Preparing Payroll for December: A Year-End Plan

December is the shortest working month of the payroll year and the one carrying the most obligations. Between the 13th month pay deadline, a compressed cutoff, holiday premiums and the annualized withholding computation, a lot of teams spend three weeks doing work that should have been spread over six. Almost none of that work actually has to happen in December. Here is how to sequence it in November instead.

Freeze and clean the master file first

Nearly every December problem is a November data problem that nobody looked at. Start the month by reconciling the payroll master file against the actual headcount: hire dates, separation dates, employment status, TINs, and the full basic pay history for each employee — not just the rate they are on today.

That last item matters more this year than most. Wage Order No. NCR-26 raised the NCR daily minimum wage from P645.00 to P695.00 for non-agriculture effective 18 July 2025, so any Metro Manila employer sitting at or near the floor now has two distinct rate periods inside one calendar year. A 13th month computation that quietly uses only the December rate will be wrong for every one of those employees.

Mid-year hires need one more thing: the BIR Form 2316 from their previous employer. Chasing those in November is an email. Chasing them on 18 December, while the annualization is already running, is a crisis.

Compute 13th month pay in November, pay it on your own schedule

Presidential Decree No. 851 requires 13th month pay to be paid not later than December 24 of every year, and its implementing rules define the benefit as one-twelfth of the basic salary an employee earned within the calendar year. Memorandum Order No. 28 removed the original P1,000 monthly salary ceiling back in 1986, so every rank-and-file employee is covered regardless of what they earn.

Two details cause most of the recomputations. First, the benefit accrues across the calendar year, so an employee who joined in May or resigned in August still earns a pro-rated amount — and separated employees are the easiest to miss, because they are no longer on the active roster. Second, the base is basic salary, so what your payroll treats as basic and what it treats as an allowance or a premium has to be settled before the run rather than argued about after it.

Run it as a draft in November. In ERPat's Compensation module, earnings, deductions and allowances already sit alongside the attendance data that produced them, so a trial computation gives you a real peso total to fund weeks ahead of the deadline.

Test the P90,000 ceiling before anything is final

13th month pay and other benefits are excluded from gross income and exempt from withholding tax up to a combined total of P90,000 per year. Anything above that is taxable compensation and must be withheld on. The word doing the work in that sentence is combined: the cap covers the whole bucket of 13th month pay and other benefits for the year, not the 13th month pay by itself.

So the November test is a summation, not a spot check. Pull every benefit falling in that category across all twelve months for each employee, add the 13th month figure you just computed, and flag anyone who crosses the line. For most rank-and-file staff, nothing happens. For managers, long-tenured employees and anyone who received more than one bonus during the year, the excess lands in the December payroll as additional taxable compensation — and an employee who first learns about that from a 24 December payslip will not take it well.

Annualize withholding while a payroll still remains

The annualized computation compares each employee's total tax due for the year against the tax actually withheld since January, then settles the difference. Over-withholding is refunded to the employee; under-withholding is collected. Either way it has to happen inside a payroll run, and December is the last one you have.

This is where the earlier tasks pay off. The cleaned master file gives you complete year-to-date compensation, previous-employer figures included, and the P90,000 test tells you whose taxable base just grew. Employees whose pay moved mid-year — a promotion, a wage order adjustment, a long unpaid leave — are the ones whose withholding has drifted furthest from the annual schedule.

Then the deadlines arrive quickly. BIR Form 2316 must be furnished to each employee on or before January 31, and BIR Form 1604-C with the alphalists is due the same day. For employees qualified for substituted filing, the duplicate 2316s and the certified list go to the BIR not later than February 28. None of that is December work, but all of it depends on December being right.

Reconcile the mandatory contributions month by month

Contribution errors compound quietly, so walk the year one month at a time per agency and confirm that what was deducted, what was remitted and what the agency posted all agree.

For 2025 the SSS rate is 15% of the monthly salary credit — 10% employer, 5% employee — with the MSC running from P5,000 to P35,000, and business employers remit by the last day of the month following the applicable month. PhilHealth stays at 5.0%, shared equally by employer and employee, on a monthly basic salary floor of P10,000 and ceiling of P100,000; note that the premium is computed on monthly basic salary only, so December's 13th month pay and bonuses do not change it. Pag-IBIG has been computed on a maximum fund salary of P10,000 since February 2024, for a maximum of P400 a month, and the employer's 2% counterpart cannot legally be deducted from the employee.

Late remittance is expensive by design: Pag-IBIG carries a penalty of 3% per month under RA 9679, and missed PhilHealth employer contributions must be settled with interest compounded monthly of at least 3%. ERPat's Finance module covers the payments and reconciliation side, but the month-by-month comparison is still a judgment someone has to make.

Settle leave balances and lock the calendar

Article 95 of the Labor Code entitles an employee with at least one year of service to five days of paid service incentive leave a year, with the familiar exclusions: employees already enjoying the benefit, those with vacation leave with pay of at least five days, and establishments regularly employing fewer than ten employees. Under the Omnibus Rules, service incentive leave not used or exhausted at the end of the year is commutable to its money equivalent. Decide in November which run carries that conversion, because it is real cash and it competes with the 13th month funding.

The December calendar itself deserves an hour. Under Article 94, a worker is entitled to the regular daily wage on a regular holiday and to twice the regular rate for work actually performed on one, which affects both the cutoff and the amount for anyone scheduled to work. While you are there, build next year's calendar too — Proclamation No. 1006, signed 03 September 2025, already declares the 2026 regular holidays and special non-working days, and DOLE Labor Advisory No. 12, series of 2025, already sets the 2026 pay rules.

What a calm December actually looks like

None of this is difficult work. It is simply work with a hard deadline attached, and December supplies far too few working days to absorb all of it at once. A November spent cleaning records, drafting the 13th month computation, testing the P90,000 ceiling and reconciling twelve months of contributions turns December into a review instead of a rescue — and leaves the January and February filings as a matter of exporting what you already verified, rather than reconstructing it under pressure.