Variable pay PAYE Nigeria: How to Calculate (2026 Guide)

Your sales rep earned ₦200,000 base salary plus ₦150,000 commission this month. Your security guard worked 20 hours of overtime. Your accountant gets a performance bonus in December.

Here’s the problem: Most businesses calculate PAYE tax the same way for everyone — multiply monthly income by 12, find the tax bracket, divide by 12. For variable pay in Nigeria, this creates massive over-deductions early in the year and under-deductions later.

What You’ll Need

Requirements:

• Employee’s year-to-date (YTD) gross income
• YTD PAYE already deducted
• Current month’s total earnings (base + variable)
• NTA 2025 tax bands [SOURCE: Nigeria Tax Act 2025]

Estimated time: 15-20 minutes per employee with variable pay
Tools required: Calculator or payroll software with cumulative PAYE functionality

The Cumulative Basis Method for Variable Pay PAYE Nigeria

Variable pay PAYE in Nigeria uses the cumulative basis method under NTA 2025 [SOURCE: Nigeria Tax Act 2025]. Here’s how it works:

1. Project annual income from current year-to-date earnings

2. Calculate total annual PAYE using NTA 2025 tax bands

3. Subtract PAYE already paid this year

4. The remainder is this month’s PAYE deduction

This method prevents the wild swings you get with monthly calculations. When someone earns ₦100,000 in January and ₦400,000 in February, their tax burden smooths out over the year instead of creating massive February deductions.

Step 1: Calculate Year-to-Date Totals

Start with what the employee has earned so far this year.

Example: It’s April 2026. Your sales manager has earned:

• January: ₦300,000 (base ₦200,000 + commission ₦100,000)
• February: ₦250,000 (base ₦200,000 + commission ₦50,000)
• March: ₦350,000 (base ₦200,000 + commission ₦150,000)
• April: ₦280,000 (base ₦200,000 + commission ₦80,000)

YTD gross income: ₦1,180,000
YTD PAYE paid: ₦89,400 (from previous months)

Step 2: Project Annual Income

Take the YTD income and project it forward to estimate total annual earnings.

Formula: (YTD Income ÷ Months elapsed) × 12

Calculation: (₦1,180,000 ÷ 4) × 12 = ₦3,540,000 projected annual income

Pro tip: For highly seasonal businesses (like retail during December), use judgment. Don’t blindly extrapolate December earnings across 12 months.

Step 3: Apply NTA 2025 Tax Bands

Calculate annual PAYE on the projected income using the graduated tax bands. For detailed information on current tax bands and rates, refer to the official FIRS tax guidelines:

Income Band	Rate	Tax on Band
First ₦800,000	0%	₦0
Next ₦2,200,000 (₦800,001 – ₦3,000,000)	15%	₦330,000
Next ₦540,000 (₦3,000,001 – ₦3,540,000)	18%	₦97,200

Total projected annual PAYE: ₦427,200

Step 4: Calculate This Month’s PAYE

Subtract what’s already been paid to find this month’s deduction.

Annual PAYE: ₦427,200
YTD PAYE paid: ₦89,400
April PAYE: ₦427,200 – ₦89,400 = ₦337,800 ÷ 9 remaining months = ₦37,533

Wait — that’s not right. The cumulative method doesn’t divide remaining tax by remaining months. It calculates what should have been paid YTD and adjusts immediately.

Correct calculation:
YTD PAYE that should have been paid: (₦427,200 ÷ 12) × 4 months = ₦142,400
YTD PAYE actually paid: ₦89,400
April catch-up PAYE: ₦142,400 – ₦89,400 = ₦53,000

Why Monthly Calculations Fail for Variable Pay

Let’s compare the old monthly method versus cumulative for our sales manager:

January (₦300,000 monthly):

• Monthly method: Projects ₦3,600,000 annual → ₦45,833 PAYE
• Cumulative method: Projects ₦3,600,000 annual → ₦45,833 PAYE

February (₦250,000 monthly):

• Monthly method: Projects ₦3,000,000 annual → ₦27,500 PAYE
• Cumulative method: Adjusts for over-payment → ₦9,167 PAYE

The monthly method swings wildly. The cumulative method smooths it out.

