Monthly vs Annual Salary Tax: How Withholding Works
The slabs are annual, the deductions are monthly
Pakistan's salary tax slabs are defined on an annual basis, but tax is collected month by month through withholding by your employer. Once you see how the annual figure becomes a monthly deduction, your 2026-27 payslip makes a lot more sense.
The basic mechanism
Under the Income Tax Ordinance 2001, the employer estimates your projected annual taxable salary, calculates the full-year tax using the official slabs, and then divides that amount across the remaining months of the tax year (which runs July to June). The result is your monthly withholding.
A worked example
Imran earns Rs 200,000 a month, or Rs 2,400,000 a year. Using the 2026-27 slabs, his annual tax is Rs 116,000 plus 20% of the Rs 200,000 above Rs 2,200,000, which is Rs 40,000, for a total of Rs 156,000. Divided over 12 months, that is Rs 13,000 deducted each month. By June, exactly Rs 156,000 has been withheld.
| Step | Figure |
|---|---|
| Annual taxable salary | Rs 2,400,000 |
| Annual tax (2026-27 slabs) | Rs 156,000 |
| Monthly withholding | Rs 13,000 |
Why mid-year changes trigger a recalculation
If your salary rises mid-year, gets a bonus, or you join part-way through, the annual projection changes. The employer works out the full-year tax again and spreads the tax still owed over the months left. The total comes out right by year-end, even if the monthly amounts change along the way.
The monthly-vs-annual nuance elsewhere
This annual-versus-monthly logic shows up beyond salaries. For example, in business withholding under section 153, companies pay vendors monthly, but the exemption thresholds (such as Rs 75,000 for goods and Rs 30,000 for services per vendor) are annual aggregates. Once yearly purchases from a vendor cross the threshold, withholding applies. The principle is the same: rates and thresholds are annual, but money moves monthly.
Common confusion to avoid
- Your monthly deduction is not 1/12 of a single slab rate; it is 1/12 of your full marginal annual tax.
- A bonus month may show a higher deduction as the projection updates.
- Joining mid-year does not mean you pay a full year's tax; only your actual months count.
How Zaffre HRM keeps it accurate
Zaffre HRM, part of the Zaffre Axon platform, projects each employee's annual salary, applies the FBR 2026-27 slabs and spreads withholding evenly across the year. When pay changes, Zaffre HRM re-projects straight away and adjusts the remaining months so the annual total stays exact. Because slabs are configured centrally on Zaffreaxon, every payslip adds up by June.
References: Income Tax Ordinance 2001 (withholding on salary, section 153 thresholds); Finance Act 2026 (Federal Budget 2026-27); FBR.
Get monthly withholding right
Book a demo with Zaffre Tech to see how Zaffre HRM turns annual tax into accurate monthly withholding.