Is a CBA Retroactive Pay Adjustment or Backpay Taxable in the Year Received or the Year Earned?

A CBA retroactive pay adjustment or backpay is taxable compensation income, and the BIR taxes it in the year the employee actually receives it — not the year(s) the increase was supposed to cover. When a new Collective Bargaining Agreement (CBA) is finally signed months or years after the old one expired, and the employer releases a lump sum covering the increase for every month it was retroactive to, that catch-up payment is ordinary wages under Revenue Regulations (RR) No. 2-98. The employer withholds on the full amount in the payroll period it is actually paid and folds it into that calendar year’s compensation for annualization — the same payment-year principle that governs regular salary, just applied to a much larger single payment.

The Alphalist of Employees module is in development. QAP, SAWT, RELIEF, and BIR Form 2307 are live today, free.

Why does the year of payment control, not the year earned? #

Compensation withholding in the Philippines runs on a payment-year basis: the employer withholds tax when compensation is actually or constructively paid, and that amount is reported as income for the calendar year it lands in, regardless of which earlier period it was meant to cover. This isn’t a special rule invented for CBA situations — it’s the ordinary mechanics of withholding tax on compensation under RR No. 2-98.

Section 2.78.1(A) of RR No. 2-98 defines what counts as compensation in the first place:

In general, the term “compensation” means all remuneration for services performed by an employee for his employer under an employer-employee relationship, unless specifically excluded by the Code.

A CBA retroactive pay adjustment fits squarely inside that definition — it is remuneration for services the employee already performed, now paid at the correct negotiated rate. Nothing in RR No. 2-98 carves out a different timing rule for a catch-up payment just because it corresponds to past pay periods; the employer’s withholding obligation attaches at the moment of payment, under the employer’s duty to withhold on wages paid under Section 79(A) of the National Internal Revenue Code (NIRC). The employer doesn’t go back and recompute 2025’s monthly BIR Form 1601-C filings to insert a slice of the retroactive amount into each of those earlier months — the entire lump sum is compensation for the month it is actually disbursed.

At year-end, the amount also feeds into that year’s annualized tax computation under RR No. 2-98’s year-end adjustment mechanism (Section 2.79(B)(5)(b)), which determines each employee’s true annual tax due based on everything actually paid to the employee during that taxable year — including a large one-time catch-up payment — not a reconstruction of what the employee would have owed had the raise been paid on time.

How does this compare to the RMC No. 39-2012 backwages rule? #

RMC No. 39-2012 and a CBA retroactive pay adjustment share the same underlying payment-year withholding logic, but they are different fact patterns, and only one of them comes with a BIR-sanctioned exception to spread the income across multiple years. RMC No. 39-2012 addresses backwages awarded to an illegally dismissed employee — someone already separated from the company — after that award is collected by garnishing the employer’s bank deposits or other funds through a labor dispute judgment. The circular states:

Garnishees of a judgment award in a labor dispute are constituted as withholding agents with the duty of deducting the corresponding Withholding Tax on wages due thereon in an amount equivalent to 5% of the portion of the judgment award representing the taxable backwages, allowances and benefits.

Two things make that scenario different from a CBA retroactive pay adjustment:

That last row matters. RMC No. 39-2012 is a narrow administrative concession built specifically around the mechanics of a garnished labor-dispute award — it does not say, and nothing in later BIR issuances found in researching this post says, that any delayed or retroactive compensation gets the same multi-year spreading treatment. A CBA retroactive pay adjustment paid directly by an employer, to a current employee, through ordinary payroll, falls back on the general payment-year rule: taxed in full in the year actually paid, with no spreading relief, unless the BIR issues a circular squarely addressing CBA retroactive pay the way it did for garnished backwages.

Is a CBA signing bonus taxed differently from the retroactive wage adjustment itself? #

A one-time CBA signing bonus and a retroactive wage-rate adjustment are not the same thing for tax purposes, even though both can arrive in the same payroll run once a new CBA is finally signed and ratified. The retroactive adjustment corrects an employee’s basic pay for past months to the new negotiated rate — it is ordinary wages, taxable in full from the first peso, just like a regular salary increase paid late, and it gets no bonus-style exemption of its own.

