The Bank of Ghana (BoG) says the yield on its 91-day Bill has risen from 22.80 percent to 22.91 percent since August 9 when the last public sale was effected.

According to BoG, it sold 256.33 million Cedis ($132 million) of the 91-day paper out of a total 324.07 million cedis of bids tendered.

Some financial analysts argued that the rise might be attributed to cost of funds inching higher while others argued that the cost of borrowing had increased.

Increasing interest rate means it is more attractive for people to save in the current climate of a depreciating cedi.

The cedi has been under strain since the beginning of the year as mining and other corporations in the country – a large gold producer and recent oil exporter – incresaed demand for dollar denominated imported goods.

Other experts have blamed the currency weakness on trade with China, as many traders are accumulating actual paper cash in dollars due to the lack of effective transfer channels for the Yuan in Ghana.

Statistics show that the cedi has lost over a third of its value since Ghana began producing oil in November 2010, trading currently at around 1.9115 per dollar.

Renaissance Capital has even predicted depreciation of between 5 to 10 percent by the end of 2012.

The increase in Treasury Bill rate also means that the Central Bank would be able to mop up excess liquidity from the market.

However, it’s too expensive for businesses to borrow due to the decline in economic activities.

Generally, some analysts believe that the current situation would negatively affect the country’s economy.