Handling Specific Variable Pay Scenarios

Commission-Based Staff

Sales reps, insurance agents, and real estate brokers often earn 70%+ of their income from commissions.

Key rule: Commission income is fully taxable under NTA 2025 [SOURCE: Nigeria Tax Act 2025]. No special treatment.

Common mistake: Some businesses try to treat commissions as “business expenses” to the employee. This is incorrect. Commission payments are employment income subject to full PAYE.

Overtime Pay Calculations

Overtime is taxable income. Include it in the cumulative PAYE calculation.

Example: Security guard earning ₦80,000 base works 30 hours overtime at time-and-a-half (₦500/hour regular rate).

Overtime calculation: 30 hours × ₦750 = ₦22,500
Total monthly income: ₦80,000 + ₦22,500 = ₦102,500

Run this through the cumulative PAYE method like any other variable income.

Year-End Bonuses and 13th Month

December bonuses create the biggest PAYE calculation errors. Here’s why:

You pay someone a ₦500,000 Christmas bonus in December. If you use the monthly method, you’re projecting ₦6,000,000 annual income just for December — creating massive over-deduction.

Correct approach: Add the bonus to their actual YTD income, calculate annual PAYE on the real total, subtract YTD PAYE paid, and deduct the remainder.

13th month salaries follow the same rule [SOURCE: Nigeria Tax Act 2025]. They’re taxable employment income, not gifts.

Weekly and Bi-Weekly Payroll

Some businesses pay weekly (especially manufacturing and retail). The cumulative method works the same way — just with more frequent calculations.

Weekly payroll example:

• Calculate YTD income including this week
• Project annual income: (YTD income ÷ weeks elapsed) × 52
• Calculate annual PAYE on projected income
• Subtract YTD PAYE paid
• This week’s PAYE = adjustment needed

Pro tip: Most payroll software struggles with weekly cumulative PAYE. You’ll need specialized systems or manual calculations.

Common Variable Pay PAYE Mistakes

1. Treating Bonuses as Separate Income

Wrong: Calculate PAYE on the bonus separately from regular salary.
Right: Add bonus to YTD income and run cumulative PAYE calculation.

2. Using Fixed Monthly PAYE for Variable Workers

Wrong: Set a salesperson’s PAYE at ₦25,000/month regardless of commission earnings.
Right: Recalculate PAYE every month using cumulative method.

3. Ignoring Negative Adjustments

Sometimes the cumulative calculation shows you’ve over-deducted PAYE. Don’t ignore this.

Example: You deducted ₦50,000 PAYE in January based on high commission. In February, commissions drop. Cumulative calculation shows YTD PAYE should be ₦35,000, but you’ve already deducted ₦50,000.

February PAYE: ₦0 (you’ve already over-paid by ₦15,000)

4. Pension and NHF on Variable Pay

Don’t forget: Pension contributions (8% employee, 10% employer) and NHF (2.5%) apply to pensionable emoluments including variable pay [SOURCE: Pension Reform Act 2014].

Pensionable emoluments include:

• Basic salary
• Housing allowance
• Transport allowance
• Commission and bonuses (often missed)

5. Wrong Annual Projection

In February, your sales rep earned ₦50,000 (bad month). Projecting this across 12 months gives ₦600,000 annual income — probably way too low.

Better approach: Use a rolling 3-month average or set minimum projection thresholds based on job role.

Worked Example: Full Year Variable Pay PAYE

Employee: Marketing manager with ₦300,000 base + variable performance bonuses
Scenario: Track cumulative PAYE across 4 months

Month 1 (January 2026):

• Gross income: ₦300,000 (base only)
• YTD gross: ₦300,000
• Projected annual: ₦3,600,000
• Annual PAYE: ₦486,000
• Should have paid YTD: ₦40,500
• Actually paid YTD: ₦0
• January PAYE: ₦40,500

Month 2 (February 2026):

