Fringe Benefit Tax Kenya: Employer Guide

Fringe benefit tax in Kenya is an employer-paid tax on loans provided to employees, directors or their relatives at below-market interest rates. It is not a blanket tax on every workplace benefit. For October, November and December 2026, KRA prescribed a 9% market-interest benchmark, while its worked calculation applies 30% tax to the interest benefit, not to the loan principal.

FBT Versus PAYE on Benefits

Section 12B of the Income Tax Act is titled “Imposition of fringe benefit Tax”. For HR, the practical distinction is between the cost of offering a cheap loan and the payroll treatment of other benefits.

Do not place cars, housing, school fees and medical cover into a single FBT category. Review each benefit separately under the applicable PAYE guidance, including whether it is taxable and how it should be valued. A payroll label such as “low-interest benefit” is not enough to establish the correct treatment.

Which Rate Should You Use?

KRA prescribes the market-interest rate quarterly. Use the notice applicable to the month being calculated, including when correcting an earlier period. Do not apply the newest benchmark retrospectively simply because it appears in your payroll settings.

Keep these inputs separate:

• Market benchmark: KRA’s prescribed rate for the relevant quarter.
• Borrower interest: the interest actually paid, supported by the loan records.
• FBT tax rate: the percentage applied to the benefit value. KRA’s worked example uses 30%.

Assign responsibility for checking each quarterly notice and recording its effective months. Save the notice with the calculation rather than relying on an undated spreadsheet rate.

How to Calculate Fringe Benefit Tax

KRA defines the benefit as the difference between interest that would have been payable at its prescribed market rate and interest actually paid by the borrower.

For a straightforward full-month calculation with an unchanged loan balance:

Monthly market interest = outstanding principal × annual KRA benchmark ÷ months in a year

Monthly benefit = monthly market interest minus interest actually paid

Monthly FBT = monthly benefit × applicable FBT tax rate

KRA’s Worked Example

KRA illustrates a KSh 3,000,000 loan charging 3% interest when the market benchmark is 9%.

The benchmark measures the interest advantage. The tax is then applied to that advantage. Applying 9% directly as the tax rate would confuse the measurement of the benefit with the tax calculation.

Interest-Free and Partly Subsidised Loans

For an interest-free loan, there is no borrower interest to subtract from the market-interest amount. Where the borrower pays some interest, subtract the interest actually paid, not merely the amount stated in the agreement.

Keep interest charged and interest paid in separate records. A contractual rate alone does not demonstrate that payment occurred.

Changing Balances and Renegotiated Terms

For mid-month advances, repayments or rate changes, retain dated transactions and the applicable agreement. Do not apply the simple unchanged-balance example blindly to a changing loan.

The cited KRA example does not establish a detailed daily-proration method. Have the tax preparer confirm the treatment of partial periods and document the calculation basis rather than presenting an internal convention as a KRA rule.

Monthly Filing and Payroll Workflow

FBT is computed monthly and is due on or before the 9th day of the following month. KRA’s PAYE brochure states that FBT is paid by employers with a PAYE obligation and that PAYE returns and payments are made through iTax by that deadline.

Use iTax for the employer’s PAYE return and payment process, and confirm how the FBT amount should be reported before submission. Keep submission evidence and payment references with the monthly calculation.

A useful monthly close sequence is:

• Reconcile opening principal, advances, repayments and closing principal to the loan ledger.
• Confirm borrower status and any relationship to an employee or director.
• Record the benchmark applicable to that month.
• Reconcile interest charged against interest actually paid.
• Calculate the benefit and employer FBT, then obtain review approval.
• Complete filing and payment, and reconcile the references to the ledger.

Keep FBT identifiable in your payroll process as an employer tax rather than an employee deduction. Use employee management records to connect loan agreements, changes and exit arrangements to the borrower.

For salary take-home planning, use the salary calculator separately from the staff-loan FBT calculation:

Keep a Staff-Loan Tax Register

Your working register should make each calculation reproducible. Include:

• Borrower name, employment status and relevant relationship.
• Signed agreement and any revised terms.
• Principal movements with transaction dates.
• Contracted interest rate, interest charged and interest paid.
• Applicable KRA quarterly benchmark and supporting notice.
• Benefit value, FBT amount and reviewer approval.
• Filing evidence, payment reference and ledger reconciliation.

At employee exit, check the loan separately from final salary processing. KRA states that where the loan term extends beyond termination, FBT continues while the loan remains unpaid. Removing someone from active payroll must not remove an outstanding loan from the tax review.

Do Not Confuse FBT With Deemed Interest

The same October-December 2026 notice also prescribes 9% for deemed interest under section 16(2)(ja). That is a different provision from staff-loan FBT under section 12B.

For deemed interest, the notice states that 15% withholding tax must be deducted and remitted within five working days. Do not transfer that withholding rate or deadline into the staff-loan calculation. If your business has a deemed-interest issue, assess it separately rather than combining it with the employee loan register.

Penalties and Late Payment

KRA’s PAYE penalties guidance lists:

These are KRA’s published PAYE-related penalties, not a separately stated universal FBT penalty schedule. For an FBT omission, confirm the applicable assessment and correction treatment with KRA or your tax adviser. Distinguish an unfiled return from an unpaid liability when investigating the error.

Sources

Kenya Revenue Authority - Understanding Fringe Benefit Tax - Loan-tax scope, benefit calculation, worked example, monthly deadline and treatment after employment ends.

Kenya Revenue Authority - Fringe Benefit Tax and Deemed Interest Rate - October-December 2026 benchmarks and separate deemed-interest withholding rule.

Kenya Revenue Authority - PAYE Brochure 2026 - Employer PAYE obligation, iTax filing and payment timing.

Kenya Revenue Authority - PAYE - PAYE treatment of cars, housing and other taxable non-cash benefits.

Kenya Revenue Authority - PAYE Penalties FAQ - Published PAYE-related filing, payment and accounting penalties.

Kenya Law - Income Tax Act - Primary legislation containing section 12B, “Imposition of fringe benefit Tax”.