Withholding Tax Guide for Salaried Individuals

Last reviewed: October 8, 2026

How monthly withholding is calculated

Under Section 149 of the Income Tax Ordinance 2001, employers estimate your total annual taxable salary at the start of (or during) the tax year, compute the annual tax due using that year's slabs, and then withhold 1/12th of that amount from each month's pay. If your salary changes mid-year (a raise, bonus, or new allowance), the employer is supposed to re-estimate and adjust the remaining months' withholding accordingly — which is why your take-home tax deduction can shift after a raise, sometimes by more than the raise itself feels like it should.

Worked example — a mid-year raise

Say you earned Rs. 150,000/month for the first half of the tax year, then got raised to Rs. 200,000/month for the second half. Your real annual income is Rs. 2,100,000, with an actual annual tax liability of PKR 1.05 Lac under FY 2026-27 slabs.

If your employer's payroll system never re-estimates and keeps withholding based on the original Rs. 150,000/month assumption (annual tax of PKR 72,000, withheld at PKR 6,000/month for all 12 months), only PKR 72,000 gets withheld over the year — leaving a shortfall of roughly PKR 33,000 that you'd owe when you file your return. This is exactly why a correctly functioning payroll system should adjust withholding after a raise, and why it's worth checking your payslip after any salary change rather than assuming it's been handled.

What counts as taxable salary

Taxable salary generally includes basic pay, all cash allowances (house rent, utilities, conveyance where not specifically exempt), and bonuses. It excludes amounts specifically exempted by law, most notably medical allowance up to 10% of basic salary — see our tax-saving guide for other exemptions employers may already be applying.

How to verify your employer got it right

1. Take your annual gross salary (or monthly × 12) and any medical allowance from your payslip.
2. Run both through the calculator for the current tax year to get the annual and monthly tax figures.
3. Compare the monthly figure to the actual deduction on your payslip. Small differences (a few hundred rupees) are normal due to rounding or timing of a mid-year adjustment; large, consistent differences are worth raising with HR/Finance.

What if too much tax was withheld?

If your employer over-withheld during the year — common when bonuses are taxed at the point they're paid rather than annualized — the excess is reconciled when you file your annual return. Any overpayment becomes a refund claim; underpayment becomes additional tax payable at filing. This is one more reason filing matters even when your employer already deducts tax monthly: it's the only place the final reconciliation happens.

Multiple employers in one year

If you changed jobs during the tax year, each employer withholds tax as if it were your only income source, which usually under-withholds relative to your combined annual income once both salaries are added together. Declare all employers' income when filing to avoid a tax shortfall notice from FBR.

Your employer's legal responsibility

Employers aren't just doing you a favor by withholding tax correctly — it's a statutory obligation under Section 149, and they're liable if they fail to withhold and deposit the correct amount. If you've raised a withholding discrepancy with HR/Finance and it isn't corrected, it's still ultimately your responsibility to settle any shortfall when you file, since the return reconciles whatever was actually withheld against what was actually owed — regardless of whose error caused the gap.

Frequently asked

Can I ask my employer to withhold more than required?

In practice this isn't a standard feature of most payroll systems — withholding is generally calculated directly from the formula, not adjustable on request. If you want to avoid a lump-sum bill at filing time (for example because of freelance or rental income on top of your salary), it's more practical to set aside the estimated extra amount yourself and pay it at filing rather than trying to over-withhold through payroll.

Does withholding tax apply to provident fund or gratuity payouts?

Treatment of retirement benefits like provident fund and gratuity payouts follows separate exemption rules and thresholds under the Income Tax Ordinance, distinct from regular monthly salary withholding. If you're receiving one of these as a lump sum, it's worth checking with your HR department or a tax practitioner on the specific exemption that applies rather than assuming it's taxed like regular salary.

What if I'm salaried but also have freelance income?

Your employer only withholds tax on your salary — they have no visibility into freelance or other income. That additional income still needs to be declared and taxed when you file, and depending on the amount, you may also owe advance tax during the year rather than settling it all at once in September. This guide and calculator only cover salary income; freelance/business income is taxed under separate rules.