Top-up loan on a home loan can be used for any purpose — to repair or furnish your home, to meet personal needs such as a child's education or marriage, or to meet business expenditures
The interest rate on a top-up loan is likely to be lower than on a personal loan and gold loan
The processing time is also likely to be faster as the bank has already done its due diligence on you once, though it is not likely to be as fast as for a gold loan
Interest rate on a top-up loan will be slightly higher than on a home loan from the same bank or housing finance company
However, remember that the existing loan plus the top-up loan cannot exceed the loan-to-value ratio of the home loan
You can only avail of a top-up loan if your repayment record is good