• Gross income: ₦450,000 (₦300K base + ₦150K bonus)
• YTD gross: ₦750,000
• Projected annual: ₦4,500,000
• Annual PAYE: ₦756,000
• Should have paid YTD: ₦126,000
• Actually paid YTD: ₦40,500
• February PAYE: ₦85,500

Month 3 (March 2026):

• Gross income: ₦320,000 (₦300K base + ₦20K bonus)
• YTD gross: ₦1,070,000
• Projected annual: ₦4,280,000
• Annual PAYE: ₦716,400
• Should have paid YTD: ₦179,100
• Actually paid YTD: ₦126,000
• March PAYE: ₦53,100

Month 4 (April 2026):

• Gross income: ₦380,000 (₦300K base + ₦80K bonus)
• YTD gross: ₦1,450,000
• Projected annual: ₦4,350,000
• Annual PAYE: ₦744,000
• Should have paid YTD: ₦248,000
• Actually paid YTD: ₦179,100
• April PAYE: ₦68,900

Notice how the PAYE adjusts each month based on actual earnings, not wild month-to-month swings.

Rent Relief Impact on Variable Pay

The new rent relief under NTA 2025 adds another layer [SOURCE: Nigeria Tax Act 2025]. Employees can claim 20% of annual rent paid, up to ₦500,000 per year.

For variable pay workers: The rent relief reduces their annual chargeable income, which flows through to lower PAYE. But you need their rent documentation upfront to factor this into cumulative calculations.

Net salary implications: If you operate “net-first” salaries (employee receives fixed take-home), rent relief reduces your gross salary costs. The required gross income drops when PAYE drops.

Technology Solutions

Manual cumulative PAYE calculations are error-prone and time-consuming. Here are your options:

Excel/Google Sheets

Pros: Free, customizable
Cons: Manual data entry, high error risk, no automation

Dedicated Payroll Software

Pros: Automated calculations, compliance updates
Cons: Monthly subscription costs, learning curve

Lint Payroll

Handles cumulative PAYE computation automatically, even for variable pay. ₦500 per employee per payroll run covers PAYE computation, pension calculations, NHF, payslip generation, and remittance tracking.

Start automating your variable pay PAYE calculations

Compliance and Penalties

Get variable pay PAYE wrong, and you’re looking at penalties under NTA 2025 [SOURCE: Nigeria Tax Act 2025]:

Late PAYE remittance: 10% penalty on unpaid amount plus interest
Incorrect deductions: Additional assessments plus penalties
Poor record keeping: Administrative penalties

PAYE remittance deadline: 10th of the following month to your state tax authority.

For more detailed information on payroll compliance requirements, check out our complete guide on Nigerian payroll compliance best practices.

FAQs

Q: Do I need to recalculate PAYE every month for variable pay employees?

A: Yes. The cumulative method requires monthly recalculation based on updated YTD figures. It’s the only way to ensure accurate deductions.

Q: What if an employee’s variable pay drops to zero for several months?

A: Continue using the cumulative method. Project annual income based on YTD performance. If projections show over-payment of PAYE, reduce future deductions accordingly.

Q: How do I handle employees who join mid-year with variable pay?

A: Start cumulative calculations from their join date. Project annual income based on months remaining, not a full 12-month year.

Q: Can I use average monthly income instead of true cumulative calculations?

A: No. NTA 2025 requires proper cumulative basis for variable pay [SOURCE: Nigeria Tax Act 2025]. Averaging methods don’t comply with tax law.

Q: What happens if I over-deduct PAYE using the wrong method?

A: You must refund excess deductions to the employee or carry forward as credits. The tax authority won’t accept “administrative error” as justification for employee losses.

Q: Do allowances count as variable pay?

A: Depends on the allowance type. Transport and housing allowances that vary month-to-month should use cumulative PAYE. Fixed allowances can use standard monthly calculation.

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This guide reflects NTA 2025 requirements effective January 1, 2026 [SOURCE: Nigeria Tax Act 2025]. For complex situations involving stock options, expatriate staff, or multi-state operations, consult a qualified tax professional.

Author: Lint Finance Team | Last updated: April 6, 2026 | Reviewed by: [Tax compliance specialist]