How to Calculate Your Personal Income Tax in Nigeria (Employees Guide for 2026)
Understanding how personal income tax is calculated in Nigeria is one of the most important financial skills every employee should have in 2026. Many workers still believe tax is deducted from their full salary, which is incorrect — and often leads to unnecessary panic.
This guide breaks down, step by step, how PAYE tax works in Nigeria, what chargeable income means, the new tax bands for 2026, and how to calculate your monthly tax correctly using real examples.
Part One: What You Are Actually Taxed On (Chargeable Income Explained)
You are NOT taxed on your gross salary.
You are taxed on your chargeable income.
What Is Chargeable Income?
Chargeable income = Gross income − Allowable deductions
This is the foundation of Nigeria’s PAYE (Pay As You Earn) tax system.
Allowable Deductions You Can Remove Before Tax
Before tax is calculated, the law allows you to deduct certain items from your salary, including:
- Pension contributions
- NHF (National Housing Fund) contributions
- NHIS (Health insurance) contributions
- Life insurance premiums
- Rent relief – 20% of rent paid (capped at ₦500,000)
If these are not removed before tax, you are being over-taxed.
Example: Calculating Chargeable Income
- Gross annual salary: ₦3,000,000
- Pension contribution: ₦200,000
- Rent relief: ₦300,000
Chargeable income = ₦3,000,000 − ₦200,000 − ₦300,000 = ₦2,500,000
₦2,500,000 is what tax should be calculated on — not ₦3,000,000.
Part Two: Personal Income Tax Bands in Nigeria (2026)
Nigeria uses a progressive tax system. This means different portions of your income are taxed at different rates, not all at once.
New Tax Bands Going Forward
- First ₦800,000 → 0%
- Next ₦2,200,000 → 15%
- Next ₦9,000,000 → 18%
- Next ₦13,000,000 → 21%
- Next ₦25,000,000 → 23%
- Above ₦50,000,000 → 25%
Only the amount that falls within each band is taxed at that rate.
Part Three: Step-by-Step Tax Calculation Examples
Important: All examples below use annual chargeable income, not gross salary.
Example 1: Annual Chargeable Income of ₦1,000,000
- First ₦800,000 at 0% → ₦0
- Remaining ₦200,000 at 15% → ₦30,000
Total annual tax = ₦30,000
Monthly tax:
₦30,000 ÷ 12 = ₦2,500 per month
Before 2026:
₦54,000 annually → ₦4,500 monthly
Example 2: Annual Chargeable Income of ₦2,500,000
- First ₦800,000 at 0% → ₦0
- Remaining ₦1,700,000 at 15% → ₦255,000
Total annual tax = ₦255,000
Monthly tax:
₦255,000 ÷ 12 = ₦21,250 per month
Before 2026:
₦266,000 annually → ₦22,167 monthly
Example 3: Annual Chargeable Income of ₦5,000,000
- First ₦800,000 at 0% → ₦0
- Next ₦2,200,000 at 15% → ₦330,000
- Remaining ₦2,000,000 at 18% → ₦360,000
Total annual tax = ₦690,000
Monthly tax:
₦690,000 ÷ 12 = ₦57,500 per month
Before 2026:
₦704,000 annually → ₦58,667 monthly
Part Four: Common Tax Mistake Nigerians Make (And Why It’s Wrong)
Many people make this error:
“My income is ₦6 million, and the 18% band applies, so I’ll pay 18% of ₦6 million.”
Wrong.
Nigeria’s tax system is progressive, not flat.
You do not apply one tax rate to your entire income.
You split the income across bands, taxing each portion separately.
Failing to understand this leads to:
- Incorrect calculations
- False claims of over-taxation
- Unnecessary anger at employers or tax authorities
Old vs New Tax Regime: Which Is Better for Employees?
For low- and middle-income earners, the new tax structure is generally better, especially because:
- The ₦800,000 tax-free threshold protects low earners
- Monthly PAYE deductions are lower in most examples
- Inflation pressures are partially acknowledged
However, the real benefit depends on:
- Whether your employer applies deductions correctly
- Whether your chargeable income is calculated properly
Final Thoughts: Know Your Numbers, Protect Your Income
Tax ignorance is expensive.
Once you understand:
- What chargeable income means
- Which deductions apply to you
- How progressive tax bands work
you can verify your payslip, challenge wrong deductions, and plan better.
If your employer calculates PAYE on your gross salary, that is a red flag worth questioning.
Bottom line:
You don’t fight tax with emotions.
You fight it with correct calculations.
