Under the old NHIF, an employee on KES 300,000 a month and one on KES 100,000 paid exactly the same health deduction: KES 1,700. That ceiling is gone. SHIF applies a flat percentage to gross pay with no upper limit, so the health line on your payroll now scales with every raise, bonus and taxable allowance you award.
This guide covers what a Kenyan employer needs to get right about SHIF deductions: the rate and its base, the floor for low earners, the remittance deadline, what late payment costs under the Social Health Insurance Act, how SHIF interacts with PAYE, and the calculation error that quietly builds arrears on most SME payrolls.
Key takeaways
- SHIF is 2.75% of an employee's gross monthly salary, with a minimum of KES 300 a month and no upper cap.
- It is an employee deduction. The employer withholds it and remits it, but does not match it the way it matches NSSF.
- Contributions are due by the 9th of the month following the payroll month. Late remittance attracts a penalty of 2% of the outstanding amount for every month it stays unpaid.
- Since December 2024, SHIF is deducted from taxable pay before PAYE is computed, so getting the SHIF figure wrong also gets the PAYE figure wrong.
How SHIF is calculated in Kenya: 2.75% of gross pay
The Social Health Insurance Fund replaced NHIF for salaried employees from 1 October 2024, with the first contributions falling due on 9 November 2024. The rate for anyone in salaried employment is 2.75% of gross monthly salary, a figure confirmed by EY's tax alert on the transition and by PwC's Kenya tax summary.
The word carrying the weight there is gross: the base is full gross monthly pay, not basic salary and not net pay. If you pay someone a basic salary of KES 60,000 plus a taxable house allowance of KES 20,000 and a taxable transport allowance of KES 10,000, the SHIF base is KES 90,000 and the deduction is KES 2,475 — not the KES 1,650 you would get from basic alone.
SHIF minimum contribution and why there is no maximum
There is a floor and no ceiling. The minimum monthly contribution is KES 300, which matters for part-time staff and anyone on a low wage: at 2.75%, the percentage only reaches KES 300 at a gross of roughly KES 10,910 a month. Below that, the floor applies instead.
At the top end nothing intervenes. Vialto Partners' alert on the fund states plainly that there is no maximum contribution, and the removal of the old banded ceiling is the change that hits senior salaries hardest. An employee on a gross of KES 150,000 now contributes KES 4,125 a month. Under NHIF's graduated scale, which topped out at KES 1,700 for everyone earning KES 100,000 and above, that same employee paid KES 1,700. The gap is KES 2,425 a month, or KES 29,100 over a year, on one payslip.
Who pays SHIF: an employee deduction with employer liability
This is where Kenyan employers most often confuse SHIF with NSSF. NSSF is matched — the employer contributes alongside the employee. SHIF is not. The 2.75% comes out of the employee's pay, and the employer's role is to withhold it and remit it to the Social Health Authority.
That distinction affects your cost model but not your risk. The duty to register employees and remit on time sits with the employer, and so does the liability when it is missed. The employee has already paid; if the money never reaches SHA, the business is in breach and the employee is the one who reaches a hospital and finds their cover inactive.
SHIF remittance deadline: the 9th, and what the 2% penalty costs
Contributions for a payroll month are due by the 9th day of the following month: September's deductions are due by 9 October. The timing is unchanged from the NHIF era — what changed is the amount and the body receiving it.
Miss it and Section 27(6) of the Social Health Insurance Act, 2023 applies a penalty of 2% of the amount due for every month the contribution remains unpaid. SHA restated this publicly in July 2026 in a warning to employers. Take a business with twenty staff on an average gross of KES 40,000: monthly SHIF is KES 22,000, and each month that sum sits unremitted adds KES 440 in penalty. Leave it for six months and you owe the KES 132,000 in contributions plus penalties accruing on each unpaid month — money that buys the business nothing.
Beyond the percentage penalty, failing to register employees and remit is an offence. ALN's analysis of the Court of Appeal ruling that cleared the fund for rollout notes a fine of up to KES 2 million, imprisonment of up to three years, or both — a range the Kenya Times reported SHA repeating in its own warnings.
