for expats - set by the Central Bank. Rates vary from about 4.5% upwards depending on the bank and your status at the bank. The Central Bank interbank lending rate is 3.5% and the banks must make a margin. So in other words if you are a middle class borrower then 5.25% is a reasonable rate. If you are a senior manager earning 50 or 60k per month then you might negotiate 4.5 or 4.75%.