Nairobi, May 4 -- The 91-day Treasury bill interest rate has risen above the eight percent level for the first time in eight months as investors continue to put pressure on the Central Bank of Kenya (CBK) to increase rates amid higher inflation.

The three-month T-bill settled at 8.03 percent last week, up from 7.77 percent, the highest it has reached since August 28, 2025. The 182-day paper also jumped above eight percent for the first time since September 22, 2025, settling at 8.21 percent from 7.88 percent previously.

The weekly auction on Thursday was carried out against the background of inflation jumping at the fastest pace in seven years to 5.6 percent in April, from 4.4 percent in March.

This sharp increase in inflation was attr...