Interbank Rates Rise

The interbank rate stood near 20% for months before making a steady but subtle rise above 21% on Saturday. 
It hit 21.14% to reach the highest in the past year and a half, according to data released by the Central Bank of Iran. 
Interbank rates are interest charged on short-term lending between banks. Banks borrow money from each other to ensure that they have enough liquidity for immediate needs, or lend money when they have excess cash on hand.