CommBank moves: Biggest bank to pass on RBA rate cutAustralia’s largest lender will pass the Reserve Bank of Australia’s (RBA) latest rate cut onto variable rate home loan holders on 22 August. A 25-basis point cut would assumably see the lowest variable rate in CommBank's stable – its Digi Home Loan product – fall from 5.59% p.a. Both owner-occupiers and investors holding variable rate mortgages are set to benefit from today's announcement. What could a rate cut mean for your wallet? It's important to note, however, CommBank customers won't automatically realise lower repayments on the back of a rate cut.