Tax on Concessional loan

hello friends,

I have come accross a problem relating to value of perquisite in the hands of emloyees by way of interest free concessional facilities?

It is mentioned by Mr Girish Ahuja on his book on income tax matters that the value of perquisite is nil if the amount of laon is Rs 20000 or less means there is no taxability of interest portion by way of perquisite in the hand s employees?

Please let me clear the issue with reference to relevant rule.

Sanjeev Gandhi