Every December, employers in the Philippines must complete a key compliance task: employee tax annualisation. While it is often treated as routine paperwork, it plays a critical role in determining whether each employee has paid the correct amount of income tax for the year and whether the organization has fulfilled its duties as a withholding agent under the Bureau of Internal Revenue (BIR).
For companies managing payroll in the Philippines, whether as a locally incorporated entity or through a remote employment arrangement, this is not merely a year-end administrative exercise but a statutory obligation under the National Internal Revenue Code, as enforced by the BIR.
This guide combines practical payroll guidance with the latest compliance points. It explains what annualisation is, why it matters, and how to complete it accurately, step by step.
Tax Annualisation is the process of recalculating an employee’s total income tax liability for the full calendar year. It is typically carried out once a year, usually in December, to reconcile the tax already withheld from the employee’s pay with the amount actually due based on their total annual compensation.
Throughout the year, employers withhold tax from each payroll run using the applicable monthly or semi-monthly withholding tax tables. However, these periodic calculations are only provisional and do not always fully reflect changes in an employee’s circumstances. Common examples include:
As a result, the cumulative tax withheld over the course of the year may not align precisely with the employee’s actual tax liability on total annual earnings. Tax Annualisation addresses this by comparing:
The difference shows whether the employee has paid too much tax, too little, or the correct amount. Employers must then refund any excess or collect any shortfall before the year closes.
The final outcome of this process is reflected in BIR Form 2316, the certificate of compensation payment and tax withheld that each employee is entitled to receive. This document sets out the employee’s total compensation, total tax withheld, and any final year-end adjustment.
Every employer in the Philippines acts as a withholding agent for the Bureau of Internal Revenue (BIR). This applies equally to local companies, multinational subsidiaries, branch offices, and regional headquarters. As such, employers are legally responsible for ensuring that their employees’ income tax is correctly withheld, remitted, and reported.
Accurate tax Annualisation helps organisations to:
For foreign employers that are less familiar with the Philippine tax system, the Annualisation process can be particularly challenging. Local rules governing non-taxable benefits, reporting requirements, and filing tools may differ significantly from those in other jurisdictions.
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Each pay period, employers withhold tax using the BIR's withholding tax table, based on the employee's current gross compensation. The rates in the monthly table equal the annual table divided by 12. In theory, if an employee's pay stays the same all year, total monthly withholding should roughly match the annual tax due.
If the amount taken out falls short, the employer deducts the difference from the employee's final pay cycle, usually the December payroll. Where too much was taken out, the employee gets a refund through payroll. They don't have to wait on a return filed with the BIR. The employer absorbs the administrative work either way. The employee just sees a slightly different net pay figure in their final payslip of the year, and doesn't need to do anything themselves.
Several common situations can cause monthly withholding to differ from the true annual liability:
Doing tax Annualisation properly means going through each employee's full-year pay record before the last payroll of the year closes, not after. It generally runs in this order:
Begin by compiling each employee’s total compensation for the year. This should include basic salary, overtime pay, bonuses, commissions, taxable allowances, off-cycle payments, and any final pay processed within the same taxable year. For employees hired partway through the year, compensation and tax withheld by a previous employer should also be included, usually based on BIR Form 2316.
Once the compensation data has been gathered, the next step is to distinguish taxable income from non-taxable income. This includes properly accounting for statutory contributions, de minimis benefits, 13th-month pay and other benefits within the applicable exemption threshold, as well as other non-taxable items recognised under BIR regulations. Accurate classification is essential to ensure the employee’s taxable income is computed correctly.
After determining taxable income, calculate the employee’s total income tax liability for the full year using the applicable BIR annual withholding tax table. This establishes the amount of tax that should have been paid based on the employee’s actual annual earnings.
The annual tax due is then compared with the total tax already withheld from the employee’s pay across all payroll periods during the year. This reconciliation determines whether there is an underpayment, an overpayment, or no adjustment required.
If the total tax withheld is less than the employee’s actual tax liability, the shortfall is deducted through the final payroll run. If too much tax has been withheld, the excess must be refunded to the employee. This final adjustment ensures that the correct amount of income tax has been paid before the year closes.
Once the Annualisation process has been completed, the employer issues BIR Form 2316 to each employee. This document shows the employee’s total annual compensation, total tax withheld, and any final year-end adjustment. The employer must also file BIR Form 1604-C to report its annual withholding activities and support substituted filing for employees who qualify.
Accurate calculations are only part of the process. Your Annualisation figures must also match what has been reported to the BIR. Before closing the year, carry out the following checks.
Compare the total tax due in your monthly Payroll Registers with the amounts remitted through BIR Form 1601-C (Monthly Remittance Return of Income Taxes Withheld on Compensation). Investigate and resolve any differences, such as late adjustments, rounding issues or misposted entries, before you file your annual returns.
December usually carries the most adjustments, including year-end bonuses, 13th-month pay, refunds and deficiency collections. Itemise the amounts reported in your December 1601-C. Confirm that every salary-related item has been recorded and properly reflected for tax reporting.
Check that the totals for Gross Compensation, Non-Taxable Income and Tax Due match the corresponding figures in the Alphalist of Employees:
Gaps between your payroll records, 1601-C remittances and Alphalist submissions are among the most common triggers for BIR queries. Make sure all three agree.
Under RMC No. 61-2024, the BIR reminded taxpayers to use Version 7.3 of the Alphalist Data Entry and Validation Module. Taxpayers must also follow the updated file structures and naming conventions set out in the circular. Submissions that do not meet these formats may be rejected or flagged.
Once Annualisation is complete, make sure you:
Following these steps will help minimise discrepancies and keep your organisation fully aligned with BIR requirements.
Compliance with tax Annualisation is critical because the Bureau of Internal Revenue holds the employer, not the employee, accountable for any tax that has not been properly withheld, as well as for incorrect filings or missed deadlines relating to Form 1604-C.
The Annualisation process is detailed, time-sensitive, and unforgiving of errors. A single misclassified allowance, an outdated tax table, or a mismatch between payroll registers and tax returns can expose an organisation to penalties, tax assessments, and unnecessary compliance risk.
The task can be even more demanding for foreign employers and growing organisations, which must manage multiple payroll cycles, mid-year hires, and evolving regulations while continuing to run day-to-day operations.
Expert payroll support can significantly reduce this burden. Experienced and certified payroll professionals can help employers to:
As a withholding agent, your organisation is responsible for making sure every peso withheld from your employees' pay is accurate and properly reported. Proper Annualisation protects your business from future assessments. It also gives your people confidence that their taxes are handled correctly.
Our certified payroll specialists help local and foreign employers complete tax Annualisation accurately and on time.