Commonwealth Bank announced yesterday it would increase its standard variable investor home loan interest rates by seven basis points, to 5.56 per cent per annum, and would increase its Viridian Line of Credit interest rates by 15 basis points, to 5.78 per cent per annum. Matt Comyn, group executive for retail banking services, said higher costs associated with funding mortgages, increased capital costs associated with providing home loans, and the need to restrain growth below the regulatory ten per cent investor home loan growth cap had all played a role in the decision.CBA is also introducing new interest-only products, for customers using this repayment option. The bank said its standard variable rate for owner occupiers remains at 5.22 per cent annually, the lowest among the major banks. Business rates also remain unchanged. The new rates are effective from 16 December 2016.