Depends on the LEVERAGE the firm employs in its business (both Long-term & Short-term)...
KenolKobil (like most OMCs) borrow short-term money (now at 24% or higher even for AAA firms) thus those costs will be passed on in some form or fashion. For KK, it means only import that which sells ASAP if under price controls i.e. do not import fuel for sales to the Wholesale Market.
Many banks will only lend to AAA customers at Overnight Rates [The bank can lend in the Overnight Market at 33% so why lend at less than that to a Customer?]
ARM will be affected as it is highly leveraged. Thanks to competition it might not raise its prices but if one competitor raises prices so do others.
Retail Segment e.g. Uchumi, etc... all will raise prices as their suppliers raise prices.
Simple calculation:
KES 50mn gets you 20% (even 25%) for short-term deposits. As a business, if you have cash... put it in T-Bills or Deposits. Why take the risk of fluctuating forex, high interest rates, etc to make 25% margin... when you can sit back & relax?
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett