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PCBCalc.my / Why Your PCB Spikes in Bonus Month (And How the Bonus Tax Really Works)

EDITORIAL GUIDE / 2026

Why Your PCB Spikes in Bonus Month (And How the Bonus Tax Really Works)

Your PCB spikes in bonus month because LHDN treats a bonus as "additional remuneration", not as ordinary monthly salary. Your employer reworks your projected annual tax including the bonus, subtracts the tax on your salary alone, and charges the whole difference in the bonus month. So the bonus is taxed at your marginal rate on top of everything else — which is why the deduction looks much bigger than your normal monthly PCB, even though no special "bonus tax rate" exists.

Happy Malaysian employee receiving good news on her phone at work

Worked example: RM6,000 salary, RM6,000 bonus

Mei is single, earns RM6,000 a month, no TP1 reliefs beyond the automatic ones.

  • Without bonus: annual income RM72,000 − RM9,000 (personal) − RM4,000 (EPF) = RM59,000 chargeable. Tax: RM150 + RM450 + RM900 + RM990 = RM2,490 a year. Normal PCB: RM207.50 a month.
  • With a RM6,000 bonus: annual income RM78,000 − RM13,000 = RM65,000 chargeable. Tax: RM150 + RM450 + RM900 + (RM15,000 × 11% = RM1,650) = RM3,150 a year.
  • Bonus-month extra PCB: RM3,150 − RM2,490 = RM660, charged in the bonus month on top of the normal RM207.50 — so that month's total PCB is RM867.50.
  • EPF on the bonus is separate: 11% × RM6,000 = RM660 to EPF. It does not add extra EPF relief here because the RM4,000 annual EPF relief cap is already reached on salary alone.

Why the spike feels unfair (but is not an extra tax)

What you seeWhat is actually happening
PCB jumps several times overThe whole year's extra tax lands in one month instead of being spread over 12
Bonus seems "taxed more"It is taxed at your marginal rate (here 11%) on top of salary, not at a flat bonus rate
Take-home bonus looks smallEPF (11%) plus the extra PCB both come out of the same bonus
Next month PCB falls backNormal monthly PCB resumes, because the bonus is a one-off addition to the year's income

There is no separate bonus tax rate in Malaysia. A 13th-month salary is treated exactly the same way as any other bonus — both are additional remuneration.

Three things that are different about bonus month

  1. No SOCSO or EIS on the bonus. Both are excluded for bonus payments, so only EPF and PCB apply.
  2. EPF still applies. Employee EPF at 11% is deducted from the bonus, and the employer contributes on top.
  3. Your final tax does not change because of timing. The spike is timing, not extra tax: at e-Filing, your total tax is computed on total income including the bonus, and any over-deduction is refunded.

How to soften the spike (legally)

  • Submit TP1 reliefs before bonus month: lower chargeable income means a lower additional-remuneration PCB.
  • If you pay monthly zakat through salary, it reduces PCB ringgit-for-ringgit, including in bonus month.
  • Plan for it: when you hear the bonus amount, run the site's bonus tool first so the net figure is no surprise.
  • Do not ask payroll to "spread" the bonus PCB unless your employer offers a legitimate arrangement — the MTD rules charge it in the month the bonus is paid.

Internal links

FAQs

Q: Is there a special bonus tax rate?
A: No. The bonus is added to annual income and taxed at your marginal rate.

Q: Why is my bonus PCB higher than 11%?
A: Because it is not 11% of anything — it is the difference between two annual tax figures, which depends on your bracket.

Q: Does a smaller bonus mean a smaller spike?
A: Yes, roughly in proportion — but if it pushes you into a higher bracket, the marginal part is taxed at that higher rate.

Q: Is SOCSO charged on bonuses?
A: No. Bonuses are excluded from SOCSO and EIS wages.

Q: Will I get any of the bonus PCB back?
A: Possibly, at e-Filing, if your total PCB for the year exceeds your final tax after all reliefs.

Q: Does overtime spike PCB the same way?
A: Overtime is normal remuneration, not additional remuneration, so it is annualised differently — but a large overtime month still raises projected annual income and PCB.

Q: Should I refuse a bonus to avoid tax?
A: No — you still keep most of it after EPF and PCB, and refusing income to avoid tax leaves you worse off.

Not tax advice.