Tax on Employee Bonuses and Allowances: Are 13th Month Salaries and Leave Allowances Taxable in Nigeria?
December payslips have a way of starting arguments. Your salary lands, and it is bigger than usual because the company added a 13th month payment or a year end bonus. Then you look at the tax line and the excitement drops. Sometimes the deduction looks like it swallowed half the bonus.
So the question is fair: is that money actually taxable, or is your employer just being aggressive with PAYE? And what about leave allowance, which a lot of people grew up believing was somehow special?
The Short Answer
In Nigeria, a 13th month salary, a performance bonus, and a leave allowance are all part of your employment income. That means they are taxable. The tax is not charged at some separate flat rate. They simply join everything else you earned during the year, and PAYE is worked out on the total.
What confuses people is the relief side. Nigeria does give employees reliefs that reduce the amount of income that gets taxed. Those reliefs have changed over the years, and they changed again with the Nigeria Tax Act 2025. But a relief is not the same thing as an exemption. The allowance is still income. The relief just softens the tax on your total income.
Why the Tax Office Treats a Bonus as Salary
A bonus is not a gift. You received it because you are an employee, because the company performed well, or because your contract says you are entitled to it. Under Nigerian tax rules, anything you receive from an employer in connection with your employment is employment income.
The name on the payslip does not matter much. A company might call it a festive bonus, a profit share, a performance award, or a 13th month salary. Some employers split it and pay it quarterly. None of that changes the tax treatment. If it is paid to you because you work there, it forms part of your income for the year.
This is also why paying a bonus in cash outside payroll does not make it invisible. The obligation to declare income sits with the employee, and unpaid tax can surface later as an assessment when you apply for a tax clearance certificate or when you file your annual return.
What Counts as Employment Income
The list is longer than most people expect. Employment income generally includes:
- Basic salary and wages
- Overtime and shift payments
- Bonuses, commissions, and profit sharing
- 13th month salary or any annual additional payment
- Housing allowance, even when it is paid separately from basic salary
- Transport, utility, entertainment, and meal allowances paid in cash
- Leave allowance
- Benefits in kind, such as a company car or subsidised accommodation
- Employer pension contributions above the statutory minimum
On the other side, some payments are not treated as taxable income. A genuine reimbursement of money you spent on company business, backed by receipts, is not income. Neither is a medical bill your employer pays directly to the hospital on your behalf, in most arrangements. Statutory pension contributions, NHF, and NHIS deductions also reduce your taxable income rather than adding to it.
Leave Allowance: Where the Confusion Comes From
Leave allowance attracts more arguments than any other line on a Nigerian payslip. A lot of that confusion is historical.
The old rule people still remember
Under the old Personal Income Tax Act, there used to be a specific relief for leave allowance. Employees could claim it as a deduction before tax was computed. Then the Consolidated Relief Allowance was introduced, and it absorbed that relief along with several others into one general relief. From that point, leave allowance stopped being a special deduction. It became ordinary taxable income, while the Consolidated Relief Allowance did the job of reducing the tax base.
What the Nigeria Tax Act 2025 changes
The Nigeria Tax Act 2025, signed in June 2025 and effective from January 2026, reshapes the relief system again. The Consolidated Relief Allowance is replaced with a rent relief, the threshold below which no tax applies is raised, and the rate bands are adjusted. Some of these changes favour low and middle income earners.
How each specific allowance is treated in practice under the new law is still settling, and the FIRS continues to issue guidance. If you see a confident post online claiming that leave allowance is now completely tax free, check the source before you celebrate. The safer position is that leave allowance remains part of your income, and the relief structure is what determines how much tax you actually pay.
How PAYE Is Deducted When the Bonus Is Paid
PAYE is deducted at source. Your employer is required to deduct the tax before the money reaches your account and remit it to the relevant tax authority. If your bonus is paid in December, the tax on it is usually deducted in that same month.
Here is the part that catches people off guard. PAYE is cumulative. Your tax is not calculated fresh each month on that month's pay alone. It is based on your total income for the year so far. When a large bonus lands in a single month, it can push a chunk of your annual income into a higher rate band, and the deduction for that month looks dramatic.
This is normal, though it is always worth confirming that your employer applied the correct figures. Employers who pay bonuses without deducting PAYE are creating a problem that can eventually land on the employee, since the ultimate liability for the tax rests with the taxpayer.
A Simple Example
Say you earn N400,000 a month, so your annual salary is N4.8 million. In December, your employer adds a 13th month salary of N400,000. Your total income for the year becomes N5.2 million.
That extra N400,000 is not taxed separately at a flat rate. It joins the total, and tax is computed on N5.2 million. Depending on the tax bands in force for that year, the top slice of your income may fall into your highest applicable rate, which has historically been 24% for higher earners under the old bands. Under the newer bands the structure is different, but the principle is the same. A N400,000 bonus rarely adds N400,000 to your bank account.
Budget on your net pay, not your gross. A bonus is taxed the same way your salary is, so what lands in your account is always less than the figure announced.
Practical Tips to Avoid Surprises
- Ask HR for a breakdown before the payment. If you know what the gross bonus is, ask what the estimated PAYE will be. A simple email now saves a shock later.
- Check your cumulative income. The tax on a December bonus depends on what you have earned all year, not just that month.
- Keep your payslips. You will need them when filing your annual return or applying for a tax clearance certificate.
- Confirm your reliefs are being applied. Statutory pension, NHF, and NHIS contributions should reduce your taxable income. If they are missing from the computation, you may be paying more than you should.
- Do not assume a cash bonus is untaxed. The liability follows the income, regardless of how it was paid.
If You Think Too Much Tax Was Deducted
Start with your employer's payroll or finance team. Ask for the PAYE computation for the month in question. Mistakes happen, especially when bonuses are processed outside the normal payroll run.
If the numbers still do not add up, you can raise it with your state internal revenue service, since PAYE for individuals is administered at state level. Reconciliation is a normal part of the process, and overpaid tax can be credited against future liabilities or refunded after review. It helps to have your payslips, employment letter, and pension statements ready.
For a broader walkthrough of how the deduction is computed each month, see this guide on how PAYE works in Nigeria.
Next step: pull out your last three payslips and compare the tax deducted in a normal month against the month your bonus was paid. If the jump looks wrong, ask payroll for the computation. That single habit has saved a lot of people money.
Final Thoughts
13th month salaries, bonuses, and leave allowances are taxable in Nigeria. They are part of your employment income, and they are subject to PAYE just like your basic salary. The reliefs available to you reduce the tax you pay, but they do not erase the income from the tax net.
The rules are shifting with the Nigeria Tax Act 2025, so treat any figure you read online, including the bands mentioned here, as something to verify against current FIRS guidance or with a tax adviser before you rely on it. What will not change is the basic principle: if your employer pays it to you because you work there, the tax office wants to know about it.