Excise duty structures vary depending on the product type, using either physical measurements or monetary values to compute the tax liability.
                             +-----------------------+

                             |  Excise Duty Rates    |
                             +-----------+-----------+
                                         |
                +------------------------+------------------------+

                |                                                 |
     +----------v----------+                           +----------v----------+

     |     Specific Rates  |                           |   Ad Valorem Rates  |
     +----------+----------+                           +----------+----------+

                |                                                 |
     (Tax based on physical unit)                     (Tax based on monetary value)
     * Liters of pure alcohol                         * Ex-factory selling price
     * Number of cigarette sticks                     * Transaction value of services
     * Kilograms of plastic bags                      * CIF value for imported goods

Specific Excise Rates
A specific rate is a fixed monetary tax amount charged per physical unit of the good. It ignores the monetary price of the item.
  • Examples: KES 150 per liter of spirits, KES 4,000 per mille (1,000 sticks) of cigarettes, or KES 20 per kg of sugar confectionary.
  • Advantage: Highly predictable for the government and easy to administer because it only requires counting or measuring physical volumes.
Ad Valorem Excise Rates
An ad valorem rate is a percentage tax levied on the taxable value of the good or service.
  • Examples: A 15% excise duty on telephone and internet data services, or a 35% duty on luxury passenger motor vehicles.
  • Valuation Rules (Local Goods): For locally manufactured items, the value is usually the ex-factory selling price, excluding VAT and the excise duty itself.
  • Valuation Rules (Imported Goods): For imports, the value is calculated as the Customs Value (CIF) plus the applicable Customs Import Duty.