The BIR Form 2316 or Certificate of Compensation Payment/Tax Withheld is an official document that states an employee's gross income and the appropriate taxes withheld by the employer during the fiscal year. BIR Certificates like this prove that an employee's pay was subjected to income tax.
In the Philippines, all companies that engaged any employee during the previous year must submit Form 2316 to the Bureau of Internal Revenue. This form is accomplished for each employee who received a salary or any other form of remuneration during the last fiscal year.
Overall, Form 2316 enables the BIR to monitor a company's tax compliance. Upon filing, employee information (e.g., work tenure, salaries, etc.) is gathered and analyzed to ensure that the correct amount of tax is subjected to the enterprise.
Moreover, this is an important document to give an employee when switching jobs to allow the new employer to correctly compute the tax withheld for the remainder of the year.