Does SHIF reduce PAYE? Yes, since December 2024
It does, and it is one of the few pieces of good news in the transition. In a public notice on the Tax Laws (Amendment) Act, 2024, KRA confirmed that from 27 December 2024 SHIF contributions are an allowable deduction in computing taxable employment income, alongside the affordable housing levy. Business Daily described the change as ending a situation where workers were taxed on income they had already surrendered as a statutory deduction.
The practical consequence is a dependency: SHIF is subtracted from taxable pay before PAYE is calculated, so an error in the SHIF figure propagates straight into the PAYE figure. A payroll that under-deducts SHIF over-deducts PAYE, and a correction six months later means restating both.
The mistake most businesses make: running SHIF on basic salary
The single most common SHIF error on Kenyan SME payrolls is applying 2.75% to basic salary rather than gross pay. It happens because allowance lines were added to the payroll sheet at a different time from the statutory lines, and the formula was never widened.
The cost compounds in three directions at once. Take a ten-person team where each employee receives KES 25,000 in taxable allowances on top of basic pay. The under-deduction is 2.75% of KES 250,000, or KES 6,875 a month — KES 82,500 over a year. First, that is an arrears balance the business will eventually be asked to settle. Second, the 2% monthly penalty applies to it for the whole period it went unpaid. Third, because SHIF reduces taxable pay, every one of those employees was over-deducted PAYE for twelve months, so the correction is not one adjustment but two, across ten payslips and twelve periods.
Almost as common is the ceiling that no longer exists: NHIF-era templates still capping the health deduction at KES 1,700. On a team of senior staff, that error runs into hundreds of thousands of shillings a year.
Registering employees and dependants with SHA
Deducting correctly is not the whole obligation. Employers must register their employees, and dependants need registering too, for cover to function. A deduction that reaches SHA against an unregistered or misidentified employee produces the worst outcome available: the business has paid and the employee still cannot claim.
Enforcement on this is not theoretical. When SHA launched its Rapid Results Employer Compliance Initiative in June 2025, the Ministry of Health reported that more than 12,900 employers in Nairobi alone had been flagged for non-compliance, with outstanding remittances exceeding KES 3 billion. Capital FM's report quoted Medical Services Principal Secretary Dr Ouma Oluga noting that public sector institutions had largely complied while many private employers had not, with the exercise set to extend to Kiambu, Kajiado and then nationwide.
Frequently asked questions
Is SHIF calculated on gross or net salary?
Gross. The 2.75% applies to gross monthly pay, including taxable allowances, before any other deduction is taken. Calculating it on basic salary or on net pay both produce an under-deduction and an arrears balance. A system like Force HRM applies the rate to the correct gross automatically, so the base does not drift when you add an allowance.
Does the employer contribute to SHIF as well?
No. Unlike NSSF, where the employer matches the employee's contribution, SHIF is an employee-only deduction. The employer's duty is to withhold it, register the employee, and remit the money to SHA by the 9th of the following month.
What happens if we deducted SHIF but did not remit it?
The contribution remains owed and attracts a penalty of 2% of the outstanding amount for every month it stays unpaid, under Section 27(6) of the Social Health Insurance Act, 2023. Persistent failure to register and remit is an offence carrying a fine of up to KES 2 million, imprisonment of up to three years, or both. The cheapest course is to remit the arrears and stop the penalty clock.
Getting SHIF right every month without checking a spreadsheet
Almost every SHIF problem above is a formula problem rather than a knowledge problem: a base never widened to include allowances, a ceiling never removed, a deadline that slipped while someone was travelling. Force HRM computes PAYE, SHIF, NSSF and the Housing Levy from the correct gross on every run, flags what is due before the 9th, and is built mobile-first for the way Kenyan managers actually work — and because it connects over MCP, you can ask an AI assistant to pull the month's statutory breakdown in a sentence.
If your health deductions have been running off basic pay, the fix is a single payroll cycle away: see how Force HRM calculates SHIF and your other statutory deductions.
