Running payroll in Kenya means navigating four distinct statutory deductions, each with its own rates, filing portals and deadlines. Employers must withhold Pay As You Earn income tax, National Social Security Fund contributions, Social Health Insurance Fund payments and the Affordable Housing Levy every month. A single missed remittance or miscalculated band can trigger Kenya Revenue Authority penalties, employee disputes and audit flags that ripple through your finance team for months. Understanding how these deductions interact and staying ahead of submission dates is not optional for any business with employees on the books. This guide walks through each obligation, shows you how the numbers work and explains what happens when compliance slips.
Understanding Kenya's Four Mandatory Payroll Deductions
Pay As You Earn is the income tax withheld at source on employee salaries, calculated using progressive tax bands that rise with earnings. The National Social Security Fund operates a dual-tier contribution model introduced in 2023, requiring both employee and employer to contribute six percent on pensionable pay up to thirty-six thousand shillings per month. The Social Health Insurance Fund replaced the old National Hospital Insurance Fund in 2024, shifting from fixed brackets to a flat 2.75 percent of gross salary. The Affordable Housing Levy, launched in 2023, deducts 1.5 percent from the employee and another 1.5 percent from the employer, aimed at funding affordable-housing projects across the country. Missing any of these four deductions exposes your company to automatic penalties from KRA, backdated interest charges and frustrated employees who discover gaps when they file their own tax returns or need medical cover.
PAYE Tax Calculation: Rates, Reliefs and Worked Examples
Kenya's PAYE bands for 2025 start at ten percent on monthly income up to twenty-four thousand shillings, then step to twenty-five percent for the slice between twenty-four thousand and thirty-two thousand three hundred and thirty-three. The thirty-percent band covers earnings from thirty-two thousand three hundred and thirty-four up to five hundred thousand, followed by 32.5 percent on the portion between five hundred thousand and one and eight hundred thousand, and thirty-five percent on anything above eight hundred thousand. Every employee receives a personal relief of two thousand four hundred shillings per month, which is subtracted from the gross tax due to arrive at the net PAYE payable. Calculating taxable pay starts with gross salary, then subtracts allowable pension contributions and NSSF deductions before applying the bands to what remains.
Take a monthly gross salary of one hundred thousand shillings as an example. Deduct NSSF Tier I of four hundred and twenty shillings and Tier II of one thousand seven hundred and forty shillings, leaving taxable income of ninety-seven thousand eight hundred and forty shillings. Apply ten percent to the first twenty-four thousand, twenty-five percent to the slice from twenty-four thousand to thirty-two thousand three hundred and thirty-three, and thirty percent to the remainder up to ninety-seven thousand eight hundred and forty. Sum the tax from each band, subtract the two thousand four hundred shilling personal relief, and you arrive at the net PAYE figure that flows to KRA. The most common error is applying the bands to gross salary instead of taxable income, which overstates the tax due and sends incorrect amounts to the revenue authority.
NSSF Contributions: Tier I, Tier II and Employer Matching
Tier I covers pensionable pay up to seven thousand shillings, with both employee and employer contributing six percent, capping at four hundred and twenty shillings each. Tier II applies to the slice of pensionable pay between seven thousand and one shilling and thirty-six thousand shillings, again at six percent from each party, reaching a maximum of one thousand seven hundred and forty shillings per side. When pensionable pay hits or exceeds thirty-six thousand, the total monthly NSSF deduction is two thousand one hundred and sixty shillings from the employee and two thousand one hundred and sixty from the employer. If an employee earns five thousand shillings, only Tier I applies; if they earn thirty thousand, both tiers kick in but the Tier II calculation runs only on the twenty-three thousand shilling slice above seven thousand. Employers must file and remit NSSF through the online portal by the fifteenth of the following month, uploading member lists and payment confirmations to avoid late-filing surcharges.
Social Health Insurance Fund (SHIF): What Changed From NHIF
SHIF introduced a single 2.75 percent deduction on gross salary, replacing the old NHIF bracket system that charged fixed amounts based on income ranges. Under SHIF, a fifty-thousand-shilling salary triggers one thousand three hundred and seventy-five shillings, while a two-hundred-thousand-shilling salary deducts five thousand five hundred, scaling proportionally without artificial cliffs. The employer does not match SHIF; it remains purely an employee contribution, unlike NSSF or the housing levy. During the transition period in 2024, payroll teams had to migrate employees from NHIF deductions to SHIF, updating employee master files and recalculating historical arrears where necessary. Remittance happens monthly through the SHA portal, which also handles registration of dependants, and deadlines mirror the NSSF timeline to keep filings aligned.
Affordable Housing Levy: Rate, Remittance and Exemptions
The housing levy deducts 1.5 percent of gross pay from every employee and requires the employer to contribute an equal 1.5 percent, bringing the total monthly levy to three percent of gross payroll. The levy applies broadly, with almost no exemptions; even casual workers and part-time staff fall under the requirement if they appear on the payroll. Employers remit the combined three percent via iTax using a dedicated payment code, filing alongside the P10 form that also covers PAYE. Late or short payments attract a five-percent penalty per month on the unpaid amount, plus interest at two percent, compounding quickly if the gap drags across quarters. Because the levy is calculated on gross pay before any other deductions, it does not reduce taxable income for PAYE purposes, and NSSF tiers ignore the housing levy when determining pensionable pay.
Avoiding Penalties: Filing Deadlines, iTax Integration and Record-Keeping
KRA requires the P10 form, which consolidates PAYE and housing levy totals, to be filed and paid by the ninth of the month following payroll. NSSF and SHIF each operate separate portals with their own monthly deadlines, typically the fifteenth for NSSF and a similar window for SHIF, meaning payroll teams juggle three filing systems every cycle. Keeping digital payslips, iTax payment receipts, NSSF contribution statements and SHIF remittance confirmations in a central repository ensures you can answer auditor questions without scrambling through email threads. Common audit triggers include P9 forms that do not reconcile with monthly P10 totals, late filings that appear in KRA logs, and incorrect application of tax bands that over or under-report taxable income. Our AI HR software flags errors before submission, auto-fills statutory rates, stores compliance proof in the cloud and sends deadline reminders so nothing slips through the cracks.
Payroll compliance in Kenya demands precision across four moving parts, each with distinct rates and portals. Miscalculating PAYE bands, forgetting a tier of NSSF, misapplying the SHIF rate or missing the housing levy remittance can each trigger penalties that far exceed the cost of getting it right the first time. Automated systems remove manual lookups, apply the latest statutory changes and generate audit-ready reports that keep KRA, NSSF and SHIF satisfied every month. When payroll compliance Kenya becomes routine rather than reactive, your finance team spends less time firefighting and more time supporting business growth.