What Is PCB?

If you've ever compared your gross salary to what actually lands in your bank account, you've already met PCB. Short for Potongan Cukai Berjadual, it's the monthly amount your employer withholds from your pay and forwards to LHDN as an advance instalment of your annual income tax. Alongside EPF, SOCSO, and EIS, it's one of the statutory deductions listed on every payslip — yet most employees never learn exactly how the figure is worked out, why it changes from month to month, or what to do when it looks wrong.

This guide breaks down what PCB is, who has to pay it, how LHDN calculates the amount, and the practical steps to take if your deduction doesn't match your circumstances.

What Does PCB Stand For?

PCB stands for Potongan Cukai Berjadual, which translates to "Scheduled Tax Deduction" — though most payslips and HR systems simply call it the Monthly Tax Deduction, or MTD. Both terms describe the same mechanism: your employer estimates your annual tax liability, spreads it across the months remaining in the year, and deducts a portion from each salary payment.

The deducted amount is remitted directly to Lembaga Hasil Dalam Negeri (LHDN), the Inland Revenue Board, which administers income tax collection nationwide. Employers are required to submit PCB payments by the 15th of the following month, and late remittance can trigger penalties for the business — not the employee.

How LHDN Calculates Your PCB

PCB is not simply your estimated annual tax divided by 12. LHDN's calculation method, published each year in its official Specification for Monthly Tax Deduction, follows a consistent set of steps:

• Start with a gross salary. Your employer uses your monthly gross pay, including fixed allowances, as the base figure.
• Deduct EPF contributions. The standard employee EPF rate is 11%, which reduces your taxable income before tax is applied.
• Apply reliefs. A standard individual relief of RM9,000 is factored in automatically, along with any additional reliefs you've declared via a TP1 form.
• Project annual income. Your monthly figure is extrapolated to estimate your full-year chargeable income.
• Apply the tax bracket. Malaysia's progressive tax rates for residents range from 0% on the first RM5,000 of chargeable income up to 30% on amounts above RM2 million, with several bands in between.
• Divide by remaining months. The projected annual tax, minus any PCB already paid that year, is spread across the months left in the year — which is why a mid-year bonus can cause a noticeable spike in the following month's deduction.

You don't need to run these calculations yourself. If you'd like to check your employer's figures, LHDN provides an official calculator through its MyTax portal.

Who Needs to Pay PCB?

Not every employee has tax withheld each month. Employers begin deducting once your estimated chargeable income crosses a set threshold — broadly around RM2,851 a month for single taxpayers and RM3,851 a month for married taxpayers, reflecting the additional relief married employees are entitled to claim. Below these levels, your projected annual tax works out to zero once standard reliefs are applied, so there's simply nothing to withhold.

Self-employed individuals, freelancers, and business owners sit outside this system entirely. They settle their tax through separate instalment schemes such as CP500 rather than through an employer's payroll.

Sample PCB Deduction on a Payslip

Here's a simplified illustration of how PCB might appear for someone earning RM5,000 a month with no dependants and only the standard reliefs applied:

These figures are illustrative only. Your actual PCB depends on your marital status, number of children, declared reliefs, and any additional income your employer knows about. SOCSO and EIS amounts also vary by wage band — check PERKESO's contribution tables for the exact figures at your salary level.

The progressive structure matters more than most people realise. A married employee earning RM8,000 a month, for instance, sits in a higher tax bracket even after claiming spouse relief — their annual chargeable income of roughly RM72,000 pushes part of their earnings into the 19% band, producing a monthly PCB in the region of RM340 to RM350 rather than the RM97 in the example above. Doubling your salary doesn't just double your deduction; it can shift a meaningful portion of your income into a steeper bracket.

Is PCB Your Final Tax Payment?

No — PCB is only an advance instalment based on estimates, not your final tax bill. LHDN calculates your actual liability when you submit your annual return, and the difference between what you paid through PCB and what you actually owe is settled at that point.

Your employer issues an EA form, usually by the end of February, summarising your total salary and the PCB deducted over the year. You'll use these figures to complete your Form BE if your income is from employment only.

Two outcomes are possible once you file:

• Refund: if your PCB deductions exceeded your final tax liability — common when you've claimed reliefs your employer didn't account for — LHDN refunds the difference after your return is processed.
• Balance payable: if PCB fell short, for example because of a bonus or freelance income your employer never knew about, you'll need to settle the shortfall by the filing deadline.

Common Reasons Your PCB May Be Too High or Too Low

• Bonuses and irregular income: a year-end bonus pushes your projected annual income higher for the months remaining, which can trigger a noticeably larger deduction right when the bonus lands.
• Mid-year job changes: a new employer only sees your salary from your start date onward, so your monthly deduction may not reflect your full-year income unless you submit a TP3 form.
• Unclaimed tax reliefs: lifestyle, medical, or insurance reliefs your employer isn't aware of mean your withholding is calculated on a higher taxable base than necessary — money you'll only see back after filing.
• Change in marital or family status: getting married or having a child increases your entitled reliefs, but the change won't be reflected in your monthly deduction until you update your paperwork.
• Multiple income sources: freelance work, rental income, or a side business isn't visible to your employer, so the monthly deduction only ever covers tax on your employment income.

TP1 vs TP3: Which Form Do You Need?

Without a TP1 on file, employers must apply the highest deduction category by default — meaning a larger monthly PCB and typically a bigger refund at filing time rather than a smaller deduction throughout the year.

Do You Still Need to File Your Taxes If PCB Is Deducted?

Yes. Having PCB deducted doesn't exempt you from filing. Malaysian residents whose annual employment income exceeds RM37,333 after EPF deductions are required to submit Form BE, regardless of how much tax was already withheld.

Filing lets you claim reliefs that can only be applied through your annual return, declare income from other sources, and trigger any refund you're owed. Form BE is due by 30 April for manual submission, with e-Filing through MyTax typically accepted until 15 May. Missing the deadline can mean a 10% penalty on any unpaid tax, rising by a further 5% if it's still outstanding after 60 days, on top of potential fines under the Income Tax Act.

What to Do If You Think Your PCB Is Wrong

1. Check your relief declarations. If your circumstances have changed since you started your job — marriage, a new child, or new medical or lifestyle expenses — submit an updated TP1 form to your HR or payroll department so the deduction can be recalculated.
2. Confirm your TP3 was submitted. If you switched jobs mid-year, make sure your new employer received your previous income and tax details; without it, they can only estimate based on partial-year figures.
3. Raise it with payroll. A significant mismatch could simply be a processing error on the employer's side — HR or payroll can review the calculation and correct it going forward.
4. Let your annual return settle it. If the tax year is nearly over, it's often simpler to file your Form BE and resolve any overpayment or shortfall then, since that's where everything is reconciled anyway.

Key Takeaways

PCB keeps your income tax manageable by spreading it across the year instead of leaving you with one large bill. Amounts in this guide are shown in Malaysian ringgit (RM) and are for illustration only — but the underlying principle holds for every payslip: PCB is an advance, not a final answer. Keep your TP1 and TP3 forms up to date, hold on to your EA form, and file your annual return on time to make sure the numbers actually reconcile in your favour.