A separate, discrete CBA signing bonus is a different kind of payment, and it gets a narrow, specific exemption: Revenue Regulations No. 1-2015 added “benefits received by an official or employee by virtue of a Collective Bargaining Agreement (CBA)” together with productivity incentive schemes to the de minimis benefits list, exempt up to a combined ₱10,000 per employee per taxable year. That ₱10,000 allowance sits separately from, and in addition to, the ₱90,000 combined exemption for 13th month pay and other benefits under NIRC Section 32(B)(7)(e), as amended by the TRAIN Law (Republic Act No. 10963) — see Is 13th Month Pay Taxable? for how that separate ₱90,000 cap works.

Two practical points follow:

• A ₱5,000 CBA signing bonus, paid as a true one-off incentive rather than a wage correction, can be tax-exempt under the RR No. 1-2015 ₱10,000 CBA/productivity-incentive allowance (combined with any productivity bonus paid the same year).
• A ₱180,000 retroactive pay adjustment that simply brings 22 months of basic salary up to the new CBA rate is not a “benefit” in that sense at all — it is delayed wages, so neither the ₱10,000 CBA allowance nor the ₱90,000 other-benefits cap applies to it. It is withheld in full, the same way the salary itself would have been withheld if paid on time.

Worked example: a ₱180,000 retroactive pay adjustment paid in October 2026 #

When a new CBA is finally ratified well after the old one expired, the retroactive catch-up pay is typically released in a single payroll run — and because it is added whole to that one month’s taxable compensation, it can push the employee into a much higher withholding bracket for that month alone, even though the employee’s regular salary never changed brackets.

A unionized rank-and-file employee’s old CBA expired at the end of December 2024. Negotiations drag on, and the new CBA is finally signed in October 2026, retroactive to January 2025. The new agreement raises the employee’s basic monthly pay by ₱8,182, covering 22 months (January 2025 through October 2026):

The employer pays the ₱180,000 retroactive lump sum together with the employee’s regular October 2026 salary, in the same payroll run:

Without the retroactive pay, the employee’s October withholding would sit at roughly ₱1,862.55 — ordinary salary, ordinary bracket. Once the ₱180,000 catch-up payment is folded into that same month, taxable compensation jumps to ₱213,250, landing in a much higher bracket and pushing that single month’s withholding to roughly ₱47,516.57. The employee isn’t being taxed at a punitive “backpay rate” — the full amount is simply added to one month’s compensation and run through the same graduated table everyone’s regular salary uses, and a large one-time payment in a single period naturally lands in a higher bracket than if it had been paid ₱8,182 at a time across 22 separate months.

Does the 2025 portion of the retroactive pay get added to the 2025 BIR Form 2316? #

No — the entire ₱180,000 is reported as 2026 compensation, on the employee’s 2026 BIR Form 2316, because it was actually paid in October 2026, even though most of it corresponds to 2025 and early-2026 pay periods. The employer does not reopen 2025’s already-filed monthly BIR Form 1601-C returns or restate the employee’s 2025 BIR Form 2316 to insert a share of the retroactive amount into each earlier month. Doing so would contradict the payment-year principle this post opened with, and it would create a mismatch between what was actually remitted for 2025 (on 2025’s return) and what the employer now claims should have been remitted.

Instead, the ₱180,000 flows through 2026’s withholding and reporting cycle from end to end: withheld in the October 2026 BIR Form 1601-C, included in the employee’s cumulative 2026 compensation for the December year-end adjustment, and reflected on the employee’s 2026 BIR Form 2316 — the certificate that also feeds the employer’s annual alphalist. Keeping every employee’s cumulative-pay figures accurate through the year, including an irregular lump sum like this one, is exactly the kind of record-keeping gap that produces common 1604-C alphalist of employees errors at year-end if it isn’t tracked carefully when the payment is made.

