How to Calculate SHA Deductions from Your Salary Kenya
Introduction
If you have looked at your payslip recently, you may have noticed a deduction called
SHA or SHIF contribution.
Many employees ask:
"How is SHA calculated?"
"Why is my deduction different from someone else’s?"
"Can I calculate it myself?"
The good news is that the formula is straightforward.
For salaried employees in Kenya, SHA contributions are generally calculated at 2.75%
of gross salary, subject to a minimum contribution of KSh 300 per month and
currently no upper contribution cap.
What Is SHA?
The Social Health Authority manages Kenya's health insurance framework through
the Social Health Insurance Fund (SHIF).
The contribution replaced the old NHIF salary-band structure with a
percentage-based system.
SHA Formula
Simple formula:
SHA = MAX(2.75% × Gross Salary, KSh 300)
Meaning:
- Calculate 2.75% of gross salary
- If the result is below KSh 300, use KSh 300
- No upper limit currently applies
Step 1: Determine Your Gross Salary
Gross salary means your earnings before deductions.
This commonly includes:
- Basic salary
- House allowance
- Transport allowance
- Bonuses
- Overtime
- Other taxable earnings
Gross salary is usually not your take-home pay.
Step 2: Multiply by 2.75%
Formula:
Gross Salary × 2.75%
Example:
Gross salary:
KSh 50,000
Calculation:
50,000 × 2.75%
SHA deduction:
KSh 1,375
Salary Examples
| Gross Salary | Calculation | SHA Deduction |
|---|---|---|
| KSh 8,000 | 8,000 × 2.75% = KSh 220 | KSh 300 (minimum applies) |
| KSh 20,000 | 20,000 × 2.75% | KSh 550 |
| KSh 50,000 | 50,000 × 2.75% | KSh 1,375 |
| KSh 100,000 | 100,000 × 2.75% | KSh 2,750 |
| KSh 250,000 | 250,000 × 2.75% | KSh 6,875 |
Step-by-Step Example
Suppose Sarah's payslip shows:
Basic salary → KSh 70,000
House allowance → KSh 20,000
Transport allowance → KSh 10,000
Gross salary:
KSh 100,000
SHA calculation:
100,000 × 2.75%
Monthly SHA deduction:
KSh 2,750
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Common Mistakes People Make
Using net salary instead of gross salary
Wrong:
Take-home pay × 2.75%
Correct:
Gross salary × 2.75%
Using old NHIF bands
SHA uses a percentage-based calculation rather than fixed salary ranges.
Forgetting the minimum amount
If your calculation gives less than KSh 300, the minimum contribution applies.
Frequently Asked Questions
Does SHA have a maximum contribution limit?
Current guidance indicates there is no upper cap on salaried contributions.
Who deducts SHA?
For employees, employers generally deduct and remit contributions.
Can I estimate SHA from my payslip?
Yes. Use the gross salary figure and multiply by 2.75%.
Key Takeaway
The easiest formula to remember:
SHA = Gross Salary × 2.75%
Keep in mind:
- Minimum contribution = KSh 300
- No contribution cap
- Gross salary matters, not take-home pay
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