BIR books of accounts registration is done through the Online Registration and Update System (ORUS) at orus.bir.gov.ph, and it must be completed before you record a single transaction. Every individual or business registered with the Bureau of Internal Revenue is required under Section 232 of the National Internal Revenue Code, as amended by the Ease of Paying Taxes Act (Republic Act No. 11976), to keep at least a journal and a ledger. The format you pick — manual, loose-leaf, or computerized — determines whether you need an additional permit on top of the standard ORUS registration.
The Three Formats You Can Choose
Your first decision is how you want to keep the records day to day.
- Manual books. Pre-printed, permanently bound volumes with handwritten entries. The simplest option and the usual choice for sole proprietors and small businesses. You buy blank journals and ledgers from an office supply store and have them registered before writing anything in them.
- Loose-leaf books. Computer-generated records printed on individual sheets and permanently bound at the end of each taxable year. You get the convenience of typing and printing, but you need a separate Permit to Use from your Revenue District Office before you can use this format.
- Computerized books (CAS/CBA). A full accounting system that generates journals, ledgers, and financial statements digitally. Best for high-volume operations. The system must be registered with the BIR and meet the technical requirements under Revenue Regulations No. 9-2009, including audit trails, sequential invoice numbering, and data security controls.1Supreme Court E-Library. BIR Revenue Regulations No. 9-2009 – Maintenance, Retention, and Submission of Electronic Records
Which Books Are Required
The statutory minimum under the amended Section 232 is a journal and a ledger.2Bureau of Internal Revenue. Revenue Regulations No. 7-2024 Subsidiary books such as a cash receipts journal and cash disbursements journal are no longer mandatory under the Ease of Paying Taxes Act, though many businesses still keep them because they make audit preparation easier.
If your gross annual sales, earnings, or receipts exceed P3,000,000, your books must be audited each year by an independent Certified Public Accountant, and your income tax return must be accompanied by certified financial statements.2Bureau of Internal Revenue. Revenue Regulations No. 7-2024 Below that threshold, you can use a simpler set of records authorized by the Secretary of Finance, and CPA-audited financials are not required.
How to Register Through ORUS
ORUS is now the primary channel for registering books. When you complete registration through the system, it generates a QR stamp that replaces the ink stamp a revenue officer used to apply to physical books.3Bureau of Internal Revenue. Processing of Application for Registration of Books of Accounts The stamp includes your Taxpayer Identification Number, registered name and address, the type and quantity of books being registered, the volume number, and the registration date.
You print the QR stamp and paste it on the first page of each manual or bound loose-leaf volume. For a computerized system, you attach the QR stamp to the transmittal letter that goes with the USB flash drive holding your digital books.
To complete the registration you need:
- Your TIN.
- The RDO code for the Revenue District Office with jurisdiction over your principal business address.
- Your registered business name and trade name, matching your Certificate of Registration (BIR Form 2303).
- The type of books, quantity, and volume numbers.
To update registration details or close out old books, use BIR Form 1905.4Bureau of Internal Revenue. BIR Form No. 1905 Check that every detail matches your existing Certificate of Registration before submitting. Mismatches between your registration data and your books are among the most common reasons applications get delayed or rejected.
Extra Permits for Loose-Leaf and Computerized Systems
Manual books only need the standard ORUS registration. The other two formats require a permit first.
Permit to Use Loose-Leaf Books
File BIR Form No. 1900 with your RDO, together with a sample format and a printout of the records you plan to use. Include a sworn statement identifying which books you will maintain, listing the serial numbers of any principal and supplementary documents to be printed, and committing to permanently bind the loose-leaf forms within fifteen days after the end of each taxable year.5Bureau of Internal Revenue. BIR Form No. 1900 – Application for Permit to Use Loose-Leaf Books of Accounts, Invoices and Other Accounting Records The RDO checks whether your proposed format captures the information needed for tax reporting before granting the permit.
Registering a Computerized Accounting System
This is a more involved process. Submit a formal application letter to your RDO with a detailed description of the system, flowcharts of the transaction cycle, sample printouts of every report the system generates, and a user manual covering security features, backup procedures, and error handling. If a third party developed the software, that developer must certify that the system meets BIR requirements and that source code will be available upon request.1Supreme Court E-Library. BIR Revenue Regulations No. 9-2009 – Maintenance, Retention, and Submission of Electronic Records
The system has to produce complete, accurate books that mirror the format of manual books, maintain sequential non-reusable invoice numbering, log every addition or deletion with a timestamp and user ID, and generate BIR-required reports on demand. The evaluation takes time, and deficient documentation sends you back to the start.
Deadlines You Cannot Miss
A new business must register books before recording any transactions. Do it through ORUS as part of your initial BIR registration. Waiting until you have entries to record is a mistake — until the books are registered, entries in them have no legal validity.
Loose-leaf users must permanently bind their books within fifteen days after the close of each taxable year. For calendar-year businesses, that means a January 15 deadline. The BIR has extended it in recent years. For taxable year 2025, the deadline for binding and registering loose-leaf books was moved to January 31, 2026, and the computerized-books deadline to February 17, 2026.2Bureau of Internal Revenue. Revenue Regulations No. 7-2024 Watch each year for Revenue Memorandum Circulars announcing whether extensions apply.
Preservation, Language, and Currency Rules
The Ease of Paying Taxes Act cut the mandatory preservation period from ten years to five, counted from the day after the filing deadline for the taxable year in which you made the last entry.6LawPhil. Republic Act No. 11976 – Ease of Paying Taxes Act If you filed the return late, the five years run from the actual filing date.
During those five years, BIR officers can examine and inspect your books; for income tax purposes, examination is limited to once per taxable year with certain exceptions. Keep the records at your principal place of business so they are immediately available on request.
Entries must be recorded in Philippine Pesos. Books and records can be kept in a native language such as Filipino, in English, or in Spanish.7Bureau of Internal Revenue. Revenue Memorandum Circular No. 5-2025 Supplementary records maintained in any other language need a complete and accurate translation into one of those three. One useful change: the P500 annual registration fee that was paid through BIR Form 0605 was abolished effective January 2024 under the Ease of Paying Taxes Act, even where it still appears on older Certificates of Registration.
Penalties for Non-Compliance
Bookkeeping violations and invoicing violations carry different penalties, and the figures often get confused. For failure to keep or preserve books of accounts as required by law, Section 275 of the Tax Code sets a fine of up to P1,000, imprisonment of up to six months, or both.8Bureau of Internal Revenue. Annex C – Schedule of Compromise Penalties for Registration, Invoicing, Bookkeeping and Compliance Requirements The bigger risk shows up at audit: without records to support your deductions, the BIR can disallow them and assess additional taxes, surcharges, and interest.
Invoicing violations — failure to issue invoices, missing required information, or duplicate invoices — carry steeper fines of P1,000 to P50,000, with possible imprisonment of at least four years.8Bureau of Internal Revenue. Annex C – Schedule of Compromise Penalties for Registration, Invoicing, Bookkeeping and Compliance Requirements Both penalty schedules are published in Annex C of the BIR’s compromise penalty tables. Identifying the correct violation for your situation matters more than memorizing the amounts.