Upon approval of the SEC Articles and By-laws, your corporation begins to acquire a legal personality apart from you and the other owners. Likewise, a new taxpayer is being created and by virtue of the memorandum of agreement (MOA) between SEC and BIR, new corporations are now assigned a new tax identification number (TIN). The corporation's next step then is to regularize the registration of such TIN with the BIR with the following requirements:

• Application for registration (click sample BIR Form No. 1903) properly filled out with necessary details and tax types to be enrolled upon, and signed by the authorized personnel;
  
• Copy of Articles of Incorporation and By-laws duly approved by the SEC;
• Copy of the lease contract for the office space;
• Payment of the annual registration fee of P500.00;
• Payment of the documentary stamp tax (DST) of P1.00 per P200 par value or fractional part of the subscribed capitalization in the Articles. Payment should be made within 5 days of the month following the month of SEC approval of Articles, otherwise, penalties would be imposed.
• Documentary stamp sold at P25.00

Upon completion of the above the BIR will process with the computer system the taxpayer's files and issue the following that requires to be posted in any conspicuous place of the office:

• BIR Certificate of Registration; and
  
• Ask for BIR poster.
  

Along with the registration of the BIR is the registration of the books of accounts (especially manual books), and official receipts, if opted to. In some cases however, said registrations may follow for practical reasons that they take a longer time like, computerized books registration requiring tests and official receipts or invoices requiring pre-approved authority to print.

Certain reportorial requirements will be required to be filed by virtue of the registration like the VAT/OPT returns, income tax returns, annual registration fee for every year thereafter, audited financial statements, if any, and other reports.