بسم الله الرحمن الرحيم
It is allowed to pay the interest money with interest provided both are government banks or private but the owners are same. It is not lawful to pay interest money in exchange to basic loan. It should be noted that it is haram to take interest based loan without a severe need which is not allowed as per the Shariah.
Note: Fixed deposit is also haram.
Allah knows Best!
Darul Uloom Deoband