Hi, I just got an investment loan refinanced as a fixed rate loan. After the settlement, bank put surplus (around $700) into my savings account. Bank says because it's a fixed rate loan they can not put surplus into loan. Loan balance with first lender just prior to settlement was $599,300. It was $600k when we submitted the application. So refinance loan amount (with 2nd lender) is $600,000. Surplus of $700 is being put into my savings account. What are the tax implications of this? I assume I have to apportion interest because technically the whole of $600k is not used for investment purpose. It looks like mess but what else could I have done?