If your current lender is not giving you the market rate and is charging a comparatively high interest rate, you can explore the option of changing the lender if you have maintained a good track record of the repayment. Tax calculations can change the view on pre-payment. You can also use a calculator to check whether it makes sense to change the lender at (http://www.apna-loan.com/loan-advice-india/transfer-existing-loan-calcul…). You may want to consider the prepayment charges payable to the existing lender and the processing fee to the new lender.