systems, or software that may not support your current BIR requirements? Before the deadline, review your current setup and identify any changes needed for compliance.
Key areas to review:
- Computerized Accounting System (CAS) setup
- Electronic invoicing requirements
- Books of Accounts and accounting records
- Invoice and transaction processes
- Sales and purchasing workflows
- Inventory records
- BIR-required reports and data
- Integration between accounting and operational systems
The December 31, 2026 deadline makes it important to assess your current system early and determine whether your accounting and invoicing processes need to be updated.
Microsoft Dynamics 365 Business Central for BIR CAS & EIS Requirements
Microsoft Dynamics 365 Business Central is an ERP solution designed to bring core business processes into one system.
It can support:
- Accounting and financial management
- Sales and invoicing
- Purchasing
- Inventory management
- Customer and vendor management
- Fixed assets
- Bank and cash management
- Financial reporting
- Business intelligence and dashboards
- Multi-company and multi-location operations
- BIR-related accounting and reporting requirements
With the right implementation and configuration, Business Central can help businesses establish a more organized system for managing transactions, financial data, and reporting.
What Is BIR CAS and EIS?
What is BIR CAS?
A Computerized Accounting System (CAS) is a computerized system used by businesses to record, process, and maintain accounting transactions and records.
Businesses using computerized accounting systems may need to comply with applicable BIR registration, reporting, invoicing, and record-keeping requirements depending on their taxpayer classification and system setup.
What is EIS?
The Electronic Invoicing System (EIS) refers to the electronic invoicing requirements applicable to covered taxpayers under current BIR rules.
The specific compliance requirements depend on the taxpayer's classification, existing accounting or invoicing system, and applicable BIR regulations.
Important: BIR compliance requirements can vary depending on the taxpayer and system configuration. A proper assessment should be conducted before implementation.
Why Move to Microsoft Dynamics 365 Business Central?
Already Using Microsoft 365, Excel, or Other Microsoft Tools?
If your business already uses Microsoft 365, Excel, Outlook, Teams, or Power BI, Microsoft Dynamics 365 Business Central extends your existing Microsoft technology into an integrated ERP system for accounting, sales, purchasing, inventory, invoicing, and reporting.
Instead of managing data across separate spreadsheets and applications, Business Central centralizes key business processes and information in one system, helping your team work with consistent data and supporting reporting, analysis, and BIR-related requirements.
Business Central + Power BI
Business Central data can also be connected with Power BI for business reporting and dashboards.
Data Connection → Power BI → Reports & Dashboards → Business Decisions
This gives management better visibility into financial and operational performance.
Who Should Consider Business Central for BIR CAS & EIS?
Microsoft Dynamics 365 Business Central may be suitable for businesses that:
- Need to review their current CAS before the December 31, 2026 deadline
- Need an ERP for accounting and financial management
- Need integrated invoicing, sales, purchasing, and inventory
- Are moving away from spreadsheet-based accounting processes
- Operate multiple locations or business units
- Need centralized financial and operational reporting
- Already use Microsoft 365 or other Microsoft solutions
- Need an ERP that can be configured for Philippine business requirements
From Assessment to Business Central Implementation
Why Choose MSSC for Microsoft Business Central?
Mustard Seed Systems Corporation (MSSC) has 27 years of technology implementation experience supporting businesses in the Philippines. As a Microsoft Dynamics 365 Business Central provider, MSSC can support implementation based on Philippine accounting, reporting, operational, and applicable BIR-related requirements, from requirements assessment and configuration to data migration, training, and after-sales support, with nationwide support for businesses across the Philippines.
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