Payroll guide

How salary tax is calculated in Pakistan

Salary tax in Pakistan starts with annual taxable salary. Monthly tax is usually the annual tax estimate divided into monthly payroll deductions.

Step 1: Convert salary to annual income

Monthly salary is multiplied by 12. Taxable bonus, arrears, and allowances may be added if they are part of taxable salary.

Step 2: Apply the annual slab

The relevant tax-year slab applies to annual taxable income. The formula may include fixed tax plus a percentage above a threshold.

Step 3: Estimate monthly deduction

After annual tax is calculated, employers normally spread withholding across payroll months. If the year has already started, payroll may divide the remaining tax across the remaining months instead of simply using annual tax divided by 12.

Why calculator and payroll can differ

A public calculator gives a clean estimate from the slab formula. Payroll systems may also consider previous deductions, taxable benefits, provident fund treatment, arrears, late salary changes, and employer-specific rounding rules. Use the calculator as a planning tool, then compare it with your salary certificate or IRIS records before filing.

Common reasons monthly tax changes

• Salary increment during the year.
• Taxable bonus or arrears.
• Incorrect opening payroll estimate.
• Finance Act changes or employer adjustment.
• Correction of deductions in the final quarter of the tax year.

Try the current Pakistan salary tax calculator for a quick estimate.