Our calculators are built using official rates and regulations from Kenya Revenue Authority (KRA), National Social Security Fund (NSSF), Social Health Insurance Fund (SHIF), and other government bodies. We implement the exact tax bands, contribution rates, and relief amounts specified in Kenyan law.
Every calculator is tested against real-world scenarios and verified by finance professionals. We update our rates within 24-48 hours of official announcements to ensure you always have access to current information. Our Methodology page documents our sources and calculation methods in detail.
While we strive for 100% accuracy, we recommend verifying critical financial decisions with your employer's payroll department or a qualified tax professional. Tax laws can be complex, and individual circumstances may vary. Check our Update Log to see when rates were last updated.