Guide

What is PCB? The deduction on your payslip you cannot opt out of

Open almost any Malaysian payslip and you will find a line item that shrinks your pay before it arrives: PCB. It is not a penalty, not an employer charge, and not the same thing as your annual tax bill. Understanding it makes budgeting — and tax season — far less stressful.

The Malay words behind the acronym

PCB stands for Potongan Cukai Bulanan, which translates literally as "monthly tax deduction". It is the mechanism through which the Inland Revenue Board of Malaysia — LHDN, or Lembaga Hasil Dalam Negeri — collects your income tax in instalments throughout the year, instead of asking you for one large sum in April. Your employer withholds it from your salary and remits it to LHDN on your behalf. You never see most of your tax as a lump sum because PCB spreads it across twelve paycheques.

What actually drives your PCB number

PCB is not simply your tax rate times your salary. The deduction is computed from your chargeable income — your annual gross pay minus every relief you are entitled to claim. The major reliefs that reduce chargeable income include the individual relief (RM9,000 for most residents), a spouse relief (RM4,000 where the spouse has no income), child reliefs (RM2,000 per child), your own EPF contributions (capped at RM4,000), and life insurance and education reliefs within their own caps. Two people earning identical salaries can have very different PCB if one has three children and the other does not.

Once chargeable income is known, the resident progressive tax rates apply: income is taxed slice by slice, from 0% on the first RM5,000 up to 30% at the very top. The computed annual tax is then divided by twelve, with adjustments prescribed by LHDN's computerised Monthly Tax Deduction (MTD) formula, and rounded to the nearest 5 sen. That final number is what appears on your payslip every month.

Why your PCB changes mid-year

Three common triggers. First, a raise: higher gross pay means higher chargeable income, so the employer's system recalculates. Second, a change in personal status — marriage or a new child adds reliefs and lowers PCB, which is why LHDN asks you to update your records via form CP204 or through your employer's payroll. Third, a second job: if you hold more than one job, each employer deducts PCB independently, and the combined deduction often under-collects, leaving a bill at filing time. Many accountants recommend the higher earner claim fewer reliefs so the deduction runs closer to the true liability.

PCB is an estimate; filing is the truth

Here is the mental model that matters: PCB is a good-faith estimate of your annual tax, collected in advance. When you file your income tax return (Form BE or B for individuals) the following year, you compute your actual liability with all reliefs, any additional income streams, and any other taxes already paid. If PCB over-collected, LHDN refunds you. If it under-collected, you pay the difference — and if the shortfall is large and repeated, LHDN can require a higher deduction or impose penalties on underpaid tax. A refund is not a bonus; it is your own money coming back because too much was withheld. A small refund is a healthier target than a large one, because a large refund means you gave the government an interest-free loan all year.

Common misconceptions

"PCB is my total tax." No — it is a withholding. Your final tax is what the return says. "If I don't claim reliefs my employer still deducts the same." Wrong — reliefs directly lower the chargeable income your PCB is computed on, so filing your relief updates with payroll matters. "Bonus is taxed separately at a flat rate." Also wrong in the general case — a bonus is added to your annual employment income and pushes you up the progressive scale, which is why the effective tax on a bonus is usually higher than the rate on your monthly payslip.

Where to go next

To see a quick estimate of your own PCB from gross pay and reliefs, use the PCB estimator, or the fuller take-home calculator which shows the whole deduction stack. For the official computation, the authoritative source is LHDN's own PCB calculator and the published MTD tables at the official LHDN portal. And for the companion question — what shows up at year-end — read the guide on PCB versus the EA form.

This guide is general information, not tax advice. PCB rules, relief amounts and tax bands change with each Budget. Verify current figures with LHDN (hasil.gov.my) or a licensed tax agent.