If the interest rate on the loan varies periodically over the loan tenure, then it is called a floating rate home loan. Lenders have their own base rate which determines the rate of interest charged on a home loan. The base rates of banks are revised from time to time based on RBI directives as well as other factors, which leads to an increase or decrease in the EMI amount payable.
These interest rates float according to the market situation. During Inflation, most possibly it will increase and during deflation, interest rates come down.