BIR office with jurisdiction over taxpayers within a specific geographic area. Every registered taxpayer has a designated RDO.
The Revenue District Office is your primary point of contact with the BIR. The Philippines is divided into over 110 RDOs, each serving taxpayers within a defined geographic area. Your RDO is determined by your home address (for individuals) or principal place of business (for business entities). Every BIR transaction — registering a business, applying for an ATP, updating your COR, or responding to a notice — goes through your assigned RDO.
RDO codes are two-to-three digit numbers printed on your TIN and COR. For example, RDO 50 covers Pasay City; RDO 039 covers Quezon City (Novaliches). Knowing your RDO code saves time when calling the BIR or filling out forms.
In practice: A restaurant owner in BGC, Taguig is registered under RDO 43 (BGC/Fort area). When they need to update their Certificate of Registration after moving to a new address in Makati, they must file a transfer request — first completing formalities at RDO 43, then registering at the Makati RDO (RDO 47 or 50, depending on the exact address).
Why it matters: Filing a tax return at the wrong RDO can result in it being recorded as unfiled at the correct RDO — potentially triggering penalties even if you paid. Always verify your RDO assignment before submitting any document. If your business moves to a different city or municipality, transfer your RDO registration promptly to avoid administrative headaches.
Large taxpayers (those with annual gross sales exceeding ₱1 billion or meeting other criteria) are registered under the Large Taxpayers Division (LTD) rather than a regular RDO.