PAYE Tax Calculator: How to Calculate Staff Income Tax in Nigeria (2025 Guide)

If you employ people in Nigeria, you are legally required to calculate, deduct, and remit Pay As You Earn (PAYE) income tax on their behalf every month. Getting this wrong — even accidentally — exposes your business to tax penalties, back payments, and interest charges from the State Internal Revenue Service (SIRS).

This guide is a practical, step-by-step PAYE calculator walkthrough for business owners, HR managers, and payroll administrators in Nigeria. We'll cover the 2025 tax bands, worked examples, and how to automate the process.

What Is PAYE Tax?

PAYE — Pay As You Earn — is the personal income tax deducted directly from an employee's salary each month. It is governed by the Personal Income Tax Act (PITA) and administered by State Internal Revenue Services (SIRS) across Nigeria's 36 states and FCT.

As an employer, you act as a collection agent — you withhold the tax from your employees' gross pay and remit it to the appropriate SIRS by the 10th of the following month.

What Counts as Taxable Income?

PAYE applies to all income from employment, including:

• Basic salary
• Housing allowance
• Transport allowance
• Meal and utility allowances
• Bonuses, commissions, and performance pay
• Benefits in kind (valued at market rate)

Some income items are exempt or partially exempt, such as gratuities, pension payouts, and approved disability-related payments.

Step-by-Step PAYE Calculation for 2025

Step 1: Determine Annual Gross Income

Multiply the employee's monthly gross salary by 12.

Example: ₦250,000/month × 12 = ₦3,000,000 annual gross income

Step 2: Calculate Allowable Deductions

Before applying the tax bands, subtract the following from gross income:

• Consolidated Relief Allowance (CRA): The higher of ₦200,000 or 1% of gross income, PLUS 20% of gross income
  Example: 1% of ₦3,000,000 = ₦30,000 → Use ₦200,000 (higher) + 20% of ₦3,000,000 = ₦600,000 → CRA = ₦800,000
• Pension (Employee Contribution): 8% of monthly emolument × 12
  Example: Assuming emolument = ₦2,200,000 → Pension = 8% × ₦2,200,000 = ₦176,000
• NHF Contribution: 2.5% of annual basic salary
  Example: Assuming basic = ₦1,500,000 → NHF = 2.5% × ₦1,500,000 = ₦37,500
• Life Insurance Premiums (if applicable)

Total Deductions = ₦800,000 + ₦176,000 + ₦37,500 = ₦1,013,500

Step 3: Calculate Taxable Income

Taxable Income = Annual Gross Income − Total Deductions

Example: ₦3,000,000 − ₦1,013,500 = ₦1,986,500

Step 4: Apply the 2025 Tax Bands

Apply the progressive tax rates to the taxable income in layers:

Total Annual PAYE = ₦21,000 + ₦33,000 + ₦75,000 + ₦95,000 + ₦81,165 = ₦305,165

Step 5: Convert to Monthly PAYE

Monthly PAYE = ₦305,165 ÷ 12 = ₦25,430

This ₦25,430 is deducted from the employee's monthly gross salary and remitted to SIRS.

The Minimum Tax Rule

If an employee's taxable income falls below ₦800,000 per year (after reliefs), the normal progressive calculation may not apply. In such cases, the minimum tax is:

Minimum Tax = 1% of Annual Gross Income

This is designed to ensure that all earning employees contribute something, even those with low incomes after reliefs.

Worked Example: Junior Staff (₦80,000/month)

• Annual Gross: ₦960,000
• CRA: ₦200,000 + 20% × ₦960,000 = ₦200,000 + ₦192,000 = ₦392,000
• Pension (assume emolument = ₦720,000): 8% × ₦720,000 = ₦57,600
• NHF (assume basic = ₦480,000): 2.5% × ₦480,000 = ₦12,000
• Total Deductions: ₦461,600
• Taxable Income: ₦960,000 − ₦461,600 = ₦498,400
• Annual PAYE: 7% × ₦300,000 = ₦21,000 + 11% × ₦198,400 = ₦21,824 → ₦42,824
• Monthly PAYE: ₦42,824 ÷ 12 = ₦3,569

Common PAYE Mistakes to Avoid

• Using gross salary instead of taxable income — The tax bands apply to taxable income after reliefs, not gross salary.
• Forgetting NHF or pension deductions — These reduce taxable income and must be factored in.
• Applying the wrong state's rules — SIRS is state-administered; ensure you're remitting to the correct state based on where the employee resides or works.
• Skipping remittance months — Even if salaries are delayed, the obligation to remit PAYE doesn't pause. Late remittances attract 10% penalty plus interest.

Automate PAYE Calculation With Payroll Software

Manual PAYE calculation across a team of 10, 20, or 50 employees is error-prone and time-consuming. Modern payroll software handles it automatically — you input each employee's compensation structure once, and the system calculates PAYE, pension, and NHF every month.

Easeinbiz's built-in payroll module uses Nigeria's current NTA tax bands to automatically compute:

• Monthly PAYE per employee
• Annual PAYE projections
• Pension deductions (employee + employer)
• NHF contributions
• Net salary per employee ready for bank transfer

Run your entire payroll in minutes — not hours. Get a clear breakdown for every employee, and generate payslips automatically.

Stop calculating PAYE by hand. Let Easeinbiz handle your payroll calculations automatically — accurate, compliant, and built for Nigerian businesses.