PAYE Calculator Kenya
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Bonus Tax Calculator Kenya

📅 Last updated: 13 November 2026 • 🛡️ Rates checked: 20 October 2026 (Subject to KRA confirmation) • 🏛️ Sources: KRA, NSSF, SHA

In Short: Kenya Employment Bonus Taxation (2026)

In Kenya, bonuses are not taxed at a separate flat rate. Instead, an employment bonus or 13th-month salary is added to your regular gross income in the month paid and taxed across your highest marginal PAYE tax brackets (up to 30%, 32.5%, or 35%). SHIF (2.75%) and Housing Levy (1.5%) also apply to the bonus.

Receiving an annual performance bonus or Christmas 13th-month check is an exciting milestone, but many Kenyan professionals are surprised by how much tax is deducted. Utilizing a verified PAYE calculator allows you to simulate the exact marginal tax impact on your bonus.

Bonus tax calculator

Enter your standard monthly gross salary and the bonus amount below to see a side-by-side comparison of your normal month versus your bonus month.

Bonus Tax Simulator

Net Take-Home From Bonus Alone
KES 32,875.00
Tax & Levies on Bonus: KES 17,125.00 | Effective Rate: 34.25%
Side-by-Side Comparison: Normal Month vs Bonus Month
Payroll Line Item Normal Month Month With Bonus
Gross EarningsKES 100,000.00KES 150,000.00
NSSF Contribution-KES 6,000.00-KES 6,480.00
SHIF Contribution (2.75%)-KES 2,750.00-KES 4,125.00
Affordable Housing Levy (1.5%)-KES 1,500.00-KES 2,250.00
Net PAYE TaxKES 19,308.35KES 33,828.35
Net Take-Home PayKES 70,441.65KES 103,316.65

Why a bonus month feels heavily taxed

Kenyan employees often perceive bonuses as being taxed unfairly compared to regular pay. This happens because your standard monthly salary already absorbs your personal tax relief (KES 2,400) and fills up the lower 10% and 25% tax brackets. Consequently, every shilling of your bonus is taxed at your top marginal tax bracket (typically 30% for earnings between KES 32,334 and KES 500,000). Furthermore, SHIF (2.75%) and Housing Levy (1.5%) apply directly to the bonus amount. See our PAYE tax bands guide and test standard take-home pay on our net salary calculator.

Frequently Asked Questions

What is the tax rate on a bonus in Kenya?

In Kenya, bonuses are not taxed at a separate flat rate. Instead, a bonus is added to your regular gross income in the month paid and taxed across your highest marginal PAYE tax brackets (up to 30%, 32.5%, or 35%).

Why do employees feel bonuses are taxed so heavily in Kenya?

Because personal tax relief (KES 2,400) is already consumed by your regular monthly salary, the entire bonus is subject to top-bracket marginal tax rates, giving the impression of a higher overall tax bite.

Are NSSF and SHIF charged on an employment bonus?

SHIF (2.75%) and the Affordable Housing Levy (1.5%) apply to total gross earnings including bonuses. NSSF applies at 6% only if your regular salary had not already reached the monthly ceiling of KES 108,000.

Is a 13th-month salary taxed in Kenya?

Yes. A 13th-month salary is classified as taxable employment remuneration and subject to standard PAYE calculation.

Can I legally reduce the tax paid on my bonus?

Yes. You can reduce your taxable bonus income by making an additional voluntary contribution to a registered pension fund up to the monthly allowable ceiling of KES 30,000.