An Overview: Interbank Lending Market

Data released by the Central Bank of Iran show that the average annual interbank rates picked up in the last fiscal year (March 2021-22) but it was relatively stable.
The average interbank interest rate climbed from 17.6% in fiscal 2020-21 to 19.6% last year. It reached a peak in December at 21.1% and the lowest in August at 18.8% --  showing less volatility from the year before. 
Back in 2020-21, the average interest rate fluctuated between 9.7% and 22.6%. It dropped to 11.71% in May 2020 from 16.68% a month earlier.
It declined to 9.72% in the month to June 22.  The rates moved upward to 14.79% in the month to July 22 before rising again to 19.97% and reaching 22.63% by mid-October.