RDO Code
Last Updated: June 13, 2026
tips_and_updatesDefinition
An RDO Code is a three-digit number assigned by the Bureau of Internal Revenue (BIR) that identifies the specific Revenue District Office (RDO) where a taxpayer is registered and must file tax returns.
The RDO Code system was established under Section 21 of the National Internal Revenue Code to organize taxpayer registration and ensure proper tax administration across the Philippines. Each of the country's approximately 120 Revenue District Offices has a unique three-digit code ranging from 001 to 199. Your RDO Code determines where you file returns, pay taxes, and conduct BIR transactions. It appears on your TIN ID, Certificate of Registration (BIR Form 2303), and all tax forms you submit. The BIR assigns your RDO Code based on your residence (for individuals) or principal place of business (for entities) at the time of TIN application. RDO Codes are grouped by region and type of office. For example, codes 001-099 typically represent regular Revenue District Offices, while codes 100-199 may represent Large Taxpayers Service offices or specialized units.
Why it Matters
Your RDO Code is crucial for tax compliance because: - **Filing Location**: You must file returns and conduct transactions at your assigned RDO - **Penalties**: Filing at wrong RDO can result in ₱25,000 penalty under Section 269 of the Tax Code - **Record Keeping**: BIR uses RDO Codes to track taxpayer compliance and issue assessments - **TIN Verification**: RDO Code helps verify TIN authenticity and prevent tax fraud - **Audit Assignment**: Your RDO handles examinations and investigations of your tax records
How it Works
The RDO Code system operates through these mechanisms: **Assignment Process**: 1. Submit BIR Form 1901 (for individuals) or 1903 (for corporations) for TIN application 2. BIR determines RDO Code based on your address or principal business location 3. RDO Code is printed on your TIN ID and Certificate of Registration **Usage in Tax Forms**: - Enter your RDO Code in the designated box on all BIR forms - Annual Income Tax Return (Form 1701/1700): RDO Code box in header - Monthly/Quarterly Returns: RDO Code required for proper processing - Payment Forms (0605/1601C): Must match your registered RDO Code **Transfer Requirements**: File BIR Form 1905 within 30 days of address change to update RDO Code assignment. Failure to transfer results in ₱5,000 penalty plus 25% surcharge under RMC 21-2020.
Examples
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Common Misconceptions
Misconception
My RDO Code changes when I work in different cities — Only residence changes require RDO transfer for employees
Misconception
I can file at any RDO office — You must file at your assigned RDO or face ₱25,000 penalty
Misconception
RDO Code and TIN are the same — RDO Code is 3 digits identifying your office; TIN is 9-12 digits identifying you
Misconception
Moving to a new office does not require RDO update — Business location changes mandate RDO transfer within 30 days
Misconception
Online filing eliminates RDO Code requirements — RDO Code is still required in eBIR forms for proper routing
Frequently Asked Questions
Learn More
Income Tax Calculator (Shows RDO Code Field)
Withholding Tax Calculator (Requires RDO Code For Filing)
BIR Form 1901 (Individual TIN Application)
BIR Form 1903 (Corporation TIN Application)
BIR Form 1905 (Transfer Of Registration)
BIR Form 2303 (Certificate Of Registration)
BIR Form 1701 (Annual Income Tax Return)
How To Register With BIR (Explains RDO Assignment)
Related Content
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Related Tax Types
Related Taxpayers
Related BIR Forms
Related Guides
Glossary Terms
Sources & References (2)
Primary sources and the laws, regulations, and official issuances this page relies on. Each citation links directly to the issuing authority’s document.
- Bureau of Internal Revenue. “BIR — Registration (TIN/RDO assignment).” bir.gov.ph. Bureau of Internal Revenue, Registration Requirements. Accessed .