Does the employee get any of the extra October withholding back? #

Possibly — the spike in October withholding is only a per-period effect, not a final tax bill, and the BIR’s year-end adjustment exists precisely to correct any over- or under-withholding once the employee’s full annual compensation for 2026 is actually known. If adding the ₱180,000 lump sum to October’s taxable compensation pushes that single month’s withholding above what the employee’s true annualized tax due for the year turns out to be, the excess is refunded through the November or December payroll, per the year-end adjustment mechanics under RR No. 2-98. See Year-End Withholding Tax Adjustment for how that reconciliation works across all twelve (or twenty-four) payroll periods in the year.

Frequently asked questions #

Is a CBA retroactive pay adjustment or backpay taxable? #

Yes. A retroactive pay adjustment paid under a newly signed Collective Bargaining Agreement (CBA) is compensation income — it is remuneration for services performed under an employer-employee relationship, which Section 2.78.1(A) of Revenue Regulations No. 2-98 defines as taxable compensation regardless of what the payment is called or when the services were actually rendered.

Is CBA retroactive pay taxed in the year it’s paid or the year it was earned? #

It is taxed in the year it is actually (or constructively) paid to the employee, not allocated back into the earlier years the increase covers. Philippine withholding tax on compensation runs on a payment-year basis — the employer withholds when compensation is paid, and that payment is added to the recipient’s income for the calendar year in which it lands, not the calendar year the underlying work was performed.

Does a CBA retroactive pay lump sum require amending the employee’s prior year’s BIR Form 2316? #

No. Because the payment is taxed in the year received, it belongs on the BIR Form 2316 for the year it was actually paid out, not on an amended BIR Form 2316 for an earlier year it happens to cover. The employer does not reopen or restate closed prior-year BIR Form 1601-C filings or BIR Form 2316 certificates to fit the retroactive amount into the years it nominally represents.

How is CBA retroactive pay different from the backwages covered by RMC No. 39-2012? #

They are different fact patterns that happen to share the same payment-year withholding principle. RMC No. 39-2012 covers backwages awarded to an illegally dismissed employee and collected through garnishment of the employer’s funds, and it grants a specific administrative concession allowing that award to be spread across the years it covers. A CBA retroactive pay adjustment is paid directly by the employer, through ordinary payroll, to a current employee under a negotiated agreement — a separate scenario that RMC No. 39-2012 does not purport to cover, so its multi-year spreading relief does not carry over by default.

Can a CBA signing bonus be tax-exempt even if the retroactive wage adjustment isn’t? #

Only to a limited degree, and only for a genuine bonus, not for the wage-rate catch-up itself. Revenue Regulations No. 1-2015 added a de minimis exemption of up to a combined ₱10,000 per employee per year for benefits received under a CBA together with productivity incentive schemes. A retroactive pay adjustment that simply corrects an employee’s basic pay to the new negotiated rate for past months worked is ordinary wages, not a CBA “benefit,” so it does not fall under that ₱10,000 allowance and is taxable in full.

Summary #

A CBA retroactive pay adjustment or backpay is taxable compensation, withheld and reported in the calendar year it is actually paid out — not spread back into the years the increase was meant to cover. That payment-year principle is the same one underlying RMC No. 39-2012’s treatment of illegal-dismissal backwages, but the two scenarios diverge on relief: backwages collected through garnishment get a BIR-sanctioned multi-year spreading concession, while a CBA retroactive adjustment paid directly by the employer through payroll does not, absent a comparable circular. A large lump sum can push a single payroll period into a much higher withholding bracket than the employee’s regular salary would suggest, but the BIR’s year-end adjustment exists to true up any resulting over- or under-withholding once the full year’s compensation is known. For the mechanics of that annual reconciliation and the certificate it produces, see Year-End Withholding Tax Adjustment and Is 13th Month Pay Taxable?; for how irregular lump-sum payments like this one need to be tracked accurately for year-end reporting, see Common 1604-C Alphalist of Employees Errors.