Commonwealth Bank is offering a discount of 0.2% per annum on new loans taken out after 21 March this year. The deal applies to all new three-, four- and five-year fixed rate home loans or investment home loans and is available for a year. The offer is available for new business or customers topping up or internally refinancing, where the new loan amount is at least equal to the existing loan balance. It is also available for low-doc customers. To secure the reduced interest rate for the term of the loan, customers must pay the rate lock fee of $395 per rate lock. Those who do not pay the rate lock fee still receive the total 0.2% per annum interest rate discount, but funding may change depending on fixed rate movements. Customers switching or with interest in advanced loans are not eligible for the discount. It cannot be taken in conjunction with the three-year discount offer ending 30 March.