Follow the steps to complete the Bir Form 1903 online.

1. Click 'Get Form' button to obtain the online version of the Bir Form 1903. This will open the form for you to begin filling it out.
2. Fill in your registering office details, indicating whether it is a head office or branch office.
3. Enter the date of registration in the format MM/DD/YYYY, as requested in the form.
4. Select the appropriate type of organization from the list provided, marking with an 'X'.
5. Input your taxpayer identification number (TIN) if applicable for non-individual taxpayers.
6. Provide the taxpayer's name, ensuring accuracy for the registration process.
7. Specify the date of incorporation or organization, also in the format MM/DD/YYYY.
8. Enter the revenue district office (RDO) code, to be filled by the BIR.
9. Describe the main activity of the business or organization for which the registration is being made.
10. Indicate the taxpayer type—whether engaged in business or not engaged in business.
11. List the primary and secondary industries, attaching additional sheets if necessary.
12. Select the taxable year or accounting period, marking whether it is a calendar year or fiscal year and the starting date of the fiscal year if applicable.
13. Provide the local address by filling in the complete details, including barangay and city/province.
14. Input the municipality code and telephone number as required.
15. If applicable, fill in the foreign business address details in the specified fields.
16. List the relevant tax types that apply to your organization, choosing only those that are applicable.
17. Declare the information is correct, signing over printed name, and ensuring all attachments are complete. Attach copies of any required documents such as SEC registrations or mayor's permits.
18. Once finished, save your changes and choose to download, print, or share the completed form.

Complete your Bir Form 1903 online today to ensure compliance and smooth processing.